jfreechart-developers — A discussion list for JFreeChart developers

Re: [jfreechart-dev] Interested in contributing

[David G. <dav...@ob...>]

Hi Amish,

Thanks for your mail.  You'd be most welcome as a contributor.  You'll have noticed that JFreeChart releases have started up again, and so having some new people contributing would be excellent.  I don't always have a lot of time, so the amount of guidance I can provide varies.  I do my best, even if that isn't always so good.

Regarding your questions:

(1)  I don't get any failures building with Maven for JFreeChart-FSE.  Can you post the first errors you are seeing?

(2)  My advice would be to choose some type of chart that interests you and see if the existing implementation has any features missing and work on those.  You could also review some of the pull requests that are pending and post some comments about them (if multiple people think a patch or pull request looks good, I'm more likely to focus on it in my limited time).  You could scan the bug list (there are a lot of open bugs) but bugs are mostly more difficult than new features so I would start with the latter if I was you.

(3)  JFreeChart is wide rather than deep, so once you understand the hierarchy of chart --> plot --> renderer, and see the separation between datasets and charts, you have the basics of what you need to know.

I can send you a copy of the JFreeChart Developer Guide, it will help you to get around the code.

Best regards,

David Gilbert
JFreeChart Project Leader

On Sep 27, 2013, at 6:38 AM, Amish Gala wrote:

> Hello all,
> 
> My name's Amish and I'm interested in contributing to JFreeChart. I am passionate about building quality into software projects, and am currently pursuing a Master of Software Engineering while working as a QA Engineer. I have a pretty good foundation of Java, OOD, and Agile practices (TDD, unit testing etc.), and am looking to gain experience with and exposure to the open source world. As part of my curriculum, I also need to try and understand the activities involved, and make a meaningful contribution. 
> 
> I have read through some of the archived mailing list messages, and have seen activity on both the SF and GitHub repositories. I downloaded the source and was able to include it in a project in Eclipse, and get all the tests running (from the SF download), however; when I imported the GitHub Maven project, I'm currently faced with literally hundreds (900+) of errors! 
> 
> So some questions:
> 
> 1) Any tips on getting the Maven project to compile? One of the main error messages is "The method X of class Y must override a superclass method". I'm on Windows running Eclipse Juno with jdk1.7.0_25
> 2) Would anybody be able to suggest some starter bugs for me to look into?
> 3) As the project is quite sizable, would you have any suggestions on which areas to look into to obtain a better understanding of the architecture? 
> 
> Thank you!
> Amish 
> 
> 
> ------------------------------------------------------------------------------
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[jfreechart-dev] Research - reg.

[Madhwaraj K. G. <mad...@ss...>]

Dear All,

*Kind attention :* David Gilbert, Thomas Morgner

As part of research activity, I am conducting a few studies on the quality
of software. For a case study, I have taken jfreechart for an evolutionary
study as it enjoys the maximum number of downloads from users all over the
world. It would be nice if I am able to access the design information i.e.
major design changes that were done to jfreechart right from the first
version till now. This, I believe would definitely help in interpreting
certain research facts.

Thanking you.

Regards,

Madhwaraj K.G.
Research Scholar
SSN College of Engineering
mad...@ss...

[jfreechart-dev] Interested in contributing

[Amish G. <ami...@gm...>]

Hello all,

My name's Amish and I'm interested in contributing to JFreeChart. I am
passionate about building quality into software projects, and am currently
pursuing a Master of Software Engineering while working as a QA Engineer. I
have a pretty good foundation of Java, OOD, and Agile practices (TDD, unit
testing etc.), and am looking to gain experience with and exposure to the
open source world. As part of my curriculum, I also need to try and
understand the activities involved, and make a meaningful contribution.

I have read through some of the archived mailing list messages, and have
seen activity on both the SF and GitHub repositories. I downloaded the
source and was able to include it in a project in Eclipse, and get all the
tests running (from the SF download), however; when I imported the GitHub
Maven project, I'm currently faced with literally hundreds (900+) of
errors!

So some questions:

1) Any tips on getting the Maven project to compile? One of the main error
messages is "The method X of class Y must override a superclass method".
I'm on Windows running Eclipse Juno with jdk1.7.0_25
2) Would anybody be able to suggest some starter bugs for me to look into?
3) As the project is quite sizable, would you have any suggestions on which
areas to look into to obtain a better understanding of the architecture?

Thank you!
Amish

[jfreechart-dev] Post on scatter chart issue

[Raghuveera R. <rra...@li...>]

Hi Devlopers,


I have an issue with scatter charts.

Below is my report :

