gnuplot-info — For questions and discussion about gnuplot

Re: [Gnuplot-info] gnuplot won't plot

[rprugue <rod...@gm...>]

Hey John,

Are you saying reinstall gnuplot AND X11? I'm pretty sure X11 came
preinstalled? And this might sound but how would I uninstall it?


Also, gnuplot works when I run it from the X11 window which I guess is a
good sign?


Thanks again for responding!



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Re: [Gnuplot-info] gnuplot won't plot

[BBands <bb...@gm...>]

You might try reinstalling gnuplot-X11.

    John

On Tue, Jul 30, 2013 at 9:19 AM, rprugue <rod...@gm...> wrote:
> It doesn't recognize wxt?

Re: [Gnuplot-info] gnuplot won't plot

[rprugue <rod...@gm...>]

It doesn't recognize wxt?



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Re: [Gnuplot-info] gnuplot won't plot

[BBands <bb...@gm...>]

As a work around you could try the wxt terminal.

set term wxt
test

John -- both X11 and wxt terminals work fine here (ubuntu 13.04)

On Tue, Jul 30, 2013 at 9:01 AM, rprugue <rod...@gm...> wrote:
> I'm having the same issue!!! What do I do??

Re: [Gnuplot-info] gnuplot won't plot

[rprugue <rod...@gm...>]

I'm having the same issue!!! What do I do??



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[Gnuplot-info] plotting sparse 4D data

[Ben E. <bj...@ai...>]

(Sorry for re-post, not sure if this got to the list or not.)

I want to use splot to plot some 4D data (x,y,z,temp) uisng the pm3d
style:

   set dgrid3d 10, 10, 10
   set pm3d
   splot 'foo.data' notitle with pm3d

I used dgrid3d to try and construct a gridded data set, but it didn't
work.  I got:

  "foo.gnuplot", line 5: Gridding of the color column is not implemented

What other options are there for doing this?  I would really like to
do it all inside gnuplot and not have to do manual processing of the
data file.

Thanks,
Ben

Re: [Gnuplot-info] Rescaling a Dataset

[thse <t.s...@fz...>]

assuming that the 1st line is not to be plotted:

set f 1.0
plot "./datfile" using ($0==0?f=$4:$1/f):($0==0?0/0:$4)

when reading in the 1st line set f to length3 and plot nothing,
afterwards  plot normally.



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[Gnuplot-info] Rescaling a Dataset

[benni <cm...@we...>]

Hey guys,
I am searching for the best way to save a dataset produced by my simulation
program.
My problem is that I want to plot a "rescaled density profile". The Dataset
looks like the following:
all strings are replaced by the simulation values.

0          length       length2      length3
x1     rho(t1,x1)    rho(t2,x1)   rho(t3,x1)
x2     rho(t1,x2)    rho(t2,x2)   rho(t3,x2)
x3     rho(t1,x3)    rho(t2,x3)   rho(t3,x3)
x4     rho(t1, x4)   rho(t1,x4)    rho(t2,x4)
...

I can plot the unscaled density profile at time 3 by plotting ' plot
"./datfile" u 1:4'

But now i want to rescale my x-axis to 0-1. That means I want to ' plot
"./datfile" u ($1/length3) : 4'
Do one of you have any idea how to do it?
As alternative I have the length written in a second file looking like the
following:

# time       length       number ....
t1              lengh1
t2              length2
t3              length3


But I have no idea how to access it. If you have an idea how to solve it,
or how i could arrange the datas differently to solve my problem, I would
be very happy about your answer.

Thank you very much benni

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[Gnuplot-info] plotting sparse 4D data

[Ben E. <bj...@ai...>]

Hi.

I want to use splot to plot some 4D data (x,y,z,temp) uisng the pm3d
style:

   set dgrid3d 10, 10, 10
   set pm3d
   splot 'foo.data' notitle with pm3d

I used dgrid3d to try and construct a gridded data set, but it didn't
work.  I got:

  "foo.gnuplot", line 5: Gridding of the color column is not implemented

What other options are there for doing this?  I would really like to
do it all inside gnuplot and not have to do manual processing of the
data file.

