gnuplot-info — For questions and discussion about gnuplot

[Gnuplot-info] acsplines question

[D. R. E. <doc...@gm...>]

I use the acsplines option quite a lot, but I now need a way to use the
plotted data as input to an external routine.

The command I currently use is of the form: "plot '<xxx>' using
($1):($2):(0.001) smooth acsplines notitle"

How would I do one of the following:

1. Output the data that are plotted by the above acsplines command (so that
they can be read by another program)?

2. Find documentation for the precise algorithm that the acsplines option uses?

Or, I suppose, any other way people can think of to obtain the plotted
acsplines data in a way that can be used by another program.

[Gnuplot-info] pdf terminal + font embedding?

[<sko...@up...>]

Hi,

does libPDF support font-embedding? If so, does gnuplot's pdf terminal
do so too? And how could i enable it?

Well, i'm just using the default Helvetica font, but i'd really like
font embedding just to go for sure that it's printed correctly everywhere=
=2E

Any ideas?


Thanks,
  Sven

[Gnuplot-info] How to change line color independtly of the line tyle

[xiaomimi <xia...@ho...>]

e.g., how can I plot a dashed red line instead of a solid red line by
default?
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[Gnuplot-info] Not big enough, so wht you waiting fo?

[Sales <sa...@is...>]

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-- 
tuquqmpupqqfqhppuhnonunjnrpjnonuojoroprjonnionornrokomosngoiofsnooosns

[Gnuplot-info] ascending

[default <rx...@pr...>]

CAON Now Holds 12 Environmental Patents! Investors Respond!

Chan-On International Inc.
Symbol: CAON
Close: $0.72 UP 4.35%

CAON acquires Harbin Hongbo and its 12 patents. This company's new
direction was released in a fact sheet Friday. Investors are already
jumping all over it. Read the release and get all over CAON first thing
Monday!

In his quarterly report titled, "California: A Weak Expansion  Would Be
Welcome," Dr. The other county increases  were more moderate.

The bill was introduced  today in the Senate. DataQuick statistics are
based on county records data rather  than MLS information.

Customized, instructor led training sessions for numerous  Freddie Mac
products and services.
, said interest rates have dropped in recent weeks. We will not relent
until the Community Choice in Real Estate Act  becomes the law of the
land.

"The performance of the current housing market is  nothing short of
astounding," he said.

DataQuick statistics are based on county records data rather  than MLS
information. "  The Los Angeles Report If California as a whole is in
recession, blame the north.

In California, Senior Economist Tom Lieser would welcome even the
sluggish  growth Leamer continues to forecast for the nation. Seasonally
adjusted  annual rates are used in reporting monthly data to factor out
seasonal variations  in resale activity.

Took Took – oh no take it!

[Sales <sa...@we...>]

Are you sure that your girlfriend is satisfied 
with the size of your `little friend`

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-- 
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Re: [Gnuplot-info] Display Image using gnuplot...

[Thomas S. <t.s...@fz...>]

as you can see in the demo gallery

http://gnuplot.sourceforge.net/demo/image.html

in 3d only 'image' works, not 'rgbimage'.

also see the end of the section '43.59.8.18 Rgbimage' in the gnuplot manual.

that means, greyscale images are possible, but not color images,
unless you are able to have all the colors you need within one palette
(see 'set palette rgbformulae') and convert your image from rgb into
an image where each pixels only contains one value which addresses
the corresponding color in the palette (sounds complicated...).