<?xml version="1.0" encoding="UTF-8"?>
<jasperReport xmlns="http://jasperreports.sourceforge.net/jasperreports" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports http://jasperreports.sourceforge.net/xsd/jasperreport.xsd" name="Hour Of  Day" pageWidth="600" pageHeight="950" columnWidth="560" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20" uuid="b407a94f-b275-4a6d-8729-0174b9b2851b">
	<property name="ireport.zoom" value="1.0"/>
	<property name="ireport.x" value="0"/>
	<property name="ireport.y" value="136"/>
	<property name="net.sf.jasperreports.chart.domain.axis.tick.interval" value="1"/>
	<property name="net.sf.jasperreports.chart.range.axis.tick.interval" value="1"/>
	<subDataset name="Call_Direction" uuid="27267b97-3f7d-4d17-bc5d-8e6312ced4eb">
		<parameter name="NetworkNames" class="java.lang.String">
			<property name="valuessql" value="select name from manager_customer_0.networkdesc where name != &apos;Default Network&apos;"/>
			<property name="ismultiselect" value="true"/>
			<property name="useinquery" value="true"/>
			<property name="displayname" value="Network(s)"/>
			<defaultValueExpression><![CDATA["''"]]></defaultValueExpression>
		</parameter>
		<parameter name="diff_in_days" class="java.lang.Long" isForPrompting="false">
			<defaultValueExpression><![CDATA[(($P{enddate}.getTime()- $P{startdate}.getTime()) / (24 * 60 * 60 * 1000))+1]]></defaultValueExpression>
		</parameter>
		<parameter name="dateRange" class="java.lang.String">
			<property name="isdaterange" value="true|startdate|enddate"/>
			<property name="displayname" value="Date range"/>
		</parameter>
		<parameter name="startdate" class="java.util.Date">
			<property name="fromrange" value="true"/>
			<defaultValueExpression><![CDATA[new java.text.SimpleDateFormat("yyyy-MM-dd").parse($P{computed_month_first_day_str})]]></defaultValueExpression>
		</parameter>
		<parameter name="enddate" class="java.util.Date">
			<property name="fromrange" value="true"/>
			<defaultValueExpression><![CDATA[new java.text.SimpleDateFormat("yyyy-MM-dd").parse($P{computed_month_last_day_str})]]></defaultValueExpression>
		</parameter>
		<parameter name="startdate_str" class="java.lang.String" isForPrompting="false">
			<defaultValueExpression><![CDATA["'"+new java.text.SimpleDateFormat("yyyy-MM-dd").format($P{startdate})+"'"]]></defaultValueExpression>
		</parameter>
		<parameter name="enddate_str" class="java.lang.String" isForPrompting="false">
			<defaultValueExpression><![CDATA["'"+new java.text.SimpleDateFormat("yyyy-MM-dd").format($P{enddate})+"'"]]></defaultValueExpression>
		</parameter>
		<parameter name="computed_month_last_day_str" class="java.lang.String" isForPrompting="false">
			<defaultValueExpression><![CDATA[$P{currentCalendar}.getActualMaximum(Calendar.DATE)+"-"+new java.text.SimpleDateFormat("MM").format($P{currentdate})+"-"+new java.text.SimpleDateFormat("yyyy").format($P{currentdate})]]></defaultValueExpression>
		</parameter>
		<parameter name="computed_month_first_day_str" class="java.lang.String" isForPrompting="false">
			<defaultValueExpression><![CDATA["01"+"-"+new java.text.SimpleDateFormat("MM").format($P{currentdate})+"-"+new java.text.SimpleDateFormat("yyyy").format($P{currentdate})]]></defaultValueExpression>
		</parameter>
		<parameter name="currentCalendar" class="java.util.Calendar" isForPrompting="false">
			<defaultValueExpression><![CDATA[java.util.Calendar.getInstance()]]></defaultValueExpression>
		</parameter>
		<parameter name="currentdate" class="java.util.Date" isForPrompting="false">
			<defaultValueExpression><![CDATA[new java.util.Date()]]></defaultValueExpression>
		</parameter>
		<queryString>
			<![CDATA[select  cdr1.calldirection, count(*) from manager_customer_0.cdr cdr1
where cdr1.deviceid in (
select nwkmap.deviceid from manager_customer_0.networkdesc nwdesc,manager_customer_0.devicenetworkmapping nwkmap
where nwkmap.networkid = nwdesc.id
and nwdesc.name in ($P{NetworkNames})
and (schedule.startdate between date $P!{startdate_str} and date $P!{enddate_str})
and  nwdesc.name in($P{NetworkNames}))
and cdr1.aggregate <> 'old_not_for_use'
and cdr1.onbusinesstimeonly is true
and cdr1.isvalid is true
and cdr1.calldirection is not null
group by cdr1.calldirection]]>
		</queryString>
		<field name="calldirection" class="java.lang.String"/>
		<field name="count" class="java.lang.Long"/>
	</subDataset>
	<parameter name="NetworkNames" class="java.lang.String">
		<property name="valuessql" value="select name from manager_customer_0.networkdesc where name != &apos;Default Network&apos;"/>
		<property name="ismultiselect" value="true"/>
		<property name="useinquery" value="true"/>
		<property name="displayname" value="Network(s)"/>
		<defaultValueExpression><![CDATA["''"]]></defaultValueExpression>
	</parameter>
	<parameter name="diff_in_days" class="java.lang.Long" isForPrompting="false">
		<defaultValueExpression><![CDATA[(($P{enddate}.getTime()- $P{startdate}.getTime()) / (24 * 60 * 60 * 1000))+1]]></defaultValueExpression>
	</parameter>
	<parameter name="dateRange" class="java.lang.String">
		<property name="isdaterange" value="true|startdate|enddate"/>
		<property name="displayname" value="Date range"/>
	</parameter>
	<parameter name="startdate" class="java.util.Date">
		<property name="fromrange" value="true"/>
		<defaultValueExpression><![CDATA[new java.text.SimpleDateFormat("yyyy-MM-dd").parse($P{computed_month_first_day_str})]]></defaultValueExpression>
	</parameter>
	<parameter name="enddate" class="java.util.Date">
		<property name="fromrange" value="true"/>
		<defaultValueExpression><![CDATA[new java.text.SimpleDateFormat("yyyy-MM-dd").parse($P{computed_month_last_day_str})]]></defaultValueExpression>
	</parameter>
	<parameter name="startdate_str" class="java.lang.String" isForPrompting="false">
		<defaultValueExpression><![CDATA["'"+new java.text.SimpleDateFormat("yyyy-MM-dd").format($P{startdate})+"'"]]></defaultValueExpression>
	</parameter>
	<parameter name="enddate_str" class="java.lang.String" isForPrompting="false">
		<defaultValueExpression><![CDATA["'"+new java.text.SimpleDateFormat("yyyy-MM-dd").format($P{enddate})+"'"]]></defaultValueExpression>
	</parameter>
	<parameter name="computed_month_last_day_str" class="java.lang.String" isForPrompting="false">
		<defaultValueExpression><![CDATA[$P{currentCalendar}.getActualMaximum(Calendar.DATE)+"-"+new java.text.SimpleDateFormat("MM").format($P{currentdate})+"-"+new java.text.SimpleDateFormat("yyyy").format($P{currentdate})]]></defaultValueExpression>
	</parameter>
	<parameter name="computed_month_first_day_str" class="java.lang.String" isForPrompting="false">
		<defaultValueExpression><![CDATA["01"+"-"+new java.text.SimpleDateFormat("MM").format($P{currentdate})+"-"+new java.text.SimpleDateFormat("yyyy").format($P{currentdate})]]></defaultValueExpression>
	</parameter>
	<parameter name="currentCalendar" class="java.util.Calendar" isForPrompting="false">
		<defaultValueExpression><![CDATA[java.util.Calendar.getInstance()]]></defaultValueExpression>
	</parameter>
	<parameter name="currentdate" class="java.util.Date" isForPrompting="false">
		<defaultValueExpression><![CDATA[new java.util.Date()]]></defaultValueExpression>
	</parameter>
	<queryString>
		<![CDATA[--Needs to be made ready for internationalization & maybe more optimal than what we have here
select EXTRACT(HOUR FROM  cdr1.startdate) as HOUR_OF_DAY,EXTRACT(DOW FROM  cdr1.startdate)

from manager_customer_0.cdr cdr1,manager_customer_0.basicproperties bp where
cdr1.deviceid in
(select nwkmap.deviceid from manager_customer_0.networkdesc nwdesc,manager_customer_0.devicenetworkmapping nwkmap
where nwkmap.networkid = nwdesc.id
--and (cdr1.startdate between date $P!{startdate_str} and date $P!{enddate_str})
and nwdesc.name in ('Bangalore', 'BUXA'))
and bp.deviceid = cdr1.deviceid
and cdr1.isvalid is true
and cdr1.aggregate <> 'old_not_for_use'
and cdr1.onbusinesstimeonly is true
and (bp.managestatus = 'MANAGED' OR bp.managestatus = 'MANAGED_LOGIN_FAILED')