Thanks,
Ben

Re: [Gnuplot-info] Color in a histogram

[ColorIsSweet <aik...@gm...>]

Ethan,
Thanks for the magic.  It was great.
David



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[Gnuplot-info] Automated script to plot a variable number of data points

[thinkle <th...@uc...>]

I've dug around for a solution to this problem in the FAQ and elsewhere with
no luck. I'm still relatively new to gnuplot so it's very possible I have
missed something. Thank you in advance for your attention. Here's the issue:

I am trying to write a .gpl file that will automatically grab the correct
data points from a data set I've produced, for a variable number of data
points. More specifically, I am creating gif images of vector field plots on
a 2-d lattice that can vary in size, e.g., 32x32 or 64x64 lattices. I'd like
to be able to automate the process so that I do not have to alter the .gpl
every time I change my program parameters. I need the automation to do two
things: deal with changing lattice sizes and produce .gif's with varying
numbers of frames.

Here is an example of what I have at the moment:

set title "t=1"
plot "<(sed -n '2,101p' vecgif)" using 1:2:3:4 with vectors filled head lt
rgb "black"
set title "t=2"
plot "<(sed -n '104,203p' vecgif)" using 1:2:3:4 with vectors filled head lt
rgb "black"

The above is a snippet from my current .gpl script that produces a .gif
animation of a 10x10 lattice at two different times. The problem is that if
I want to change the lattice size I will have to change the row numbers in
both lines, and if I want say 3 frames instead of 2, I have to manually add
in another command. I would like to avoid having to do this, if possible!

Thanks again.



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Re: [Gnuplot-info] Plotting Line Chart with yerrorbars

[Hans-Bernhard B. <HBB...@t-...>]

On 17.07.2013 11:29, Saravanan Kandasamy wrote:

> But the problem I have is the data and yerror information resides in two
> different files.

So don't do that, then.  Why on earth would your y errors not be in the 
same file as the y data themselves?  After all, they were acquired at 
the same time, weren't they?

> Is there any way data and yerror information residing in two different
> files be olotted at the same chart?

None short of moving them into the same file, like they should have been 
from the get-go.  If you really have to, you can use tools like the Unix 
"paste" utility to do it on the fly, while keeping the original data in 
their separate places:

   plot "< paste file_data.dat file_yerror.dat" u 1:2:4 w yerrorlines

[Gnuplot-info] Plotting Line Chart with yerrorbars

[Saravanan K. <sva...@gm...>]

Dear All,

I am a beginner in gnuplot and trying to plot a line chart with yerrorbars.

The below syntax works fine,

*plot \*
*"file.dat" using 1:2 ti "Line1" with linespoints pt 1 lt 1 ps 1.2, \*
*"file.dat" using 1:2:3 ti "" with yerrorbars lt rgb "red" pt 6 ps 0.2*

But the problem I have is the data and yerror information resides in two
different files. Tried doing the below,

*plot \*
*"file_data.dat" using 1:2 ti "Line1" with linespoints pt 1 lt 1 ps 1.2, \*
*"file_yerror.dat" using 1:2 ti "" with yerrorbars lt rgb "red" pt 6 ps 0.2*

but it is not correct and returning,
*"test.pg", line 21: Not enough columns for this style*
*
*
This is because 1:2 from file_yerror.dat though it can retrieve the yerror
value, it has no information where to place this on the plot (i.e at 1:2
from file_data.dat).

Is there any way data and yerror information residing in two different
files be olotted at the same chart?

Thank you very much.

rgds
Saravanan K

Re: [Gnuplot-info] export with costum DPI

[Sebastien K. <seb...@ya...>]

On 06/29/2013 05:07 PM, Mahmood Naderan wrote:
> Hi Is it possible to print/export a chart to a file with a given resolution or
> dpi? If the answer is positive, how can I do that?

With a given resolution: (with pngcairo, but similar with other terminals)
set terminal pngcairo size 640,480

With a given dpi, you'll have to use additional tool (imagemagick for example).

Re: [Gnuplot-info] splitting axis to some section (!?)

[Mahmood N. <nt_...@ya...>]

Thanks a lot. In fact one of my problems was "what is the right keyword for that description"!

 
Regards,
Mahmood



________________________________
 From: BBands <bb...@gm...>
To: Mahmood Naderan <nt_...@ya...> 
Cc: "gnu...@li..." <gnu...@li...> 
Sent: Wednesday, July 17, 2013 12:21 AM
Subject: Re: [Gnuplot-info] splitting axis to some section (!?)
 