Soon wrote:
> 
> Thanks so much! I'm able to display the image now. But I still have 1 more
> question: How to display a 2D image in a 3D space?
> 
> To display 2D image, I use the folowing command:
> plot 'Image.bin' binary array=308x785:785x308 format='%uchar' dx=2:1
> dy=1:2 origin=(0,0):(785,785) w rgbimage
> 
> But when I modify the command in order to display it in 3D:
> splot 'Image.bin' binary array=308x785x100:100x785x308 format='%uchar'
> dx=2:1 dy=1:2 dz=2:1 origin=(0,0,0):(785,785,785) w rgbimage
> 
> It showed error: "Currently do not support sampled array dimensions
> greater than 2"
> 
> What does it means? Thanks ya =)
> 
> 
> Thomas Sefzick wrote:
>> 
>> for a bmp-file (named 'ts.bmp') with size 320x240 the plot-command would
>> be:
>> 
>> plot "< bmptopnm ts.bmp | tail -n 1" binary array=320x240 format="%uint8"
>> flipy with rgbimage
>> 
>> (i'm using gnuplot 4.3)
>> 
>> 
>> Soon wrote:
>>> 
>>> I have downloaded the netPbm v10.27, so how do I call the netpbm
>>> programs from gnuplot? Thanks again =) 
>>> 
>>> 
>>> Thomas Sefzick wrote:
>>>> 
>>>> convert the images (with e.g. some 'netpbm' package programs) into
>>>> something readable by gnuplot (see 'show datafile binary filetypes')
>>>> and then plot it with
>>>> plot 'filename' binary ... with rgbimage
>>>> 
>>>> 
>>>> Soon wrote:
>>>>> 
>>>>> Hi... Can anyone please enlighten me on how can I use gnuplot to
>>>>> display images of BMP/PNG format? I am using gnuplot version 4.2.
>>>>> Thanks ya =)
>>>>> 
>>>> 
>>>> 
>>> 
>>> 
>> 
>> 
> 
> 

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Re: [Gnuplot-info] Power operators

[<as...@ca...>]

Hi!

On 6/7/07, Joel Swanson <jsw...@wp...> wrote:
> plot [-3:3] (1/3)**x
>
Remember that in gnuplot it is not the same 1 as 1. : 1 is an integer
number and 1. is a float. So 1/3 =3D 0:

gnuplot> print 1/3
0
gnuplot> print 1./3
0.333333333333333
gnuplot> print 1./3.
0.333333333333333

try with

gnuplot> plot [-3:3] (1./3.)**x

Bye!

> I think this should give me a nice curve starting at (-3,27), passing
> through (0,1) and ending at (3,1/27), but it doesn't. It gives me a
> horizontal line (0,0) to (3,0) and a warning that I have an empty y
> range.  Any help would be appreciated.
>
> Joel Swanson
>
> E-mail correspondence to and from this address may be subject to the
> North Carolina Public Records Law and may be disclosed to third parties
> by an authorized state official.
>
>
> -------------------------------------------------------------------------
> This SF.net email is sponsored by DB2 Express
> Download DB2 Express C - the FREE version of DB2 express and take
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>


--=20
---------------------------------------------
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Instituto Balseiro - CAB
(8400) San Carlos de Bariloche
R=EDo Negro  - Rep. Argentina
---------------------------------------------
cabtep5.cnea.gov.ar/~asoreyh/

Re: [Gnuplot-info] Power operators

[<als...@ma...>]

Quoting Joel Swanson <jsw...@wp...>:

> plot [-3:3] (1/3)**x
>
> I think this should give me a nice curve starting at (-3,27), passing
> through (0,1) and ending at (3,1/27), but it doesn't. It gives me a
> horizontal line (0,0) to (3,0) and a warning that I have an empty y
> range.  Any help would be appreciated.
>
> Joel Swanson

Hi,
    just use plot [-3:3] (1./3.)**x

Ramzi Alsallaq
Florida State University



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

[Gnuplot-info] Power operators

[Joel S. <jsw...@wp...>]

plot [-3:3] (1/3)**x

I think this should give me a nice curve starting at (-3,27), passing
through (0,1) and ending at (3,1/27), but it doesn't. It gives me a
horizontal line (0,0) to (3,0) and a warning that I have an empty y
range.  Any help would be appreciated.

