sandbox & gnuplot

[jose.lopez...@gmail.com]

Hi all,

I have prepared with M.A. Herrada a simulation of his recent work with Jens Eggers (and colleagues) to be published in JFM. It is in my sandbox ( http://basilisk.fr/sandbox/lopez/unsymshock.c ). However I have not been able to plot the graphics with gnuplot.

I do not know if what I describe below is related to this but
when I run it in my own repository (make unsymshock.tst) it creates a 'plots' file in the corresponding directory that is automatically deleted when the simulation finish.

Shall I have to modify the Makefile or to add some 'set terminal... ' stuff to the gnuplot part ?

/**
~~~gnuplot
set terminal ....
.....
*/

Cheers and thank in a advance !

Jose

[Stephane Popinet]

Hi Jose,

When I do:

make unsymshock.tst
make unsymshock/plots

I get:

cd unsymshock && awk -f /home/popinet/basilisk/src/gnuplot.awk <
../unsymshock.c > plots && \
PNG=pngcairo sh /home/popinet/basilisk/src/gnuplot.sh || rm -f plots
unsymshock.c:113: warning: gnuplot: invalid command

and indeed at line 113 your caption is on multiple lines, which is not
allowed. If I fix this, I then get:

make unsymshock/plots
...
unsymshock.c:136: warning: gnuplot: *All* edges undefined or out of
range, thus no plot.

so you need to fix your gnuplot script.

cheers

Stephane

[Jose M. López-Herrera Sánchez]

---------- Forwarded message ----------
From: Jose M. López-Herrera Sánchez <jose.lopez...@gmail.com>
Date: 2017-04-19 20:46 GMT+02:00
Subject: Re: sandbox & gnuplot
To: Stephane Popinet <pop...@basilisk.fr>

Hi Stephane,

and indeed at line 113 your caption is on multiple lines, which is not allowed.

Ok, I will simplify the caption.

unsymshock.c:136: warning: gnuplot: *All* edges undefined or out of range, thus no plot.

so you need to fix your gnuplot script.

Weird! I create first a gnuplot script ['density.plt' in this case (I attach)]  that I inspect by doing,

% gnuplot

> load 'density.plt'

I keep tuning the .plt file until  I am happy with the graph. Only then, I cut & paste the .plt script into the c file.

It must be some type of incompatibility between the terminal you set in gnuplot.sh  and the terminal that by defect use my gnuplot.  I will investigate a little bit.

Cheers

[jose.lopez...@gmail.com]

Hi Stephane,

I am trying to fix the problem of graph. To do this I have proceed little by little in my sandbox with the following procedure.

1. I have removed all the '  ~~~gnuplot'  from the c file.
2. I have done %make unsymshock.tst (fime)!
3. Little by little I have been adding the gnuplot stuff.
   3.a First a graph
   3.b running make unsymshock/plots and inspecting _plot0.png files

Doing this I have generated _plot0.png  and  _plot1.png  I attach

However when I move this changes to c file in the wiki. I reproduce the error

*All* edges undefined or out of range ....

I wonder If this is due to the different versions of gnuplot  (mine Version 4.6 patchlevel 4).

Could you please check your version and see if you now generates _plot0.png and _plot1.png ?

Cheers (and sorry by bothering you with this stuff).

Jose

[Stephane Popinet]

> I wonder If this is due to the different versions of gnuplot (mine
> Version 4.6 patchlevel 4).

The version of gnuplot on the server is 4.4, so I suspect the problem is
due to a difference in versions. Check if any of the features you are
using for your fancy graphs have been introduced between 4.4 and 4.6.

cheers

Stephane