gnuplot-info — For questions and discussion about gnuplot

[Gnuplot-info] Applying a font style to wxt

[Nunzio L. <nun...@gm...>]

Hi everyone,

for how much I try I cannot understand it. How can I apply a Bold and/or
Italic style to fonts in wxt terminal? I've read through the manual and it
seems to be someway related to fontconfig, which I really don't know what it
is! I'm using Linux Fedora 13

Thanks,

N.

Re: [Gnuplot-info] Postscript B/W plot - opaque points with white fill

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

plot smaller white points on top of larger black points.
an example:

set samples 20
set xrange [-pi:pi]
set yrange [-1.1:1.1]
plot sin(x) with lines linecolor rgb "black" linewidth 10, \
sin(x) with points pointtype 7 pointsize 3 linecolor rgb "black" notitle, \
sin(x) with points pointtype 7 pointsize 2 linecolor rgb "white" notitle


warpino wrote:
> 
> Hi everyone,
> 
> I'm trying to plot data with solid black line and white filled points in a
> B&W Postscript terminal. Is it possible to do that?
> I've found solid black circles (pointtype 65) but not opaque white filled
> circles.
> 
> Thanks very much for your help,
> 
> NL
> ------------------------------------------------------------------------------
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[Gnuplot-info] Postscript B/W plot - opaque points with white fill

[Nunzio L. <nun...@gm...>]

Hi everyone,

I'm trying to plot data with solid black line and white filled points in a
B&W Postscript terminal. Is it possible to do that?
I've found solid black circles (pointtype 65) but not opaque white filled
circles.

Thanks very much for your help,

NL

[Gnuplot-info] Tiny invisible border between data points with eps output

[Erich H. <eh...@mi...>]

I'm trying to plot some data with the "with image" option and I'm
getting a tiny invisible border around each pixel of the data (see
attached zoomed-in screenshot).  This artifact only occurs if I use
certain output styles, but for some reason it looks particularly
horrible when looking at the figure at normal zoom.  Is there any way
to get rid of this?  I can use the png output if I really have to, but
I intend on embedding this figure in a PDF document so it would be
really nice to have everything be scalable.

Erich Hoover
eh...@mi...

Re: [Gnuplot-info] Color-graded line?

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

assuming your datafile looks like this:
time direction speed
you could plot with a color palette:

set colorbox
plot 'datafilename' using 1:2:3 with lines linecolor palette


fusselpelusa wrote:
> 
> Hi,
> Is there a way to color a line according to some z-values? Like pm3d map 
> just on the line and not in the background.
> 
> If I want to display wind speed and direction vs time in one graph. OK 
> that could be done with 2 y-axes, but maybe this can be done in gnuplot? 
> I would display the wind direction in a usual x-y plot. Having now the 
> line color-graded to the speed would be perfect.
> 
> Thanks
> Thomas
> 
> ------------------------------------------------------------------------------
> This SF.net Dev2Dev email is sponsored by:
> 
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> 

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[Gnuplot-info] how to draw ellipsoid

[mannu j. <man...@re...>]

Hi,



I want to draw one ellipsoid using gnuplot with only 4 curve. Does anyone have any idea how to do that?  

Re: [Gnuplot-info] Color-graded line?

[Thomas P. <jun...@gm...>]

Sorry to write again.
Or if the line coloring is not possible I could use the filling in 
between lines and create a band +- the wind direction and then fill it 
with below/above however this filling color should ow be color-graded 
according to the wind speed.
Thanks
Thomas


Thomas Pfrommer wrote:
> Hi,
> Is there a way to color a line according to some z-values? Like pm3d map 
> just on the line and not in the background.
>
> If I want to display wind speed and direction vs time in one graph. OK 
> that could be done with 2 y-axes, but maybe this can be done in gnuplot? 
> I would display the wind direction in a usual x-y plot. Having now the 
> line color-graded to the speed would be perfect.
>
> Thanks
> Thomas
>
> ------------------------------------------------------------------------------
> This SF.net Dev2Dev email is sponsored by:
>
> Show off your parallel programming skills.
> Enter the Intel(R) Threading Challenge 2010.
> http://p.sf.net/sfu/intel-thread-sfd
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> gnuplot-info mailing list
> gnu...@li...
> https://lists.sourceforge.net/lists/listinfo/gnuplot-info
>
>   

[Gnuplot-info] Color-graded line?

[Thomas P. <jun...@gm...>]

Hi,
Is there a way to color a line according to some z-values? Like pm3d map 
just on the line and not in the background.

If I want to display wind speed and direction vs time in one graph. OK 
that could be done with 2 y-axes, but maybe this can be done in gnuplot? 
I would display the wind direction in a usual x-y plot. Having now the 
line color-graded to the speed would be perfect.