order by EXTRACT(DOW FROM  cdr1.startdate) ASC]]>
	</queryString>
	<field name="hour_of_day" class="java.lang.Double"/>
	<field name="date_part" class="java.lang.Double"/>
	<background>
		<band splitType="Stretch"/>
	</background>
	<summary>
		<band height="910" splitType="Stretch">
			<staticText>
				<reportElement uuid="ea9d905e-e67f-41b9-bcac-f37355b15935" x="170" y="0" width="238" height="20"/>
				<textElement textAlignment="Center">
					<font size="12" isBold="true"/>
				</textElement>
				<text><![CDATA[Hour-Of-Day]]></text>
			</staticText>
			<staticText>
				<reportElement uuid="3c007a2d-f438-44c1-96d5-24a103bf9336" x="29" y="283" width="17" height="95"/>
				<textElement textAlignment="Center" verticalAlignment="Middle" rotation="Left">
					<font size="12" isBold="true" isItalic="false"/>
				</textElement>
				<text><![CDATA[Hour]]></text>
			</staticText>
			<staticText>
				<reportElement uuid="6842f521-62f5-4a46-979c-655e9949023e" x="233" y="684" width="124" height="20"/>
				<textElement textAlignment="Center" verticalAlignment="Middle">
					<font size="12" isBold="true"/>
				</textElement>
				<text><![CDATA[Days]]></text>
			</staticText>
			<bubbleChart>
				<chart isShowLegend="true" customizerClass="com.lifesize.charts.StackedBarChartCustomizer">
					<reportElement uuid="80a2e475-0a40-4196-826f-d105d95e6fe0" isPrintRepeatedValues="false" x="61" y="56" width="484" height="612"/>
					<chartTitle/>
					<chartSubtitle/>
					<chartLegend position="Bottom"/>
				</chart>
				<xyzDataset>
					<xyzSeries>
						<seriesExpression><![CDATA[(($F{date_part}==1)?
    "Monday":
   ($F{date_part}==2)?
   "Tuesday":
   ($F{date_part}==3)?
   "Wednesday":
   ($F{date_part}==4)?
   "Thursday":
    ($F{date_part}==5)?
    "Friday":
    ($F{date_part}==6)?
    "Saturday":"Sunday")]]></seriesExpression>
						<xValueExpression><![CDATA[$F{date_part}]]></xValueExpression>
						<yValueExpression><![CDATA[$F{hour_of_day}]]></yValueExpression>
						<zValueExpression><![CDATA[1]]></zValueExpression>
					</xyzSeries>
				</xyzDataset>
				<bubblePlot scaleType="RangeAxis">
					<plot labelRotation="-45.0">
						<seriesColor seriesOrder="0" color="#A3C586"/>
						<seriesColor seriesOrder="1" color="#FF9900"/>
						<seriesColor seriesOrder="2" color="#CCFFFF"/>
						<seriesColor seriesOrder="3" color="#FCF1D1"/>
						<seriesColor seriesOrder="4" color="#E3675C"/>
						<seriesColor seriesOrder="5" color="#00CCCC"/>
						<seriesColor seriesOrder="6" color="#7EEE1F"/>
						<seriesColor seriesOrder="7" color="#63AA9C"/>
						<seriesColor seriesOrder="8" color="#D4E7ED"/>
						<seriesColor seriesOrder="9" color="#AB988B"/>
						<seriesColor seriesOrder="10" color="#FFF056"/>
						<seriesColor seriesOrder="11" color="#A74661"/>
						<seriesColor seriesOrder="12" color="#B1C3D4"/>
						<seriesColor seriesOrder="13" color="#2F4E6F"/>
					</plot>
					<xAxisFormat>
						<axisFormat tickLabelColor="#FFFFFF" tickLabelMask="" verticalTickLabels="false">
							<labelFont/>
						</axisFormat>
					</xAxisFormat>
				</bubblePlot>
			</bubbleChart>
			<staticText>
				<reportElement uuid="38c5bed2-6b6b-470f-a82d-a397d12e6bdf" x="46" y="770" width="480" height="20"/>
				<textElement>
					<font size="12" isBold="true"/>
				</textElement>
				<text><![CDATA[NOTE:]]></text>
			</staticText>
			<textField>
				<reportElement uuid="6cdf03cc-f80c-483a-934c-f6546dacdca9" x="46" y="790" width="480" height="94" forecolor="#000000"/>
				<textElement>
					<font size="12"/>
				</textElement>
				<textFieldExpression><![CDATA["* Business days and hours would have been configured for Network.\n" +
"* Generated on : "+$P{currentdate}.toString()]]></textFieldExpression>
			</textField>
		</band>
	</summary>
</jasperReport>






Note: 
I have hiiden x-axis label by changing font color to white.

What actually I need is I need to display string values in x-axis using(i.e day names here).

How to achieve this in scatter chart labeling ?
Also I want to know how to avoid repeating values like 00 11 22 under x-axis?

Re: [jfreechart-dev] How can I help JFreeChart

[Martin H. <ma...@xs...>]

Hi Bhushan!

[...]
> I would like to join JFreechart to learn and improve my skills and
> simultaneously to contribute to Open Source.

I've a similar thread from this list for you to read. It was about one
year ago and mentions many interesting aspects:
http://sourceforge.net/mailarchive/forum.php?thread_name=8CF0583E44CD25E-80C-34801%40webmail-m016.sysops.aol.com&forum_name=jfreechart-developers

In addition I want to mention that JFreeChart already has copy at github
now: https://github.com/jfree/jfreechart-fse/

hth,
- martin

[jfreechart-dev] How can I help JFreeChart

[Bhushan K. <kbh...@gm...>]

Hi All,

I would like take this opportunity to introduce myself on JFreechart
developer list.

Myself Bhushan from Pune, India.  I have completed my graduation in zoology
and Post graduation in Bioinformatics from University of Pune .
 I am working in Java for more than 3 years.  I am experienced in all the
stages of Software development. I have worked as Domain Analyst and QA for
Life Sciences and Healthcare domain.

Bioinformatics, Java and Perl are my primary skills. In Java I use Core
Java, SWT, Swing and Spring.

Biological Data Analysis and visualization are my area of interest from
Bioinformatics. Writing a Good API, OOP's and Design Patterns are the area
of interest from Object Oriented language.
I would like to learn 'Art of API writing'. It is always a dream for me to
contribute in Open Source and write good API which other developers can
work with.

I would like to join JFreechart to learn and improve my skills and
simultaneously to contribute to Open Source.

I am new to Open Source and JFreechart.

Please let me know How can I help JFreehart.

Thanks
Bhushan

Re: [jfreechart-dev] X-Axis to many Label

[Martin H. <ma...@xs...>]

Hi!

On 30 Jan 2013, Christian Strotz wrote:
> My problem ist hat I have a big number of values in my chart. The x axis labels are all printed as "...".
> How can I say, it should just print every second or third label?

