gnuplot-info — For questions and discussion about gnuplot

Re: [Gnuplot-info] fix palette

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

define cbrange


karaj wrote:
> 
> Hi,
> 
> I try to define a fixed palette for a map view, but Gnuplot alway sets the
> color assigned to the maximal value in the definition to the actual
> maximum value in the data. For example I type:
> set palette defined (0 "black" ,  3 "yellow")
> but if the data is in [1,2], points with value 2 will be yellow and the
> side bar will be also ranged [0:2], no matter if I defined zrange before.
> 
> Please tell me how to suppress this behavior.
> 
> Thanks.
> 

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[Gnuplot-info] Warning message

[<she...@be...>]

Hi Gnuploteers

When I run a gnuplot script (see below) that takes data from a file as
input (see below) I am getting the following warning message:

  line 26: warning: matrix contains missing or undefined values

Could you please tell me why I am getting this warning?

Thanks again!

Here is my script:


reset
unset key
unset colorbox
unset border
unset xtics
unset ytics
unset ztics
set palette gray

set multiplot
set size .25,1
set origin 0,0
set xrange [0:5]
set yrange [0:25]
plot 'test_2.dat' index 0 using 1:2:3 with labels left

set autoscale
set size square 1
set origin .10, 0
plot 'test_2.dat' index 1 matrix with image

unset multiplot


Here is an example data file:

0 23 "slice 1"
0 22 "volume 12"


0 2 4 4 5
5 4 4 2 1
5 4 4 4 5
1 2 4 2 1
0 2 4 6 4


1 23 "slice 10"
1 22 "volume 22"


0 2 4 4 5
5 4 4 2 1
5 4 4 4 5
1 2 4 2 1
0 2 4 6 4

Re: [Gnuplot-info] Starting a gnuplot script clean

[<she...@be...>]

Reset. Thanks Hans. That fixed it.


> she...@be... wrote:
>
>> How can I start a gnuplot script so that it puts all variables and the
>> terminal into a known state?
>
> You don't have to do anything to achieve that effect.  Really.  At the
> start of a gnuplot session all variables and settings _are_ in a known
> state.
>
>> I am having trouble with getting different
>> plot appearances the first time I run a script versus subsequent runs
>> of the same script.
>
> That's not a problem with the initial state of gnuplot, but rather with
> the state your script leaves gnuplot in.  Those changes will affect
> gnuplot if you re-load the same script again.  If you don't want that,
> put a 'reset' command at the start of your script, and set variables to
> the values you want them to have, at the start of the script.
>
>

[Gnuplot-info] fix palette

[karaj <hag...@gm...>]

Hi,

I try to define a fixed palette for a map view, but Gnuplot alway sets the
color assigned to the maximal value in the definition to the actual maximum
value in the data. For example I type:
set palette defined (0 "black" ,  3 "yellow")
but if the data is in [1,2], points with value 2 will be yellow and the side
bar will be also ranged [0:2], no matter if I defined zrange before.

Please tell me how to suppress this behavior.

Thanks.
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Re: [Gnuplot-info] Quit gnuplot when plot window is closed

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

nas...@la... wrote:
> I am using gnuplot to display measurment data directly out of my
> self-written console-program. So far this works great but the problem is,
> that after gnuplot was called by my program, and the terminal with the
> plot is shown (wxt), the user has to type "quit" in console to exit
> gnuplot and return to my program. My question now is, if it is possible to
> automatically quit gnuplot when the terminal window is closed by the user.

You appear to be searching for the --persist option.

Re: [Gnuplot-info] Starting a gnuplot script clean

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

she...@be... wrote:

> How can I start a gnuplot script so that it puts all variables and the
> terminal into a known state? 

You don't have to do anything to achieve that effect.  Really.  At the 
start of a gnuplot session all variables and settings _are_ in a known 
state.

> I am having trouble with getting different
> plot appearances the first time I run a script versus subsequent runs
> of the same script.

That's not a problem with the initial state of gnuplot, but rather with 
the state your script leaves gnuplot in.  Those changes will affect 
gnuplot if you re-load the same script again.  If you don't want that, 
put a 'reset' command at the start of your script, and set variables to 
the values you want them to have, at the start of the script.

[Gnuplot-info] Starting a gnuplot script clean

[<she...@be...>]

Hi Gnuploteers

How can I start a gnuplot script so that it puts all variables and the
terminal into a known state? I am having trouble with getting different
plot appearances the first time I run a script versus subsequent runs
of the same script.