Thanks
Thomas

Re: [Gnuplot-info] background

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

'unset' the object after the first plot.


Tamas Horvath wrote:
> 
> I'm trying to set a background colour for my plot using the example in the
> documentation with:
> 
> set object rectangle from screen 0,0 to screen 1,1 behind fc rgb 'black'
> fs
> solid 1.0;
> 
> gnuplot version:
> G N U P L O T
> Version 4.5 patchlevel 0
> last modified November 2009
> 
> my plot is a multiplot, but only the last plot is actually above the
> rectangle. Any suggestions to rectify this situation?
> 
> Tamas
> ------------------------------------------------------------------------------
> This SF.net Dev2Dev email is sponsored by:
> 
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> 

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[Gnuplot-info] background

[Tamas H. <ho...@gm...>]

I'm trying to set a background colour for my plot using the example in the
documentation with:

set object rectangle from screen 0,0 to screen 1,1 behind fc rgb 'black' fs
solid 1.0;

gnuplot version:
G N U P L O T
Version 4.5 patchlevel 0
last modified November 2009

my plot is a multiplot, but only the last plot is actually above the
rectangle. Any suggestions to rectify this situation?

Tamas

[Gnuplot-info] plot with class tag

[arvin m. <arv...@ya...>]

Hi to all, 
I have data file like Class V1    V2A    -2.0    0.0A     0.9    0.7B     0.1    0.6C     4.1    0.4C     1.0    1.9B     1.1    0.5
I want to plot the V1:V2 & want to put corresponding class tag (A, B or C) on every point.Any help in this regard?Thanks in advance 


      

Re: [Gnuplot-info] [BULK] Re: png plot error.

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

On 02.09.2010 08:31, Galebonwe Ramaphane wrote:

> * I installed a package made by the distributor ( ** gd-2.0.35.tar.gz)

.tar.gz for distribution package?  Feels unlikely.

So what did the libgd related messages from ./configure look like?

Is there, by any chance, a "development" package accompanying that 
binary package, and that you didn't install?

Re: [Gnuplot-info] problems with polar plot: no negative axis labels

[Johannes R. <ja...@ho...>]

Thanks for the suggestion, but rrange is the wrong thing: In polar mode
gnuplot> set rrange [0:10]
gnuplot> plot t
does the same thing as

gnuplot> set rrange [-5:5]
gnuplot> plot t-5
(in other words, the lower bound of the rrange will always correspond to the origin, and the rest is shifted)

I'm just wondering, because if I look at the great page
http://t16web.lanl.gov/Kawano/gnuplot/polar-e.html
(which is, by now, a bit outdated, but still very useful) I see that this behaviour must have changed some versions ago.  While I admit that this behaviour has some justification, at least for my applications it does not make sense.  And using a multiplot insert is a bit overkill just for plotting the axis labels.

Meanwhile I found another solution to my problem: Specifying the axis labels one by one does work, e.g:
set xtics ("7" 7, "6" 6, "5" 5, "4" 4, "3" 3, "2" 2, "1" 1, "0" 0, "-1" -1, "-2" -2, "-3" -3, "-4" -4, "-5" -5)
plot t

Cheers,

Johannes Rauh

> From: gu...@if...
> 
> As Thomas Sefzick has shown, you can play with 'rrange', up to making
> its lower bound negative.
> BUT, note:
> 1. both coordinates will be non-monotoneus then, and worse yet
> 2. the shape of your curve may be substantially different  (test Thomas'
>      example, see the result, and continue with:
>      > gnuplot> set rrange[*:*]
>      > gnuplot> replot
>      )
> Maybe you should consider making your polar plot to be an insert to the
> regular picture, in usual, Cartesian coordinates.  For this you should
> rather consult/consider  the 'multiplot'  mode.
> 
> Cheers,
> Marek Gutowski
> 
> Johannes Rauh wrote:
> > @Mauricio: Thanks for the workaround to this "feature" ;-)
> > 
> > @Marek: Thanks for the explanation.
> > 
> > Is it a feature I can deactivate? My problem is the following: I want to 
> > plot something in the x-y-plane, using polar coordinates, so having a 
> > minus sign would be very nice.
> > 
> > Cheers,
> > Johannes Rauh
> > 
> >  > It's not an error, it's a feature. The numbers you read are NOT
> >  > y-values - you're plotting in polar coordinate system, aren't you?
> >  > So, what you see, is a set of r-values, and those are non-negative.
> >  >
> >  > Cheers,
> >  > Marek Gutowski
> >  >
> >  > Johannes Rauh wrote:
> >  > > Hello,
> >  > >
> >  > > I have a problem with gnuplot: When I do a polar plot, like e.g.
> >  > >
> >  > > set polar
> >  > > plot cos(t)
> >  > >
> >  > > the minus signs are missing on the axis, so the labels at the y-axis go
> >  > > 0.5 0.4 0.3 0.2 0.1 0 0.1 0.2 0.3 0.4 0.5
> >  > >
> >  > > Any i! deas?
> >  > > Kind regards,
> >  > >
> >  > > Johannes Rauh
> 
> 
> -- 
> Marek W. Gutowski
> Institute of Physics, ON-3.2, Al. Lotnikow 32/46
> 02-668 Warszawa, POLAND, tel. +48-22-0228436601 ext. 3122
> == To talk or not to talk?  Yes, talk, plain ASCII please ==
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 		 	   		  