You are probably better of using the forum for such questions:
http://www.jfree.org/forum

Eventually an answer to your question could be found within the first few
hits: http://www.jfree.org/forum/search.php?keywords=label+truncation

It might als help changing the tick-mark unit.

hth,
- martin

[jfreechart-dev] [ jfreechart-Bugs-1919372 ] DomainMarker does not respect timezone of DateAxis

[SourceForge.net <no...@so...>]

Bugs item #1919372, was opened at 2008-03-19 01:55
Message generated for change (Comment added) made by 
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=115494&aid=1919372&group_id=15494

Please note that this message will contain a full copy of the comment thread,
including the initial issue submission, for this request,
not just the latest update.
Category: General
Group: 1.0.x
Status: Closed
Resolution: Wont Fix
Priority: 5
Private: No
Submitted By: Michael Kussmaul (kusmi)
Assigned to: David Gilbert (mungady)
Summary: DomainMarker does not respect timezone of DateAxis

Initial Comment:
When setting the timezone of a domainAxis:

  DateAxis domainAxis = new DateAxis(null, timeUtil.getForeignJavaTimeZone());

I see correct time-values in the graph, for ordinary plots (e.g. TimeSeries). But when I add a DomainMarker:

  final Marker marker = new ValueMarker(timestamp);
  marker.setPaint(Color.black);
  marker.setLabel(text);
  marker.setLabelAnchor(RectangleAnchor.TOP_RIGHT);
  marker.setLabelTextAnchor(TextAnchor.TOP_RIGHT);
  actualWindow.getPlot().addDomainMarker(marker);

The added DomainMarker does not show up in the correct place. I have the suspicion, it will always use the default time-zone of the local machine, because if I set the timezone to the same value as the default time-zone of the machine, then the marker is correct.

----------------------------------------------------------------------

Comment By: https://www.google.com/accounts ()
Date: 2012-11-26 17:51

Message:
The number of milliseconds since 1-Jan-1970 does not change as you cross
time zones. This is a terrible solution.

----------------------------------------------------------------------

Comment By: David Gilbert (mungady)
Date: 2008-03-26 07:36

Message:
Logged In: YES 
user_id=112975
Originator: NO

The ValueMarker is specified using just a value - if you want to plot that
on a time-series chart, then you need to specify the value as a number of
milliseconds since 1-Jan-1970 (the same encoding as java.util.Date).  Like
Date, you should think of this as TimeZone independent...so when you
calculate the millisecond value, you should take into account your target
time zone.

I've added a note about this to the JFreeChart Developer Guide.

Regards,

Dave Gilbert
JFreeChart Project Leader

----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=115494&aid=1919372&group_id=15494

[jfreechart-dev] [ jfreechart-Patches-3526173 ] Custom identifiers for CompassFormat

[SourceForge.net <no...@so...>]

Patches item #3526173, was opened at 2012-05-12 14:09
Message generated for change (Comment added) made by simon04
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=315494&aid=3526173&group_id=15494

Please note that this message will contain a full copy of the comment thread,
including the initial issue submission, for this request,
not just the latest update.
Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: simon04 (simon04)
Assigned to: Nobody/Anonymous (nobody)
Summary: Custom identifiers for CompassFormat

Initial Comment:
The attached patch allows to set custom identifiers for the directions in the constructor of CompassFormat. This allows to easily have a localized CompassFormat.

----------------------------------------------------------------------

>Comment By: simon04 (simon04)
Date: 2012-11-20 09:42

Message:
On 19/06/12 00:44, Simon Legner wrote (via email):
> Hi David,
> I don't consider my contribution important enough to be mentioned in the

> readme, but I don't oppose, neither.
> Cheers,
> Simon Legner (simon04)

----------------------------------------------------------------------

Comment By: David Gilbert (mungady)
Date: 2012-06-18 13:50

Message:
This looks good.  I'd prefer to add your full name in the source code
credits - are you OK with that (in which case can you e-mail it to me?).

----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=315494&aid=3526173&group_id=15494

[jfreechart-dev] [ jfreechart-Bugs-3571808 ] RadialGradientPaint with MultiplePiePlot is not radiall

[SourceForge.net <no...@so...>]

Bugs item #3571808, was opened at 2012-09-25 23:35
Message generated for change (Comment added) made by sandstones
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=115494&aid=3571808&group_id=15494

Please note that this message will contain a full copy of the comment thread,
including the initial issue submission, for this request,
not just the latest update.
Category: General
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: sandstones (sandstones)
Assigned to: Nobody/Anonymous (nobody)
Summary: RadialGradientPaint with MultiplePiePlot is not radiall

Initial Comment:
Using a RadialGradientPaint with a MultiplePiePlot, one would expect that the radial gradient applies to each pie plot, so that the gradient looks radial inside of each pie plot.  Instead, the gradient is applied to the entire plot area, which has the effect of making the same slice of pie a different shade in the different pies.  

In the attached plot 

----------------------------------------------------------------------

>Comment By: sandstones (sandstones)
Date: 2012-10-29 21:23

Message:
I have come up with a fix that calculates the center of the plot and
recalculates the radial gradient for each sub-plot.  Based it on another
comment about radial plots from a few years ago.  Is there a method to feed
that back?

----------------------------------------------------------------------

Comment By: Source Dave (sourcedave)
Date: 2012-10-17 00:09

Message:
Firstly,
if you don't take the time to attach an Image that actually looks like a
RadialGradientPaint...
...then don't be surprised that your posting is not taken seriously.
See here for some examples
http://docs.oracle.com/javase/6/docs/api/java/awt/RadialGradientPaint.html

Secondly,
my superficial understanding of how JFreeChart paints, is that it depends
where the Canvas is defined for each object being painted & all objects
probably share the same Canvas & are clipped to paint only the required
object & it actually makes sense the way JFreeChart does it, because
different Objects using the same GradientPaint but different colours will
show continuity in form & a transition in colour.  The same is true of
Image Paints: it actually looks really good if a large Image extends over
several Bars in a 3DBarChart (particularly when my JFreeChart PaintAlpha
Patch becomes generally available, which allows 3D effects with various
Paint's, including Images). See here for details of that:
https://sourceforge.net/tracker/?func=detail&aid=3204823&group_id=15494&atid=315494


----------------------------------------------------------------------

Comment By: sandstones (sandstones)
Date: 2012-09-25 23:40

Message:
Was going to say that in the attached plot, the darker shades should be in
the middle of each pie; instead the darker shades are in the middle of the
whole plot, and for example, the light brown and yellow slices, which
should be the same color, are looking very different.

----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=115494&aid=3571808&group_id=15494

[jfreechart-dev] [ jfreechart-Bugs-3003918 ] HeadlessException with headless=true and JRE 1.6.0_20-b02

[SourceForge.net <no...@so...>]

Bugs item #3003918, was opened at 2010-05-19 01:15
Message generated for change (Comment added) made by 
You can respond by visiting: 
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Please note that this message will contain a full copy of the comment thread,
including the initial issue submission, for this request,
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Category: None
Group: 1.0.x
Status: Closed
Resolution: Invalid
Priority: 5
Private: No
Submitted By: Steffen Ewert (stewert)
Assigned to: Nobody/Anonymous (nobody)
Summary: HeadlessException with headless=true and JRE 1.6.0_20-b02

Initial Comment:
Since yesterday I get for my JSF application (running on tomcat) a java.awt.HeadlessException while calling ChartFactory.createXYStepChart(...). java.awt.headless is set to true.