Thanks again!

Re: [Gnuplot-info] re ading file data into variables

[<she...@be...>]

Great! Thank you.


>
> it would be best, if you could insert 2 blank lines between
> two matrices, e.g.:
>
> datafile.dat:
> 19  27
>
>  22  43   67   70
>  12  76   19   102
>  43  78   93   23
>  67   9   28   56
>
>
> 17  24
>
>  12  33   47   50
>  22  46   39   42
>  33  58   23   33
>  47  19   18   26
>
> then you would do the dummy plot to set the variables:
>
> set term push
> set term dumb
> plot 'datafile.dat' index 0 every ::0::0 using (a1=$1, a2=$2, 0/0):(0/0),
> \
> '' index 1 every ::0::0 using (b1=$1, b2=$2, 0/0):(0/0)
> set term pop
> show variables
> # and now the matrix plots
> splot 'datafile.dat' matrix index 1 with linespoints, '' matrix index 3
> with
> linespoints
>
> note that the 'index' numbering is different for normal and for matrix
> plots.
> to avoid this you could insert double blank lines between the numbers for
> reading into the variables and the matrices too.
>
>
> SHELTRAW, DANIEL wrote:
>>
>> Hi Thomas
>>
>> A file would look something like this
>>
>>  19  27
>>
>>  22  43   67   70
>>  12  76   19   102
>>  43  78   93   23
>>  67   9   28   56
>>
>> Actually this pattern of two numbers on a line followed by a matrix of
>> data would repeat throughout a larger file. What I need is to plot the
>> matrix of data as a 2D image and label that image according to the two
>> numbers contained on the line that precedes the matrix data. However I
>> could change the format if it would help me achieve this.
>>
>> Thanks again for your help.
>>
>>
>>>
>>> do a dummy plot to read the data in and assign the values to
>>> the variables inside the 'using' option.
>>>
>>> for more details please post information about how your data
>>> file looks like.
>>>
>>>
>>> SHELTRAW, DANIEL wrote:
>>>>
>>>> Hi Gnuploteers
>>>>
>>>> I would like to be able to read a set of numbers contained at the
>>>> beginning
>>>> of a file and store the values in variables used in a GnuPlot script.
>>>> Can
>>>> this be done? If yes then how?
>>>>
>>>> Thanks again!
>>>>
>>>>
>>>> ------------------------------------------------------------------------------
>>>>
>>>> _______________________________________________
>>>> gnuplot-info mailing list
>>>> gnu...@li...
>>>> https://lists.sourceforge.net/lists/listinfo/gnuplot-info
>>>>
>>>>
>>>
>>> --
>>> View this message in context:
>>> http://old.nabble.com/reading-file-data-into-variables-tp28614622p28620101.html
>>> Sent from the Gnuplot - User mailing list archive at Nabble.com.
>>>
>>>
>>> ------------------------------------------------------------------------------
>>>
>>> _______________________________________________
>>> gnuplot-info mailing list
>>> gnu...@li...
>>> https://lists.sourceforge.net/lists/listinfo/gnuplot-info
>>>
>>
>>
>>
>> ------------------------------------------------------------------------------
>>
>> _______________________________________________
>> gnuplot-info mailing list
>> gnu...@li...
>> https://lists.sourceforge.net/lists/listinfo/gnuplot-info
>>
>>
>
> --
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> http://old.nabble.com/reading-file-data-into-variables-tp28614622p28634613.html
> Sent from the Gnuplot - User mailing list archive at Nabble.com.
>
>
> ------------------------------------------------------------------------------
>
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>

[Gnuplot-info] set multiplot layout, 2d and 3d plots, different sizes

[Matthias W. <mat...@gm...>]

Dear users,

I am an experienced gnuplot user, but I'm getting crazy with the following
problem:

I am using gnuplot 4.2

what i try to do is: make a multiplot with two columns.
The left column gets 2d plots and right column should display pm3d - maps ..

That works in principle, but the pm3d maps have a smaller size than the 2d
plots ... it seems that the labels and tics have a higher distance to the
axis than in the 2d plot.

I simply dont get them arranged... Do you have any idea?