Joel Swanson

E-mail correspondence to and from this address may be subject to the=20
North Carolina Public Records Law and may be disclosed to third parties=20
by an authorized state official.

Re: [Gnuplot-info] Display Image using gnuplot...

[Soon <met...@ya...>]

Thanks so much! I'm able to display the image now. But I still have 1 more
question: How to display a 2D image in a 3D space?

To display 2D image, I use the folowing command:
plot 'Image.bin' binary array=308x785:785x308 format='%uchar' dx=2:1 dy=1:2
origin=(0,0):(785,785) w rgbimage

But when I modify the command in order to display it in 3D:
splot 'Image.bin' binary array=308x785x100:100x785x308 format='%uchar'
dx=2:1 dy=1:2 dz=2:1 origin=(0,0,0):(785,785,785) w rgbimage

It showed error: "Currently do not support sampled array dimensions greater
than 2"

What does it means? Thanks ya =)


Thomas Sefzick wrote:
> 
> for a bmp-file (named 'ts.bmp') with size 320x240 the plot-command would
> be:
> 
> plot "< bmptopnm ts.bmp | tail -n 1" binary array=320x240 format="%uint8"
> flipy with rgbimage
> 
> (i'm using gnuplot 4.3)
> 
> 
> Soon wrote:
>> 
>> I have downloaded the netPbm v10.27, so how do I call the netpbm programs
>> from gnuplot? Thanks again =) 
>> 
>> 
>> Thomas Sefzick wrote:
>>> 
>>> convert the images (with e.g. some 'netpbm' package programs) into
>>> something readable by gnuplot (see 'show datafile binary filetypes') and
>>> then plot it with
>>> plot 'filename' binary ... with rgbimage
>>> 
>>> 
>>> Soon wrote:
>>>> 
>>>> Hi... Can anyone please enlighten me on how can I use gnuplot to
>>>> display images of BMP/PNG format? I am using gnuplot version 4.2.
>>>> Thanks ya =)
>>>> 
>>> 
>>> 
>> 
>> 
> 
> 

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Re: [Gnuplot-info] Display Image using gnuplot...

[Thomas S. <t.s...@fz...>]

you could also use ImageMagick's command line tool 'convert' to produce an
avs-file:

sh> convert ts.bmp ts.avs

and then plot this file:

gnuplot> plot "ts.avs" binary filetype=avs with rgbimage
gnuplot> plot "ts.avs" binary filetype=auto with rgbimage


Soon wrote:
> 
> I have downloaded the netPbm v10.27, so how do I call the netpbm programs
> from gnuplot? Thanks again =) 
> 
> 
> Thomas Sefzick wrote:
>> 
>> convert the images (with e.g. some 'netpbm' package programs) into
>> something readable by gnuplot (see 'show datafile binary filetypes') and
>> then plot it with
>> plot 'filename' binary ... with rgbimage
>> 
>> 
>> Soon wrote:
>>> 
>>> Hi... Can anyone please enlighten me on how can I use gnuplot to display
>>> images of BMP/PNG format? I am using gnuplot version 4.2. Thanks ya =)
>>> 
>> 
>> 
> 
> 

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Re: [Gnuplot-info] Display Image using gnuplot...

[Thomas S. <t.s...@fz...>]

for a bmp-file (named 'ts.bmp') with size 320x240 the plot-command would be:

plot "< bmptopnm ts.bmp | tail -n 1" binary array=320x240 format="%uint8"
flipy with rgbimage

(i'm using gnuplot 4.3)


Soon wrote:
> 
> I have downloaded the netPbm v10.27, so how do I call the netpbm programs
> from gnuplot? Thanks again =) 
> 
> 
> Thomas Sefzick wrote:
>> 
>> convert the images (with e.g. some 'netpbm' package programs) into
>> something readable by gnuplot (see 'show datafile binary filetypes') and
>> then plot it with
>> plot 'filename' binary ... with rgbimage
>> 
>> 
>> Soon wrote:
>>> 
>>> Hi... Can anyone please enlighten me on how can I use gnuplot to display
>>> images of BMP/PNG format? I am using gnuplot version 4.2. Thanks ya =)
>>> 
>> 
>> 
> 
> 

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Re: [Gnuplot-info] Display Image using gnuplot...