Google can be your friend...

http://gnuplot-tricks.blogspot.com/2009/06/broken-axis-revisited.html

    John

On Tue, Jul 16, 2013 at 10:40 AM, Mahmood Naderan <nt_...@ya...> wrote:
> Hi
> Is it possible to have multiple xrange by splitting it to some sections? Assume the values on the x-axis looks like
>
> 0 1 2 ... 10 90 ... 100 600 ... 640
>
> If I use "set xrange [0:640], then there are two gaps and the y-axis value for 0...10 are squeezed. In short I want to remove the following ranges from the plot
>
> 11 .. 89
> 101 ... 599
>
> One possible solution is logarithmic scale but I need to represent the data values on a linear axis.
> Hope that I explain the problem correctly.

Re: [Gnuplot-info] splitting axis to some section (!?)

[BBands <bb...@gm...>]

Google can be your friend...

http://gnuplot-tricks.blogspot.com/2009/06/broken-axis-revisited.html

    John

On Tue, Jul 16, 2013 at 10:40 AM, Mahmood Naderan <nt_...@ya...> wrote:
> Hi
> Is it possible to have multiple xrange by splitting it to some sections? Assume the values on the x-axis looks like
>
> 0 1 2 ... 10 90 ... 100 600 ... 640
>
> If I use "set xrange [0:640], then there are two gaps and the y-axis value for 0...10 are squeezed. In short I want to remove the following ranges from the plot
>
> 11 .. 89
> 101 ... 599
>
> One possible solution is logarithmic scale but I need to represent the data values on a linear axis.
> Hope that I explain the problem correctly.

[Gnuplot-info] splitting axis to some section (!?)

[Mahmood N. <nt_...@ya...>]

Hi
Is it possible to have multiple xrange by splitting it to some sections? Assume the values on the x-axis looks like

0 1 2 ... 10 90 ... 100 600 ... 640

If I use "set xrange [0:640], then there are two gaps and the y-axis value for 0...10 are squeezed. In short I want to remove the following ranges from the plot

11 .. 89
101 ... 599

One possible solution is logarithmic scale but I need to represent the data values on a linear axis.
Hope that I explain the problem correctly.

 
Regards,
Mahmood

Re: [Gnuplot-info] random numbers test

[<dg...@us...>]

Thank you, I successfully got it to install.
Now I looked at 'help plot datafile' in the help menu, but I can't figure
out how to go about plotting... is there like a tutorial somewhere for
complete beginners to coding?


On Mon, Jul 15, 2013 at 3:25 PM, Hans-Bernhard Bröker <HBB...@t-...
> wrote:

> On 15.07.2013 20:46, dg...@us... wrote:
>
>> I downloaded the 'gnuplot-4.6.3.tar' file off sourceforge, and unzipped
>> it,
>> but what do I select in the folder? I don't see any .exe file...
>>
>
> That's because there is none in that archive.  And the reason for that is
> that you picked the wrong (for your needs) file from the download site.
> You want the Windows binary installer, gp463-win32-setup.exe.
>
>

Re: [Gnuplot-info] random numbers test

[Hans-Bernhard B. <HBB...@t-...>]

On 15.07.2013 20:46, dg...@us... wrote:
> I downloaded the 'gnuplot-4.6.3.tar' file off sourceforge, and unzipped it,
> but what do I select in the folder? I don't see any .exe file...

That's because there is none in that archive.  And the reason for that 
is that you picked the wrong (for your needs) file from the download 
site.   You want the Windows binary installer, gp463-win32-setup.exe.

Re: [Gnuplot-info] random numbers test

[<dg...@us...>]

Thank you. I will try to plot them.
I'm sorry this probably sounds stupid, but could someone please tell me how
I can start gnuplot? :/
I downloaded the 'gnuplot-4.6.3.tar' file off sourceforge, and unzipped it,
but what do I select in the folder? I don't see any .exe file...


On Mon, Jul 15, 2013 at 11:38 AM, BBands <bb...@gm...> wrote:

> if you have the values -- I assume they are in a file -- why not just
> plot them? See 'help plot datafile', which also includes help for
> inline data.
>
> John
>
> On Sat, Jul 13, 2013 at 11:12 PM, dg...@us...
> <dg...@us...> wrote:
> > Hi! Thank you for your reply the other day! I realize that 'rand()' is a
> > function to generate random numbers, right?
> > I'm sorry, that's not what I meant. I wanted to know if I can use only
> > numbers (=already generated values, not generated with gnuplot) to
> perform
> > any of the tests listed at 'random demo script.'
>

Re: [Gnuplot-info] random numbers test

[BBands <bb...@gm...>]

if you have the values -- I assume they are in a file -- why not just
plot them? See 'help plot datafile', which also includes help for
inline data.