Re: [Gnuplot-info] Problems with character 0 in postscript font

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

set xlabel "{/CMSY10 \\000 }{/CMMI12 x}"


Bugzilla from ja...@ho... wrote:
> 
> 
> Hello,
> 
> I have a problem using the character 0 in a postscript font.
> 
> set xlabel "{/CMSY10 \000 }{/CMMI12 x}"
> 
> does not work.  Any other number (instead of the 000) works without a
> problem.
> 
>  I'm using the terminal
> 
> set term postscript enhanced colour eps fontfile "cmmi12.pfb" fontfile
> "cmr12.pfb" fontfile "cmsy10.pfb" size 3.33,2.33 
> 
> My gnuplot version is 4.4.
> Regards,
> 
> Johannes Rauh
> 
> 
>  		 	   		  
> ------------------------------------------------------------------------------
> This SF.net Dev2Dev email is sponsored by:
> 
> Show off your parallel programming skills.
> Enter the Intel(R) Threading Challenge 2010.
> http://p.sf.net/sfu/intel-thread-sfd
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> 

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[Gnuplot-info] Plotting two functions with gnuplot, one of them opaque

[Mario R. <rom...@un...>]

Dear Gnuplot-Folks,

I was wondering whether I could use Gnuplot to plot one function opaque
and one function transparent at the same time. I want to use this to
make the first function more recognizable in the following example:

gnuplot> set xrange[0:1]
gnuplot> set yrange[0:1]
gnuplot> set isosamples 50
gnuplot> splot exp(-100*( (x-0.4)**2 + (y-0.3)**2 )),\
              exp(-10*( (x-0.4)**2 + (y-0.3)**2 ))

Unfortunately I have not found anything about that topic in the web, so
perhaps someone on this list would be so kind to provide me with a
solution for that.


Cheers,
Mario
---

Dipl. math. oec. Mario Rometsch
Research Training Group 1100
Institute for Numerical Mathematics
Helmholtzstr. 22, E012
Phone (+49) 731 50-31085
Mail      rom...@un...

[Gnuplot-info] Problems with character 0 in postscript font

[Johannes R. <ja...@ho...>]

Hello,

I have a problem using the character 0 in a postscript font.

set xlabel "{/CMSY10 \000 }{/CMMI12 x}"

does not work.  Any other number (instead of the 000) works without a problem.

 I'm using the terminal

set term postscript enhanced colour eps fontfile "cmmi12.pfb" fontfile "cmr12.pfb" fontfile "cmsy10.pfb" size 3.33,2.33 

My gnuplot version is 4.4.
Regards,

Johannes Rauh


 		 	   		  

Re: [Gnuplot-info] problems with polar plot: no negative axis labels

[Johannes R. <ja...@ho...>]

@Mauricio: Thanks for the workaround to this "feature" ;-)

@Marek: Thanks for the explanation.

Is it a feature I can deactivate? My problem is the following: I want to plot something in the x-y-plane, using polar coordinates, so having a minus sign would be very nice.

Cheers,
Johannes Rauh

> It's not an error, it's a feature.  The numbers you read are NOT
> y-values - you're plotting in polar coordinate system, aren't you?
> So, what you see, is a set of r-values, and those are non-negative.
> 
> Cheers,
> Marek Gutowski
> 
> Johannes Rauh wrote:
> > Hello,
> > 
> > I have a problem with gnuplot: When I do a polar plot, like e.g.
> > 
> > set polar
> > plot cos(t)
> > 
> > the minus signs are missing on the axis, so the labels at the y-axis go
> > 0.5 0.4 0.3 0.2 0.1 0 0.1 0.2 0.3 0.4 0.5
> > 
> > Any ideas?
> > Kind regards,
> > 
> > Johannes Rauh
 		 	   		  

Re: [Gnuplot-info] problems with polar plot: no negative axis labels

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

set size square
set polar
set grid polar
set rrange [-1:1]
set xrange [-2:2]
set yrange [-2:2]
plot cos(t)


