[jfreechart-dev] [ jfreechart-Bugs-1562744 ] Duplicated items in legend

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

Bugs item #1562744, was opened at 2006-09-21 09:12
Message generated for change (Comment added) made by mungady
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=115494&aid=1562744&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: None
Priority: 5
Private: Yes
Submitted By: misterblue38 (misterblue38)
Assigned to: David Gilbert (mungady)
Summary: Duplicated items in legend

Initial Comment:
Hello,

Creating a barchart, it happens sometimes that items 
of the legend are duplicated (two times or three times 
the same legend).

>From what I understand legend is built by JfreeChart 
library, taking information from dataset (if dataset 
includes data for 2 bars A and B, then legend will 
show A and B).

Attached is an exemple of duplicated legend. In this 
exemple 4 bars types are visible (actual 2005 & 2006, 
budget 2006 and YTD 2006), with duplication.

The version of JfreeChart used is 1.0.1.

Thanks in advance for your help / clarification about 
this subject.

Laurent Givaudan.

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

>Comment By: David Gilbert (mungady)
Date: 2007-01-25 14:25

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

It's probably too late, but...

You need to switch the legend flag in the call to createBarChart(...) to
false, then create a LegendTitle manually.  Use the first renderer as the
LegendItemSource, not the plot, then you will only get the items from
dataset 1 in your legend.  Add the legend to the chart using the
addLegend() method (which is just an alias for addSubtitle()).

Regards,

Dave Gilbert
JFreeChart Project Leader

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

Comment By: misterblue38 (misterblue38)
Date: 2006-10-11 09:12

Message:
Logged In: YES 
user_id=1603182

Hello,

Any news regarding this issue?

Thanks a lot in advance

Laurent

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

Comment By: misterblue38 (misterblue38)
Date: 2006-09-25 13:09

Message:
Logged In: YES 
user_id=1603182

Hello,

Below is a part of the code used to generate graph. There 
are 2 dataset as you guessed :
 
// name of 3 series to be displayed on graph / legend
String sActualYear = "Actual("+sYear+")";	
String sActualLastYear = "Actual("+sLastYear+")";
String sYtd = "Year to date ("+sYear+")";
String sBudgt = "Budget ("+sYear+")";

dcDataSetReturn = new DefaultCategoryDataset[2];
dcDataSetReturn[0] = new DefaultCategoryDataset();
dcDataSetReturn[1] = new DefaultCategoryDataset();
            

dcDataSetReturn[0].addValue(...,sActualLastYear,...);
dcDataSetReturn[0].addValue(...,sActualLastYear,...);
....
dcDataSetReturn[0].addValue(...,sActualYear,...);
dcDataSetReturn[0].addValue(...,sActualYear,...);
...

dcDataSetReturn[1].addValue(...,sYtd, ...);
dcDataSetReturn[1].addValue(...,sYtd, ...);
...
dcDataSetReturn[1].addValue(...,sBudgt , ...);
dcDataSetReturn[1].addValue(...,sBudgt , ...);
...

JFreeChart chart = ChartFactory.createBarChart(
                    title // chart title
                    "", // domain axis label
                    "Monthly Value", // range axis label
                    dcDataSetReturn[0], // data
                    PlotOrientation.VERTICAL, true, // 
include
                    // legend
                    true, // tooltips?
                    false // URL generator? Not required...
                    );
 CategoryPlot plot = (CategoryPlot) chart.getPlot();

plot.setDataset(1, dcDataSetReturn[1]);
plot.mapDatasetToRangeAxis(1, 1);           

CategoryAxis domainAxis = plot.getDomainAxis();
domainAxis.setCategoryLabelPositions
(CategoryLabelPositions.DOWN_45);
 final ValueAxis axis2 = new NumberAxis("Yearly Value");
axis2.setAutoRange(true);
plot.setRangeAxis(1, axis2);
BarRenderer renderer2 = new BarRenderer();
renderer2.setToolTipGenerator(new 
StandardCategoryToolTipGenerator());
plot.setRenderer(1, renderer2);
plot.setDatasetRenderingOrder
(DatasetRenderingOrder.FORWARD);

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

Comment By: David Gilbert (mungady)
Date: 2006-09-25 09:54

Message:
Logged In: YES 
user_id=112975

Can you post the code you use to create the chart? 
Presumably you have two datasets, one for the monthly
figures and one for the yearly figures...maybe there is a
way to set up the datasets to avoid the duplication.

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

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=115494&aid=1562744&group_id=15494