Here my Code:

System.out.println("_________________java.awt.headless is " + System.getProperty("java.awt.headless"));
    // create the chart:
    JFreeChart chart = ChartFactory.createXYStepChart(
        null, null, "%", dataset, PlotOrientation.VERTICAL, true, false, false);

And here a part of the exception:

_________________java.awt.headless is true
...
...
...
java.awt.HeadlessException
   at sun.java2d.HeadlessGraphicsEnvironment.getDefaultScreenDevice(HeadlessGraphicsEnvironment.java:64)
   at com.birosoft.liquid.skin.SkinImageCache.<clinit>(SkinImageCache.java:45)
   at com.birosoft.liquid.LiquidLookAndFeel.loadIconImmediately(LiquidLookAndFeel.java:638)
   at com.birosoft.liquid.LiquidLookAndFeel.loadIcon(LiquidLookAndFeel.java:626)
   at com.birosoft.liquid.LiquidLookAndFeel.initComponentDefaults(LiquidLookAndFeel.java:461)
   at javax.swing.plaf.basic.BasicLookAndFeel.getDefaults(BasicLookAndFeel.java:130)
   at javax.swing.UIManager.setLookAndFeel(UIManager.java:514)
   at javax.swing.UIManager.setLookAndFeel(UIManager.java:558)
   at javax.swing.UIManager.initializeDefaultLAF(UIManager.java:1317)
   at javax.swing.UIManager.initialize(UIManager.java:1406)
   at javax.swing.UIManager.maybeInitialize(UIManager.java:1394)
   at javax.swing.UIManager.getDefaults(UIManager.java:633)
   at javax.swing.UIManager.getColor(UIManager.java:675)
   at org.jfree.chart.JFreeChart.<clinit>(JFreeChart.java:261)
   at org.jfree.chart.ChartFactory.createXYStepChart(ChartFactory.java:1803)
   at cow.k7progress.useCases.report.chart.UCGenerateScheduleRealObjectChart.start(UCGenerateScheduleRealObjectChart.java:161)

Interesting are the "com.birosoft...." lines in the stacktrace. I have never heared something about birosoft. Then I have check in which jar the com.birosoft classes are stored and have find out that the jar is .../jre/lib/ext/liquidInf.jar of the JRE 1.6.0_20-b02. It seems that the JRE 1.6.0_20-b02 was installed some days ago (may be a automatic update ...). The JRE 1.6.0_17 don't have this liquidInf.jar. I have switched back to the JRE 1.6.0_17 and all running fine without any Exceptions ... :-)

I run my JSF-application in tomcat on a openSuse 11.2 (this is my development machine; tomcat will be started over the eclipse IDE).

See also http://www.jfree.org/phpBB2/viewtopic.php?f=3&t=30073

Could you check if this is a bug in JFree or a bug of JRE 1.6.0_20 or is something other wrong with my installation?

Do you need more information? Please contact me.

Thanks,
Steffen

----------------------------------------------------------------------

Comment By: https://www.google.com/accounts ()
Date: 2012-10-29 09:18

Message:
Even if you don't fix this, showing a workaround would be great!

----------------------------------------------------------------------

Comment By: https://www.google.com/accounts ()
Date: 2012-10-29 09:17

Message:
I have the same problem. When I'm SSH-ing remotely to my application that
uses JFreeChart and using it to generate a chart to a PNG file, I get:

	at java.awt.GraphicsEnvironment.createGE(GraphicsEnvironment.java:118)
	at
java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnvironment.java:81)
	at sun.swing.SwingUtilities2.isLocalDisplay(SwingUtilities2.java:1457)
	at
javax.swing.plaf.metal.MetalLookAndFeel.initComponentDefaults(MetalLookAndFeel.java:1556)
	at
javax.swing.plaf.basic.BasicLookAndFeel.getDefaults(BasicLookAndFeel.java:148)
	at
javax.swing.plaf.metal.MetalLookAndFeel.getDefaults(MetalLookAndFeel.java:1592)
	at javax.swing.UIManager.setLookAndFeel(UIManager.java:535)
	at javax.swing.UIManager.setLookAndFeel(UIManager.java:575)
	at javax.swing.UIManager.initializeDefaultLAF(UIManager.java:1343)
	at javax.swing.UIManager.initialize(UIManager.java:1432)
	at javax.swing.UIManager.maybeInitialize(UIManager.java:1420)
	at javax.swing.UIManager.getDefaults(UIManager.java:655)
	at javax.swing.UIManager.getColor(UIManager.java:697)
	at org.jfree.chart.JFreeChart.<clinit>(JFreeChart.java:258)
	at org.jfree.chart.ChartFactory.createXYLineChart(ChartFactory.java:1748)

Inspecting the JFreeChart code, specifically: 

   
http://jfreechart.cvs.sourceforge.net/viewvc/jfreechart/jfreechart/source/org/jfree/chart/JFreeChart.java?revision=1.34.2.21&view=markup

it appears that there is a static field:

    public static final Paint DEFAULT_BACKGROUND_PAINT  =
UIManager.getColor("Panel.background");

Apparently, getting the color from the UI manager cannot be done remotely
without a UI session (this also happens to me if the display goes into
screen saving mode).
I am running this on Mac OS X Lion, Oracle JVM 1.7, update 9. I don't think
this is a UI manager problem.

This is the only place in that file that the UIManager is used. Perhaps it
would make sense to fix this somehow or suggest a workaround - apparently,
it makes it impossible to use JFreeChart other than from a UI.

----------------------------------------------------------------------

Comment By: Thomas Morgner (taqua)
Date: 2010-09-28 05:00

Message:
This is a bug in your Look-And-Feel. Someone installed that Look-And-Feel
in your JDK's installation directory and apparently your application
manually activates it (as a custom look-and-feel is not used unless you
explicitly request it.)  This seems to be a clear bug in their
implementation, as a call to UIManager.getDefaults() must never result in a
error.

----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=115494&aid=3003918&group_id=15494

[jfreechart-dev] [ jfreechart-Bugs-3003918 ] HeadlessException with headless=true and JRE 1.6.0_20-b02

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Bugs item #3003918, was opened at 2010-05-19 01:15
Message generated for change (Comment added) made by 
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=115494&aid=3003918&group_id=15494

Please note that this message will contain a full copy of the comment thread,
including the initial issue submission, for this request,
not just the latest update.
Category: None
Group: 1.0.x
Status: Closed
Resolution: Invalid
Priority: 5
Private: No
Submitted By: Steffen Ewert (stewert)
Assigned to: Nobody/Anonymous (nobody)
Summary: HeadlessException with headless=true and JRE 1.6.0_20-b02

Initial Comment:
Since yesterday I get for my JSF application (running on tomcat) a java.awt.HeadlessException while calling ChartFactory.createXYStepChart(...). java.awt.headless is set to true.