Bugzilla from ja...@ho... wrote:
> 
> 
> Hello,
> 
> I have a problem with gnuplot: When I do a polar plot, like e.g.
> 
> set polar
> plot cos(t)
> 
> the minus signs are missing on the axis, so the labels at the y-axis go
> 0.5 0.4 0.3 0.2 0.1 0 0.1 0.2 0.3 0.4 0.5
> 
> Any ideas?
> Kind regards,
> 
> Johannes Rauh
> 
>  		 	   		  
> ------------------------------------------------------------------------------
> This SF.net Dev2Dev email is sponsored by:
> 
> Show off your parallel programming skills.
> Enter the Intel(R) Threading Challenge 2010.
> http://p.sf.net/sfu/intel-thread-sfd
> _______________________________________________
> gnuplot-info mailing list
> gnu...@li...
> https://lists.sourceforge.net/lists/listinfo/gnuplot-info
> 
> 

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Re: [Gnuplot-info] [BULK] Re: png plot error.

[Galebonwe R. <GRa...@go...>]

Thanks.

That means your installation of libgd didn't work as planned.  Was that 
a binary package made by your distributor, or did you build it yourself?

I installed a package made by the distributor (gd-2.0.35.tar.gz).

Regards.
 

[Gnuplot-info] problems with polar plot: no negative axis labels

[Johannes R. <ja...@ho...>]

Hello,

I have a problem with gnuplot: When I do a polar plot, like e.g.

set polar
plot cos(t)

the minus signs are missing on the axis, so the labels at the y-axis go
0.5 0.4 0.3 0.2 0.1 0 0.1 0.2 0.3 0.4 0.5

Any ideas?
Kind regards,

Johannes Rauh

 		 	   		  

Re: [Gnuplot-info] Font size of numbers on axis

[te.verde <te....@we...>]

I found it out by myself... the command is:
set ytics font ",fontsize" resp. set xtics font",fontsize"




te.verde wrote:
> 
> Hello!
> Is there any way to change the font size of the numbers written next to
> the axis?
> Greetings!
> 

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Re: [Gnuplot-info] [BULK] Re: png plot error.

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

On 01.09.2010 08:35, Galebonwe Ramaphane wrote:

> [hrmoper@cluster ~]$ gnuplot --version
> gnuplot 4.0 patchlevel 0

That version of gnuplot is ancient.  It's about 6,5 years old.  You 
really should consider to update to a more recent version.

> I also noticed from the help menu that I need libgd to create png
> images. I tried installation of libgd, but I still get the same errors.

That means your installation of libgd didn't work as planned.  Was that 
a binary package made by your distributor, or did you build it yourself?

Re: [Gnuplot-info] how to plot 2d figures with discontinuous x axis

[wp1113370-gnuplot <ha...@gn...>]

Have a look at
http://gnuplot-tricks.blogspot.com/2010/06/broken-axis-once-more.html
there it is done for the y-axis.

/Hagen


On Tue, 31 Aug 2010 23:51:16 -0700 (PDT), thorneliu
<liu...@co...> wrote:
> http://old.nabble.com/file/p29590545/screenshot-2.png 
> as the example figure shows, three figures are plotted in one figure and 
> the x axis is not contunuous cause the broken intervals has no data and is 
> not necessary to plot. And the the broken part in the x axis is expressed as 
> "-//-". How can I plot a figures like this with the given data files?
> Thanks in advance

Re: [Gnuplot-info] how to plot 2d figures with discontinuous x axis

[wp1113370-gnuplot <gn...@kk...>]

Have a look at
http://gnuplot-tricks.blogspot.com/2010/06/broken-axis-once-more.html
There it is done for the y-axis.

/Hagen

On Tue, 31 Aug 2010 23:51:16 -0700 (PDT), thorneliu
<liu...@co...> wrote:
> http://old.nabble.com/file/p29590545/screenshot-2.png 
> as the example figure shows, three figures are plotted in one figure and 
> the x axis is not contunuous cause the broken intervals has no data and is 
> not necessary to plot. And the the broken part in the x axis is expressed as 
> "-//-". How can I plot a figures like this with the given data files?
> Thanks in advance

[Gnuplot-info] how to plot 2d figures with discontinuous x axis

[thorneliu <liu...@co...>]

http://old.nabble.com/file/p29590545/screenshot-2.png 
as the example figure shows, three figures are plotted in one figure and 
the x axis is not contunuous cause the broken intervals has no data and is 
not necessary to plot. And the the broken part in the x axis is expressed as 
"-//-". How can I plot a figures like this with the given data files?
Thanks in advance
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