Best regards,
Matthias

Re: [Gnuplot-info] incrementing a counter

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

'bind'ing some events to actions would be highly terminal
dependent.

another solution would be to use a software package containing
all those interactive features (e.g. tcltk, perltk). the main program
would the be written in tcltk or perl and it would call gnuplot just
to generate the plot as a tk-canvas.


SHELTRAW, DANIEL wrote:
> 
> Thanks Thomas
> 
> Can I increment the counter when a key press (eg. the up arrow key) is
> pressed by using the bind command? If so can you show me how?
> 
> Thanks again
> 
>>
>> initialize:
>> a=1
>>
>> increment:
>> a=a+1
>>
>>
>> SHELTRAW, DANIEL wrote:
>>>
>>> Hi Gnuplot users
>>>
>>> Could someone please tell me how one can initialize and increment a
>>> variable within a GnuPlot script.
>>>
>>> Thank you
>>>
>>>
>>> ------------------------------------------------------------------------------
>>>
>>> _______________________________________________
>>> gnuplot-info mailing list
>>> gnu...@li...
>>> https://lists.sourceforge.net/lists/listinfo/gnuplot-info
>>>
>>>
>>
>> --
>> View this message in context:
>> http://old.nabble.com/incrementing-a-counter-tp28601689p28605906.html
>> Sent from the Gnuplot - User mailing list archive at Nabble.com.
>>
>>
>> ------------------------------------------------------------------------------
>>
>> _______________________________________________
>> gnuplot-info mailing list
>> gnu...@li...
>> https://lists.sourceforge.net/lists/listinfo/gnuplot-info
>>
> 
> 
> 
> ------------------------------------------------------------------------------
> 
> _______________________________________________
> gnuplot-info mailing list
> gnu...@li...
> https://lists.sourceforge.net/lists/listinfo/gnuplot-info
> 
> 

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Re: [Gnuplot-info] re ading file data into variables

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

it would be best, if you could insert 2 blank lines between
two matrices, e.g.:

datafile.dat:
19  27

 22  43   67   70
 12  76   19   102
 43  78   93   23
 67   9   28   56


17  24

 12  33   47   50
 22  46   39   42
 33  58   23   33
 47  19   18   26

then you would do the dummy plot to set the variables:

set term push
set term dumb
plot 'datafile.dat' index 0 every ::0::0 using (a1=$1, a2=$2, 0/0):(0/0), \
'' index 1 every ::0::0 using (b1=$1, b2=$2, 0/0):(0/0)
set term pop
show variables
# and now the matrix plots
splot 'datafile.dat' matrix index 1 with linespoints, '' matrix index 3 with
linespoints

note that the 'index' numbering is different for normal and for matrix
plots.
to avoid this you could insert double blank lines between the numbers for
reading into the variables and the matrices too.


SHELTRAW, DANIEL wrote:
> 
> Hi Thomas
> 
> A file would look something like this
> 
>  19  27
> 
>  22  43   67   70
>  12  76   19   102
>  43  78   93   23
>  67   9   28   56
> 
> Actually this pattern of two numbers on a line followed by a matrix of
> data would repeat throughout a larger file. What I need is to plot the
> matrix of data as a 2D image and label that image according to the two
> numbers contained on the line that precedes the matrix data. However I
> could change the format if it would help me achieve this.
> 
> Thanks again for your help.
> 
> 
>>
>> do a dummy plot to read the data in and assign the values to
>> the variables inside the 'using' option.
>>
>> for more details please post information about how your data
>> file looks like.
>>
>>
>> SHELTRAW, DANIEL wrote:
>>>
>>> Hi Gnuploteers
>>>
>>> I would like to be able to read a set of numbers contained at the
>>> beginning
>>> of a file and store the values in variables used in a GnuPlot script.
>>> Can
>>> this be done? If yes then how?
>>>
>>> Thanks again!
>>>
>>>
>>> ------------------------------------------------------------------------------
>>>
>>> _______________________________________________
>>> gnuplot-info mailing list
>>> gnu...@li...
>>> https://lists.sourceforge.net/lists/listinfo/gnuplot-info
>>>
>>>
>>
>> --
>> View this message in context:
>> http://old.nabble.com/reading-file-data-into-variables-tp28614622p28620101.html
>> Sent from the Gnuplot - User mailing list archive at Nabble.com.
>>
>>
>> ------------------------------------------------------------------------------
>>
>> _______________________________________________
>> gnuplot-info mailing list
>> gnu...@li...
>> https://lists.sourceforge.net/lists/listinfo/gnuplot-info
>>
> 
> 
> 
> ------------------------------------------------------------------------------
> 
> _______________________________________________
> gnuplot-info mailing list
> gnu...@li...
> https://lists.sourceforge.net/lists/listinfo/gnuplot-info
> 
> 