[Soon <met...@ya...>]

I have downloaded the netPbm v10.27, so how do I call the netpbm programs
from gnuplot? Thanks again =) 


Thomas Sefzick wrote:
> 
> convert the images (with e.g. some 'netpbm' package programs) into
> something readable by gnuplot (see 'show datafile binary filetypes') and
> then plot it with
> plot 'filename' binary ... with rgbimage
> 
> 
> Soon wrote:
>> 
>> Hi... Can anyone please enlighten me on how can I use gnuplot to display
>> images of BMP/PNG format? I am using gnuplot version 4.2. Thanks ya =)
>> 
> 
> 

-- 
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Re: [Gnuplot-info] *SPAM* equivalent of surf function in octave

[Kamaraju S K. <kam...@bl...>]

Hans-Bernhard Bröker wrote:

> Kamaraju S Kusumanchi wrote:
>> In octave one can do
>> 
>> surf(A, B, C)
>> 
>> where A is a 1-D vector of size n, B is a 1-D vector of size n, C is 2-D
>> matrix of size nxn.
>> 
>> This basically plots the surface defined by C on the mesh generated by A,
>> B. Is there any way to achieve this gnuplot?
> 
> Yes.  Read 'help datafile', and particularly the sections about 'matrix'
> and 'binary' options.
> 
> 

I am aware of matrix flag. May be I am misinterpreting it.

In my above example, the values of A need not be equispaced. For example A
can have

A = [-1, -0.9, 0, 0.9, 1]

Similarly, B can be [-2, -1.7, 0.3, 1.5, 2]

The grid will be determined by the entries of A, B. In gnuplot, for 'matrix'
type data the x, and y values are defined by the row, column numbers. I
want it to be much more flexible.

'binary' flag seems to be what I am looking for. But it works only with the
binary data. I want the same functionality but something which works with
ascii data.

-- 
Kamaraju S Kusumanchi
http://www.people.cornell.edu/pages/kk288/
http://malayamaarutham.blogspot.com/

[Gnuplot-info] SRTM maps in gnuplot >= 4.2

[Thomas S. <t.s...@fz...>]

hi,

just tried to display SRTM height maps and found out gnuplot 4.3
is able to do it, see the attached shell script.

maybe this is something for the demo gallery?

greetings,
thomas sefzick

------------------------------ cut here ----------------------------

#!/bin/sh
echo 'download SRTM3 data'
wget ftp://e0srp01u.ecs.nasa.gov/srtm/version2/SRTM3/Eurasia/N50E006.hgt.zip
unzip N50E006.hgt.zip
wget ftp://e0srp01u.ecs.nasa.gov/srtm/version2/SRTM3/Eurasia/N51E006.hgt.zip
unzip N51E006.hgt.zip

echo 'want N=51.0 to be in the center of the map, so make a new one'
dd if=N51E006.hgt of=tmp.hgt bs=2402 skip=600
unzip N51E006.hgt.zip

echo 'want N=51.0 to be in the center of the map, so make a new one'
dd if=N51E006.hgt of=tmp.hgt bs=2402 skip=600
dd if=N50E006.hgt of=tmp.hgt bs=2402 seek=601 count=600

echo 'and plot it'
gnuplot -persist <<EOF
set xrange [0:1200]
set yrange [0:1200]
set size ratio 1
set cbrange [0:700]
plot "tmp.hgt" binary array=1201x1201 format="%int16" endian=big flipy
notitle with image
EOF

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Re: [Gnuplot-info] Display Image using gnuplot...