Here my Code:

System.out.println("_________________java.awt.headless is " + System.getProperty("java.awt.headless"));
    // create the chart:
    JFreeChart chart = ChartFactory.createXYStepChart(
        null, null, "%", dataset, PlotOrientation.VERTICAL, true, false, false);

And here a part of the exception:

_________________java.awt.headless is true
...
...
...
java.awt.HeadlessException
   at sun.java2d.HeadlessGraphicsEnvironment.getDefaultScreenDevice(HeadlessGraphicsEnvironment.java:64)
   at com.birosoft.liquid.skin.SkinImageCache.<clinit>(SkinImageCache.java:45)
   at com.birosoft.liquid.LiquidLookAndFeel.loadIconImmediately(LiquidLookAndFeel.java:638)
   at com.birosoft.liquid.LiquidLookAndFeel.loadIcon(LiquidLookAndFeel.java:626)
   at com.birosoft.liquid.LiquidLookAndFeel.initComponentDefaults(LiquidLookAndFeel.java:461)
   at javax.swing.plaf.basic.BasicLookAndFeel.getDefaults(BasicLookAndFeel.java:130)
   at javax.swing.UIManager.setLookAndFeel(UIManager.java:514)
   at javax.swing.UIManager.setLookAndFeel(UIManager.java:558)
   at javax.swing.UIManager.initializeDefaultLAF(UIManager.java:1317)
   at javax.swing.UIManager.initialize(UIManager.java:1406)
   at javax.swing.UIManager.maybeInitialize(UIManager.java:1394)
   at javax.swing.UIManager.getDefaults(UIManager.java:633)
   at javax.swing.UIManager.getColor(UIManager.java:675)
   at org.jfree.chart.JFreeChart.<clinit>(JFreeChart.java:261)
   at org.jfree.chart.ChartFactory.createXYStepChart(ChartFactory.java:1803)
   at cow.k7progress.useCases.report.chart.UCGenerateScheduleRealObjectChart.start(UCGenerateScheduleRealObjectChart.java:161)

Interesting are the "com.birosoft...." lines in the stacktrace. I have never heared something about birosoft. Then I have check in which jar the com.birosoft classes are stored and have find out that the jar is .../jre/lib/ext/liquidInf.jar of the JRE 1.6.0_20-b02. It seems that the JRE 1.6.0_20-b02 was installed some days ago (may be a automatic update ...). The JRE 1.6.0_17 don't have this liquidInf.jar. I have switched back to the JRE 1.6.0_17 and all running fine without any Exceptions ... :-)

I run my JSF-application in tomcat on a openSuse 11.2 (this is my development machine; tomcat will be started over the eclipse IDE).

See also http://www.jfree.org/phpBB2/viewtopic.php?f=3&t=30073

Could you check if this is a bug in JFree or a bug of JRE 1.6.0_20 or is something other wrong with my installation?

Do you need more information? Please contact me.

Thanks,
Steffen

----------------------------------------------------------------------

Comment By: https://www.google.com/accounts ()
Date: 2012-10-29 09:17

Message:
I have the same problem. When I'm SSH-ing remotely to my application that
uses JFreeChart and using it to generate a chart to a PNG file, I get:

	at java.awt.GraphicsEnvironment.createGE(GraphicsEnvironment.java:118)
	at
java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnvironment.java:81)
	at sun.swing.SwingUtilities2.isLocalDisplay(SwingUtilities2.java:1457)
	at
javax.swing.plaf.metal.MetalLookAndFeel.initComponentDefaults(MetalLookAndFeel.java:1556)
	at
javax.swing.plaf.basic.BasicLookAndFeel.getDefaults(BasicLookAndFeel.java:148)
	at
javax.swing.plaf.metal.MetalLookAndFeel.getDefaults(MetalLookAndFeel.java:1592)
	at javax.swing.UIManager.setLookAndFeel(UIManager.java:535)
	at javax.swing.UIManager.setLookAndFeel(UIManager.java:575)
	at javax.swing.UIManager.initializeDefaultLAF(UIManager.java:1343)
	at javax.swing.UIManager.initialize(UIManager.java:1432)
	at javax.swing.UIManager.maybeInitialize(UIManager.java:1420)
	at javax.swing.UIManager.getDefaults(UIManager.java:655)
	at javax.swing.UIManager.getColor(UIManager.java:697)
	at org.jfree.chart.JFreeChart.<clinit>(JFreeChart.java:258)
	at org.jfree.chart.ChartFactory.createXYLineChart(ChartFactory.java:1748)

Inspecting the JFreeChart code, specifically: 

   
http://jfreechart.cvs.sourceforge.net/viewvc/jfreechart/jfreechart/source/org/jfree/chart/JFreeChart.java?revision=1.34.2.21&view=markup

it appears that there is a static field:

    public static final Paint DEFAULT_BACKGROUND_PAINT  =
UIManager.getColor("Panel.background");

Apparently, getting the color from the UI manager cannot be done remotely
without a UI session (this also happens to me if the display goes into
screen saving mode).
I am running this on Mac OS X Lion, Oracle JVM 1.7, update 9. I don't think
this is a UI manager problem.

This is the only place in that file that the UIManager is used. Perhaps it
would make sense to fix this somehow or suggest a workaround - apparently,
it makes it impossible to use JFreeChart other than from a UI.

----------------------------------------------------------------------

Comment By: Thomas Morgner (taqua)
Date: 2010-09-28 05:00

Message:
This is a bug in your Look-And-Feel. Someone installed that Look-And-Feel
in your JDK's installation directory and apparently your application
manually activates it (as a custom look-and-feel is not used unless you
explicitly request it.)  This seems to be a clear bug in their
implementation, as a call to UIManager.getDefaults() must never result in a
error.

----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=115494&aid=3003918&group_id=15494

[jfreechart-dev] [ jfreechart-Patches-3579037 ] PaintAlpha - use reflection to compile in JDK1.4

[SourceForge.net <no...@so...>]

Patches item #3579037, was opened at 2012-10-21 22:11
Message generated for change (Tracker Item Submitted) made by mungady
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=315494&aid=3579037&group_id=15494

Please note that this message will contain a full copy of the comment thread,
including the initial issue submission, for this request,
not just the latest update.
Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: David Gilbert (mungady)
Assigned to: David Gilbert (mungady)
Summary: PaintAlpha - use reflection to compile in JDK1.4

Initial Comment:
From Dave Law

----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=315494&aid=3579037&group_id=15494

[jfreechart-dev] [ jfreechart-Bugs-3571808 ] RadialGradientPaint with MultiplePiePlot is not radiall

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Bugs item #3571808, was opened at 2012-09-25 23:35
Message generated for change (Comment added) made by sourcedave
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=115494&aid=3571808&group_id=15494

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including the initial issue submission, for this request,
not just the latest update.
Category: General
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: sandstones (sandstones)
Assigned to: Nobody/Anonymous (nobody)
Summary: RadialGradientPaint with MultiplePiePlot is not radiall

Initial Comment:
Using a RadialGradientPaint with a MultiplePiePlot, one would expect that the radial gradient applies to each pie plot, so that the gradient looks radial inside of each pie plot.  Instead, the gradient is applied to the entire plot area, which has the effect of making the same slice of pie a different shade in the different pies.  