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[Gnuplot-info] Quit gnuplot when plot window is closed

[<nas...@la...>]

Hello,

I am using gnuplot to display measurment data directly out of my
self-written console-program. So far this works great but the problem is,
that after gnuplot was called by my program, and the terminal with the
plot is shown (wxt), the user has to type "quit" in console to exit
gnuplot and return to my program. My question now is, if it is possible to
automatically quit gnuplot when the terminal window is closed by the user.

Thx 4 help & GreetZ,
Dirk

[Gnuplot-info] Quit gnuplot when plot window is closed

[<nas...@la...>]

Hello,

I am using gnuplot to display measurment data directly out of my
self-written console-program. So far this works great but the problem is,
that after gnuplot was called by my program, and the terminal with the
plot is shown (wxt), the user has to type "quit" in console to exit
gnuplot and return to my program. My question now is, if it is possible to
automatically quit gnuplot when the terminal window is closed by the user.

Thx 4 help & GreetZ

Re: [Gnuplot-info] re ading file data into variables

[<she...@be...>]

Hi Thomas

A file would look something like this

 19  27

 22  43   67   70
 12  76   19   102
 43  78   93   23
 67   9   28   56

Actually this pattern of two numbers on a line followed by a matrix of
data would repeat throughout a larger file. What I need is to plot the
matrix of data as a 2D image and label that image according to the two
numbers contained on the line that precedes the matrix data. However I
could change the format if it would help me achieve this.

Thanks again for your help.


>
> do a dummy plot to read the data in and assign the values to
> the variables inside the 'using' option.
>
> for more details please post information about how your data
> file looks like.
>
>
> SHELTRAW, DANIEL wrote:
>>
>> Hi Gnuploteers
>>
>> I would like to be able to read a set of numbers contained at the
>> beginning
>> of a file and store the values in variables used in a GnuPlot script.
>> Can
>> this be done? If yes then how?
>>
>> Thanks again!
>>
>>
>> ------------------------------------------------------------------------------
>>
>> _______________________________________________
>> gnuplot-info mailing list
>> gnu...@li...
>> https://lists.sourceforge.net/lists/listinfo/gnuplot-info
>>
>>
>
> --
> View this message in context:
> http://old.nabble.com/reading-file-data-into-variables-tp28614622p28620101.html
> Sent from the Gnuplot - User mailing list archive at Nabble.com.
>
>
> ------------------------------------------------------------------------------
>
> _______________________________________________
> gnuplot-info mailing list
> gnu...@li...
> https://lists.sourceforge.net/lists/listinfo/gnuplot-info
>

Re: [Gnuplot-info] re ading file data into variables

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

do a dummy plot to read the data in and assign the values to
the variables inside the 'using' option.

for more details please post information about how your data
file looks like.


SHELTRAW, DANIEL wrote:
> 
> Hi Gnuploteers
> 
> I would like to be able to read a set of numbers contained at the
> beginning
> of a file and store the values in variables used in a GnuPlot script. Can
> this be done? If yes then how?
> 
> Thanks again!
> 
> 
> ------------------------------------------------------------------------------
> 
> _______________________________________________
> gnuplot-info mailing list
> gnu...@li...
> https://lists.sourceforge.net/lists/listinfo/gnuplot-info
> 
> 

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Re: [Gnuplot-info] passing an argument to gnuplot script

[Tatsuro M. <tma...@ya...>]

This is a forwarded message that I have forgotten to cc. to gnu...@li....