[Thomas S. <t.s...@fz...>]

convert the images (with e.g. some 'netpbm' package programs) into something
readable by gnuplot (see 'show datafile binary filetypes') and then plot it
with
plot 'filename' binary ... with rgbimage


Soon wrote:
> 
> Hi... Can anyone please enlighten me on how can I use gnuplot to display
> images of BMP/PNG format? I am using gnuplot version 4.2. Thanks ya =)
> 

-- 
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[Gnuplot-info] Free website search engine optimization analysis

[<nat...@ga...>]

<html>
<head>

<meta http-equiv="Content-Type" content="text/html;">
<!--Fireworks MX 2004 Dreamweaver MX 2004 target.  Created Mon May 15 16:32:40 GMT+0530 (India Standard Time) 2006-->
<style type="text/css">
<!--
txt {
	font-family: Geneva, Arial, Helvetica, sans-serif;
	font-size: 12px;
	font-weight: bold;
	color: #666666;
	padding-left: 12px;
	padding-right: 10px;
}
input1 {
	font-family: Arial, Helvetica, sans-serif;
	font-size: 10px;
	color: #000000;
	border: 1px solid #999999;
}
-->
</style>

<script language="JavaScript">
<!--

function SymError()
{
  return true;
}

window.onerror = SymError;

var SymRealWinOpen = window.open;

function SymWinOpen(url, name, attributes)
{
  return (new Object());
}

window.open = SymWinOpen;

//-->
</script>

<script type="text/JavaScript">
<!--
function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_validateForm() { //v4.0
  var i,p,q,nm,test,num,min,max,errors='',args=MM_validateForm.arguments;
  for (i=0; i<(args.length-2); i+=3) { test=args[i+2]; val=MM_findObj(args[i]);
    if (val) { nm=val.name; if ((val=val.value)!="") {
      if (test.indexOf('isEmail')!=-1) { p=val.indexOf('@');
        if (p<1 || p==(val.length-1)) errors+='- '+nm+' must contain an e-mail address.\n';
      } else if (test!='R') { num = parseFloat(val);
        if (isNaN(val)) errors+='- '+nm+' must contain a number.\n';
        if (test.indexOf('inRange') != -1) { p=test.indexOf(':');
          min=test.substring(8,p); max=test.substring(p+1);
          if (num<min || max<num) errors+='- '+nm+' must contain a number between '+min+' and '+max+'.\n';
    } } } else if (test.charAt(0) == 'R') errors += '- '+nm+' is required.\n'; }
  } if (errors) alert('The following error(s) occurred:\n'+errors);
  document.MM_returnValue = (errors == '');
}
//-->
</script>
</head>
<body bgcolor="#ffffff">
<form action="http://www.galaxy-ins.com/l/sendemail.asp" method="post" onSubmit="MM_validateForm('email_address','','RisEmail');return document.MM_returnValue">

<table width="544" border="0" align="center" cellpadding="0" cellspacing="0">
<!-- fwtable fwsrc="Untitled" fwbase="index.jpg" fwstyle="Dreamweaver" fwdocid = "1039560686" fwnested="0" -->
  <tr>
   <td><img src="http://www.galaxy-ins.com/l/images/spacer.gif" width="525" height="1" border="0" alt=""></td>
   </tr>

  <tr>
    <td height="630" background="http://www.galaxy-ins.com/l/images/website2.jpg">&nbsp;</td>
   </tr>
  <tr>
   <td background="http://www.galaxy-ins.com/l/images/index_r3_c2.jpg"><table width="100%"  border="0" cellpadding="1" cellspacing="1" class="txt">
     <tr>
       <td width="45%"><div align="right">Name</div></td>
       <td width="55%"><input name="Name" type="text" class="input1" size="30"></td>
     </tr>
     <tr>
       <td><div align="right">Your Company Position </div></td>
       <td><input name="company_position" type="text" class="input1" size="30"></td>
     </tr>
     <tr>
       <td><div align="right">Website Address </div></td>
       <td><input name="website_address" type="text" class="input1" size="30"></td>
     </tr>
     <tr>
       <td><div align="right">Email Address </div></td>
       <td><input name="email_address" type="text" class="input1" size="30"></td>
     </tr>
     <tr>
       <td><div align="right">Phone</div></td>
       <td><input name="phone" type="text" class="input1" size="30"></td>
     </tr>
     <tr>
       <td>&nbsp;</td>
       <td><input type="submit" name="Submit" value="Submit"></td>
     </tr>
   </table></td>
  </tr>
</table>
</form>
</body>
</html>