In the attached plot 

----------------------------------------------------------------------

Comment By: Source Dave (sourcedave)
Date: 2012-10-17 00:09

Message:
Firstly,
if you don't take the time to attach an Image that actually looks like a
RadialGradientPaint...
...then don't be surprised that your posting is not taken seriously.
See here for some examples
http://docs.oracle.com/javase/6/docs/api/java/awt/RadialGradientPaint.html

Secondly,
my superficial understanding of how JFreeChart paints, is that it depends
where the Canvas is defined for each object being painted & all objects
probably share the same Canvas & are clipped to paint only the required
object & it actually makes sense the way JFreeChart does it, because
different Objects using the same GradientPaint but different colours will
show continuity in form & a transition in colour.  The same is true of
Image Paints: it actually looks really good if a large Image extends over
several Bars in a 3DBarChart (particularly when my JFreeChart PaintAlpha
Patch becomes generally available, which allows 3D effects with various
Paint's, including Images). See here for details of that:
https://sourceforge.net/tracker/?func=detail&aid=3204823&group_id=15494&atid=315494


----------------------------------------------------------------------

Comment By: sandstones (sandstones)
Date: 2012-09-25 23:40

Message:
Was going to say that in the attached plot, the darker shades should be in
the middle of each pie; instead the darker shades are in the middle of the
whole plot, and for example, the light brown and yellow slices, which
should be the same color, are looking very different.

----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=115494&aid=3571808&group_id=15494

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[jfreechart-dev] [ jfreechart-Bugs-3571808 ] RadialGradientPaint with MultiplePiePlot is not radiall

[SourceForge.net <no...@so...>]

Bugs item #3571808, was opened at 2012-09-25 23:35
Message generated for change (Comment added) made by sandstones
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=115494&aid=3571808&group_id=15494

Please note that this message will contain a full copy of the comment thread,
including the initial issue submission, for this request,
not just the latest update.
Category: General
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: sandstones (sandstones)
Assigned to: Nobody/Anonymous (nobody)
Summary: RadialGradientPaint with MultiplePiePlot is not radiall

Initial Comment:
Using a RadialGradientPaint with a MultiplePiePlot, one would expect that the radial gradient applies to each pie plot, so that the gradient looks radial inside of each pie plot.  Instead, the gradient is applied to the entire plot area, which has the effect of making the same slice of pie a different shade in the different pies.  

In the attached plot 

----------------------------------------------------------------------

>Comment By: sandstones (sandstones)
Date: 2012-09-25 23:40

Message:
Was going to say that in the attached plot, the darker shades should be in
the middle of each pie; instead the darker shades are in the middle of the
whole plot, and for example, the light brown and yellow slices, which
should be the same color, are looking very different.

----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=115494&aid=3571808&group_id=15494

[jfreechart-dev] [ jfreechart-Bugs-3571808 ] RadialGradientPaint with MultiplePiePlot is not radiall

[SourceForge.net <no...@so...>]

Bugs item #3571808, was opened at 2012-09-25 23:35
Message generated for change (Tracker Item Submitted) made by sandstones
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=115494&aid=3571808&group_id=15494

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including the initial issue submission, for this request,
not just the latest update.
Category: General
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: sandstones (sandstones)
Assigned to: Nobody/Anonymous (nobody)
Summary: RadialGradientPaint with MultiplePiePlot is not radiall

Initial Comment:
Using a RadialGradientPaint with a MultiplePiePlot, one would expect that the radial gradient applies to each pie plot, so that the gradient looks radial inside of each pie plot.  Instead, the gradient is applied to the entire plot area, which has the effect of making the same slice of pie a different shade in the different pies.  

In the attached plot 

----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=115494&aid=3571808&group_id=15494

[jfreechart-dev] [ jfreechart-Bugs-3016544 ] Potential NPE in XYLineAndShapeRenderer

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Bugs item #3016544, was opened at 2010-06-15 07:32
Message generated for change (Comment added) made by mungady
You can respond by visiting: 
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Category: None
Group: None
>Status: Closed
>Resolution: Fixed
Priority: 5
Private: No
Submitted By: Tom Moore (opeongo)
>Assigned to: David Gilbert (mungady)
Summary: Potential NPE in XYLineAndShapeRenderer

Initial Comment:
The drawItem method will try to look up optional entity information, but will fail with an NPE if info.getOwner() returns null.  This can happen if the draw method is called on the  JFreeChart object.  I suggest that the code in drawItem should include a test for the owner being null.

          if (state.getInfo() != null && state.getInfo().getOwner() != null) {
                 entities = state.getInfo().getOwner().getEntityCollection();
            }



----------------------------------------------------------------------

>Comment By: David Gilbert (mungady)
Date: 2012-09-23 13:12

Message:
I'm not able to see how this can be triggered, but it will not hurt to put
the null check so I've done this for the upcoming 1.0.15 release.

----------------------------------------------------------------------

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[jfreechart-dev] [ jfreechart-Bugs-3222888 ] jfreechart with oracle forms

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Bugs item #3222888, was opened at 2011-03-18 08:00
Message generated for change (Settings changed) made by mungady
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Category: General
Group: None
>Status: Closed
Resolution: None
Priority: 5
Private: No
Submitted By: Hugo Ramos (hidetsugu)
Assigned to: Nobody/Anonymous (nobody)
Summary: jfreechart with oracle forms

Initial Comment:
When integrating jfreechart with oracle forms, the order of the data that is passed to the graph must be in the same order the records are displayed. When using FBEAN.add_arg(hArgs, to_char(:DISPLAY.SAL)); FBEAN.add_arg(hArgs, to_char(:DISPLAY.EMPNO));, this can't be switched in order to switch axis because it will cause no data display. 

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Comment By: Hugo Ramos (hidetsugu)
Date: 2011-03-18 08:53

Message:
Actually the problem is with the data. I was using values too high, with a
dot and a comma. Removing the decimal, solved it. 

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[jfreechart-dev] [ jfreechart-Bugs-3226753 ] IndexOutOfBoundsException with concurrent updates

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Bugs item #3226753, was opened at 2011-03-19 11:39
Message generated for change (Comment added) made by mungady
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Category: General
Group: 1.0.x
>Status: Closed
Resolution: None
Priority: 5
Private: No
Submitted By: Yanick Rochon (yanickrochon)
>Assigned to: David Gilbert (mungady)
Summary: IndexOutOfBoundsException with concurrent updates

Initial Comment:
First, thank you for this incredible project. I had just started writing my own when I found JFreeChart and swiftly trashed what I started for this.