--- Tatsuro MATSUOKA wrote:

> Hello
> 
> Use 'call' command.
> 
> Run 'help call' on the gnuplot and see how to use call command.
> 
> Regards
> 
> Tatsuro
> 
> 
> --- she...@be... wrote:
> 
> > Hi Gnuplotters
> > 
> > I have a gnuplot script to which I would like to pass an numerical argument.
> > How might I do this?
> > 
> > Thank you
> > 
> > 
> > 
> > ------------------------------------------------------------------------------
> > 
> > _______________________________________________
> > gnuplot-info mailing list
> > gnu...@li...
> > https://lists.sourceforge.net/lists/listinfo/gnuplot-info
> > 
> 
> 
> --------------------------------------
> 2010 FIFA World Cup News [Yahoo!Sports/sportsnavi]
> http://pr.mail.yahoo.co.jp/southafrica2010/
> 


--------------------------------------
2010 FIFA World Cup News [Yahoo!Sports/sportsnavi]
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[Gnuplot-info] Use of using with matrix

[<she...@be...>]

Hello Gnuploteers

I am using gnuplot to plot some image data as follows

   plot 'k_space.dat' index i matrix with image

the index i chooses which 2D image data set to use in a file containing
multiple 2D image. I would like to be able to label the image with an ID
number (or two) associated with each 2D data set stored in the file. I
have the suspicion I should be able to do this with the "labels"  command
and the
"using" command. The "using" command would specify which bits of data in
the file contain the ID number/s.

My questions are: (1) How should I structure my data file so this can be
done and, (2) How do I use "using" and "label" to do this?

Thanks again!!

[Gnuplot-info] reading file data into variables

[<she...@be...>]

Hi Gnuploteers

I would like to be able to read a set of numbers contained at the beginning
of a file and store the values in variables used in a GnuPlot script. Can
this be done? If yes then how?

Thanks again!

Re: [Gnuplot-info] incrementing a counter

[<she...@be...>]

Thanks Thomas

Can I increment the counter when a key press (eg. the up arrow key) is
pressed by using the bind command? If so can you show me how?

Thanks again

>
> initialize:
> a=1
>
> increment:
> a=a+1
>
>
> SHELTRAW, DANIEL wrote:
>>
>> Hi Gnuplot users
>>
>> Could someone please tell me how one can initialize and increment a
>> variable within a GnuPlot script.
>>
>> Thank you
>>
>>
>> ------------------------------------------------------------------------------
>>
>> _______________________________________________
>> gnuplot-info mailing list
>> gnu...@li...
>> https://lists.sourceforge.net/lists/listinfo/gnuplot-info
>>
>>
>
> --
> View this message in context:
> http://old.nabble.com/incrementing-a-counter-tp28601689p28605906.html
> Sent from the Gnuplot - User mailing list archive at Nabble.com.
>
>
> ------------------------------------------------------------------------------
>
> _______________________________________________
> gnuplot-info mailing list
> gnu...@li...
> https://lists.sourceforge.net/lists/listinfo/gnuplot-info
>

[Gnuplot-info] passing an argument to gnuplot script

[<she...@be...>]

Hi Gnuplotters

I have a gnuplot script to which I would like to pass an numerical argument.
How might I do this?

Thank you

Re: [Gnuplot-info] incrementing a counter

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

initialize:
a=1

increment:
a=a+1


SHELTRAW, DANIEL wrote:
> 
> Hi Gnuplot users
> 
> Could someone please tell me how one can initialize and increment a
> variable within a GnuPlot script.
> 
> Thank you
> 
> 
> ------------------------------------------------------------------------------
> 
> _______________________________________________
> gnuplot-info mailing list
> gnu...@li...
> https://lists.sourceforge.net/lists/listinfo/gnuplot-info
> 
> 

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[Gnuplot-info] incrementing a counter

[<she...@be...>]

Hi Gnuplot users

Could someone please tell me how one can initialize and increment a
variable within a GnuPlot script.

Thank you

Re: [Gnuplot-info] Plotting lines represented by (r, theta)

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

James00007 wrote:

> I am doing some other plotting the in the same script/plot but those
> functions are *not*
> in parametric mode whereas this particular plot requires parametric mode.
> 
> Is there a way to plot both kinds of functions in the same plot? 

Of course.  Any function f(x) is representable as a parametric curve
(t, f(t)), or in case you need the x range to be different from the t range:

	(my_x(t), f(my_x(t)))

Lesson to be learned: functions don't care about the name of their 
arguments.  It doesn't _have_ to be 'x'.

[Gnuplot-info] how to make animation

[HAMED A. <s.h...@gm...>]

i have several files for different times and i want to make an animation
with them but i don't know how to do that by splot.

Re: [Gnuplot-info] Plotting lines represented by (r, theta)

[James00007 <ach...@gm...>]

Thanks a lot for all the help. I was able to do what I needed to.

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