John

On Sat, Jul 13, 2013 at 11:12 PM, dg...@us...
<dg...@us...> wrote:
> Hi! Thank you for your reply the other day! I realize that 'rand()' is a
> function to generate random numbers, right?
> I'm sorry, that's not what I meant. I wanted to know if I can use only
> numbers (=already generated values, not generated with gnuplot) to perform
> any of the tests listed at 'random demo script.'

Re: [Gnuplot-info] random numbers test

[<dg...@us...>]

Hi! Thank you for your reply the other day! I realize that 'rand()' is a
function to generate random numbers, right?
I'm sorry, that's not what I meant. I wanted to know if I can use only
numbers (=already generated values, not generated with gnuplot) to perform
any of the tests listed at 'random demo
script.'<http://gnuplot.sourceforge.net/demo/random.html>


On Mon, Jul 1, 2013 at 6:13 PM, BBands <bb...@gm...> wrote:

> gunplot explains its implementation of random numbers in 'help
> random'. As far as I know, nothing external in needed. The function
> call is rand().
>
>     John
>

Re: [Gnuplot-info] point size in different terms looks different

[BBands <bb...@gm...>]

Each terminal has its own properties and exhibits its own behavior.
Depending on the implementation, there may be some situations in which
the results are quite different.

    jab

On Sat, Jul 13, 2013 at 10:54 AM, Mahmood Naderan <nt_...@ya...> wrote:

> However the point size is similar to "ps 3" in x11. Is that normal? It is quite tick in my chart.

[Gnuplot-info] point size in different terms looks different

[Mahmood N. <nt_...@ya...>]

Hi
In the manual it is stated 


enhanced enables enhanced text mode features (subscripts, superscripts and mixed fonts). See enhanced (p. [*]) for more information. blacktext forces all text to be written in black even in color mode; 


However in the postscript terminal, I see that the points sizes are much ticker than x11. I use

set term post eps enhanced color blacktext size 3.1,2.2 solid "Times-Roman" 12

plot "delta" u 6 every ::2::80000 title "data" with points pt 7 ps 0.7

However the point size is similar to "ps 3" in x11. Is that normal? It is quite tick in my chart.

 
Regards,
Mahmood

Re: [Gnuplot-info] Color in a histogram

[Ethan A M. <eam...@gm...>]

On Friday, 12 July 2013, ColorIsSweet wrote:
> I'm making a bar histogram and I would like to draw each bar in a different
> color.  Here's my data:
> 
> Silver/Gray                        1886923       29.963891005749588
> White                              1265143       20.090171649127733
> Black                              1258397       19.983046764474366
> Red                                 712602       11.315951238327779
> Blue                                565317       8.9771002694319471
> Brown/Beige                         203033       3.2241160251745069
> Yellow/Gold                         186990       2.9693569791481238
> Green                               171534       2.7239193543034079
> Other                                47384       0.7524467142625525
> 
> And here's my script 
> 
> set title "Histogram of machine color"
> set grid 
> set yrange [0:35]
> set xrange [-.5:*]
> set style data histograms 
> set style fill solid 
> set xtics border in scale 0,10  nomirror rotate by -45  
> plot "percent.out" using 3:xticlabels(1) notitle 
> 
> I know there's some magic in the universe somewhere that will let me color
> the histogram bars as gray, white, black, red, etc..  But what that magic
> is, is beyond me.  Thanks in advance!

Here is a magic script, written in the idiom of gnuplot 4.7 so that the
data is in-line.  You can trivially replace $DATA with the name of a data file.

$DATA << EOD
Gray           1886923       29.963891005749588
White          1265143       20.090171649127733
Black          1258397       19.983046764474366
Red             712602       11.315951238327779
Blue            565317       8.9771002694319471
Brown           203033       3.2241160251745069
Yellow          186990       2.9693569791481238
Green           171534       2.7239193543034079
Other            47384       0.7524467142625525
EOD

set style fill solid border -1
boxwidth = 0.5

color(name) = (name eq "Gray") ? 0xdddddd \
            : (name eq "White") ? 0xffffff \
	    : (name eq "Black") ? 0x000000 \
	    : (name eq "Red")  ?  0xff0000 \
	    : (name eq "Blue") ?  0x0000ff \
	    : (name eq "Green") ? 0x00ff00 \
	    : (name eq "Yellow") ? 0xffff00 \
	    : int(rand(0)*0xffffff)

plot $DATA using 0:3:(boxwidth):(color(strcol(1))):xtic(1) \
        with boxes fillcolor rgb variable


		Ethan

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