Unto the main subject now :

I created a sample project to show JFreeChart (1.0.13 with JCommon 1.0.16) as a potential library and I found it throwing IndexOutOfBoundException once in a while. I provided the sample project and here is the stacktrace (note that the stacktrace does not contain any of the sample's class, so the problem does not lie in the sample). Also, the exception seems to be thrown at random (it is unpredictable to say when it will occur)


Exception in thread "AWT-EventQueue-0" java.lang.IndexOutOfBoundsException: Index: 120, Size: 120
	at java.util.ArrayList.RangeCheck(ArrayList.java:547)
	at java.util.ArrayList.get(ArrayList.java:322)
	at org.jfree.data.time.TimeSeries.getDataItem(TimeSeries.java:330)
	at org.jfree.data.time.TimeSeriesCollection.getXValue(TimeSeriesCollection.java:421)
	at org.jfree.chart.renderer.xy.XYLineAndShapeRenderer.drawSecondaryPass(XYLineAndShapeRenderer.java:1139)
	at org.jfree.chart.renderer.xy.XYLineAndShapeRenderer.drawItem(XYLineAndShapeRenderer.java:925)
	at org.jfree.chart.plot.XYPlot.render(XYPlot.java:3738)
	at org.jfree.chart.plot.XYPlot.draw(XYPlot.java:3310)
	at org.jfree.chart.JFreeChart.draw(JFreeChart.java:1235)
	at org.jfree.chart.ChartPanel.paintComponent(ChartPanel.java:1663)
	at javax.swing.JComponent.paint(JComponent.java:1029)
	at javax.swing.JComponent.paintToOffscreen(JComponent.java:5124)
	at javax.swing.RepaintManager$PaintManager.paintDoubleBuffered(RepaintManager.java:1479)
	at javax.swing.RepaintManager$PaintManager.paint(RepaintManager.java:1410)
	at javax.swing.BufferStrategyPaintManager.paint(BufferStrategyPaintManager.java:294)
	at javax.swing.RepaintManager.paint(RepaintManager.java:1224)
	at javax.swing.JComponent._paintImmediately(JComponent.java:5072)
	at javax.swing.JComponent.paintImmediately(JComponent.java:4882)
	at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:785)
	at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:713)
	at javax.swing.RepaintManager.seqPaintDirtyRegions(RepaintManager.java:693)
	at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run(SystemEventQueueUtilities.java:125)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:642)
	at java.awt.EventQueue.access$000(EventQueue.java:85)
	at java.awt.EventQueue$1.run(EventQueue.java:603)
	at java.awt.EventQueue$1.run(EventQueue.java:601)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:612)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)


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>Comment By: David Gilbert (mungady)
Date: 2012-09-23 12:52

Message:
JFreeChart is not thread-safe.  Since the datasets will be read in the
event dispatch thread while painting charts, you should keep all your
dataset updates also on the event dispatch thread to avoid concurrent
modification exceptions and other issues.

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[jfreechart-dev] [ jfreechart-Bugs-3253345 ] XYBarRenderer does not lookup series shape

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Bugs item #3253345, was opened at 2011-03-28 11:06
Message generated for change (Comment added) made by mungady
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Category: General
Group: None
>Status: Closed
>Resolution: Accepted
Priority: 5
Private: No
Submitted By: Jeff Storey (jeffastorey)
>Assigned to: David Gilbert (mungady)
Summary: XYBarRenderer does not lookup series shape

Initial Comment:
When the XYBarRenderer is creating a legend item (in the getLegendItem method), it does not lookup the series shape, rather it uses the legendBar. The value returned from lookupSeriesShape should be used to allow a per series customization of shapes.

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>Comment By: David Gilbert (mungady)
Date: 2012-09-23 12:49

Message:
I agree, but I don't want to change this in the 1.0.x series because it
would break API compatibility.  However, I've made the change in the
JFreeChart FSE version on GitHub, so this feature will be in a future
release of JFreeChart.

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[jfreechart-dev] [ jfreechart-Bugs-3427650 ] wrong mouse event to range value convertion

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Bugs item #3427650, was opened at 2011-10-23 20:11
Message generated for change (Comment added) made by mungady
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Category: General
Group: 1.0.x
>Status: Closed
>Resolution: Rejected
Priority: 5
Private: No
Submitted By: Tácio S. Diogo (taciosd)
>Assigned to: David Gilbert (mungady)
Summary: wrong mouse event to range value convertion

Initial Comment:
Hi,
My application uses a CombinedDomainXYPlot with two XYPlot`s.
I extended the ChartPanel class and added a listener to implement the chartMouseClicked method.
I use this event method to add line annotations to the plot.

Here is part of the code i did inside chartMouseClicked(...):

Point point = event.getTrigger().getPoint();
Point2D point2d = translateScreenToJava2D(point);
Rectangle2D plotArea = getChartRenderingInfo().getPlotInfo().getDataArea();
RectangleEdge rangeAxisEdge = candlestickPlot.getRangeAxisEdge();
double y = candlestickPlot.getRangeAxis().java2DToValue(point2d.getY(), plotArea, rangeAxisEdge);

The translated y value is always ~33% greater than the real range value...
I searched in forums but didn`t find anything like this problem. Am i doing something wrong?

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>Comment By: David Gilbert (mungady)
Date: 2012-09-23 12:32

Message:
You need to get the data area for the appropriate *subplot* and use that to
convert the screen coordinates to chart values.  Closing this item.

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[jfreechart-dev] [ jfreechart-Bugs-3476627 ] Axis labels are eventually clipped

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Bugs item #3476627, was opened at 2012-01-20 04:53
Message generated for change (Comment added) made by mungady
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Martin Höller (matinh)
Assigned to: Nobody/Anonymous (nobody)
Summary: Axis labels are eventually clipped

Initial Comment:
In some situations JFreeChart clips the labels of (vertical, range-) axis.
This depends on the used font-size, the configured padding for the chart and of course the tick untis.

Attached is a self-contained demo that demonstrates the problem with JFreeChart 1.0.14.
See the comments inside the class to work around the problem or make it more obvious.

The bug #925902 may be related to this one. It describles a similar problem but with horizontal clipping of axis labels.

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>Comment By: David Gilbert (mungady)
Date: 2012-09-23 12:29

Message:
In the layout calculations, only the width of the y-axis is adjusted for
the size of the labels.  The axis is then allowed to draw outside it's
bounds at the top and bottom if it needs to, which is where you are seeing
this clipping (very often it is not an issue because there is sufficient
white-space around the chart).  I don't know what is a good solution for
this problem.

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Comment By: Martin Höller (matinh)
Date: 2012-01-20 04:54

Message:
Note, that you eventually have to resize the chart window to see the bug.

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