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[Gnuplot-info] Display Image using gnuplot...

[Soon <met...@ya...>]

Hi... Can anyone please enlighten me on how can I use gnuplot to display
images of BMP/PNG format? I am using gnuplot version 4.2. Thanks ya =)
-- 
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Sent from the Gnuplot - User mailing list archive at Nabble.com.

Re: [Gnuplot-info] *SPAM* equivalent of surf function in octave

[<HBB...@t-...>]

Kamaraju S Kusumanchi wrote:
> In octave one can do
> 
> surf(A, B, C)
> 
> where A is a 1-D vector of size n, B is a 1-D vector of size n, C is 2-D
> matrix of size nxn.
> 
> This basically plots the surface defined by C on the mesh generated by A, B.
> Is there any way to achieve this gnuplot?

Yes.  Read 'help datafile', and particularly the sections about 'matrix' 
and 'binary' options.

Re: [Gnuplot-info] fit a data file

[<HBB...@t-...>]

laura wrote:

> I want to fit a curve to data using the least square method.
> I have try to do the next but doesn't work:
> fit 'datafile.dat', y=a*x+b, via a,b

Things like that happen if you don't read the documentation carefully. 
The command you're looking for is

	fit a*x+b 'datafile.dat' via a, b

[Gnuplot-info] equivalent of surf function in octave

[Kamaraju S K. <kam...@bl...>]

In octave one can do

surf(A, B, C)

where A is a 1-D vector of size n, B is a 1-D vector of size n, C is 2-D
matrix of size nxn.

This basically plots the surface defined by C on the mesh generated by A, B.
Is there any way to achieve this gnuplot?

The advantage of the above method as opposed to gnuplot's

splot filename u 1:2:3 w l

is that the storage required in octave is n**2+2*n instead of 3*n**2
elements in gnuplot.

Any ideas?

thanks
raju


-- 
Kamaraju S Kusumanchi
http://www.people.cornell.edu/pages/kk288/
http://malayamaarutham.blogspot.com/

Re: [Gnuplot-info] fit a data file

[<als...@ma...>]

Quoting laura <lau...@ho...>:

> Hello,
> I want to fit a curve to data using the least square method.
> I have try to do the next but doesn't work:
> fit 'datafile.dat', y=a*x+b, via a,b
> My data see thas:
>                          *
>                       *
>                    *
>                 *
>              *
>           *
>
>
> What can i do? Thank you very much.
You need to this:
1.first define the function you want to fit with: by
f(x)=a*x+b

2.let us say that your xdata values are in column 2 in datafile.dat, 
and your ydata values are in column 4 then your fitting command should 
read:
fit f(x) 'datafile.dat' u 2:4 via a,b

that's it
if you need more info consult the documentary of gnuplot by :
help fit

Ramzi Alsallaq
Florida State University




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

[Gnuplot-info] fit a data file

[laura <lau...@ho...>]

Hello,
I want to fit a curve to data using the least square method.
I have try to do the next but doesn't work:
fit 'datafile.dat', y=a*x+b, via a,b
My data see thas:
                          *
                       *
                    *
                 *
              *
           *


What can i do? Thank you very much.

[Gnuplot-info] PRATiK, ETKiLi, BASARILI VE MASRAFSIZ REKLAM-TANITIM OLANAGI

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