Re: [Plplot-general] Log scale for frequency plot:

[Raphael R. <raf...@bl...>]

Thank you Alan,
I'll try that asap!

rph


Le 18.05.20 à 18:59, Alan W. Irwin a écrit :
> On 2020-05-05 21:45+0200 Raphael Raccuia wrote:
>
>> Hi list,
>> Any chance to get a custom x axis log scale?
>
> Hi Raphael:
>
> Thanks for your interest in PLplot, and the answer to your question is
> "yes".
>
> The best way to figure out how to do anything with PLplot
> is to consult the code for one of our standard examples.
>
> For example:
>
> # Search for case-insensitive "custom" in our C example source code.
> software@merlin> grep -i custom examples/c/*.c
> examples/c/x02c.c:// Use 100 custom colors in addition to base 16
> examples/c/x02c.c:// Load default cmap0 colors into our custom set
> examples/c/x19c.c:// A custom axis labeling function for longitudes 
> and latitudes.
> examples/c/x19c.c:    // Setup a custom latitude and longitude-based 
> scaling function.
> examples/c/x19c.c:    plscol0( 8, 100, 100, 100 ); //dark grey for 
> custom polygons - generally crags
> examples/c/x33c.c:    "Shade colorbars with custom labels",
>
> So example 19 looks promising for your needs.  Here is software for 
> that example for our various languages:
>
> software@merlin> ls -l examples/*/*19*
> -rw-r--r-- 1 software software 15621 Jan 27 22:26 
> examples/ada/xstandard19a.adb
> -rw-r--r-- 1 software software 14616 Jan 27 22:26 
> examples/ada/xtraditional19a.adb
> -rw-r--r-- 1 software software 12104 Jan 27 22:26 examples/c++/x19.cc
> -rw-r--r-- 1 software software  9911 Jan 27 22:26 examples/c/x19c.c
> -rw-r--r-- 1 software software  9420 Jan 27 22:26 examples/d/x19d.d
> -rw-r--r-- 1 software software 16424 Jan 27 22:26 
> examples/fortran/x19f.f90
> -rw-r--r-- 1 software software 12440 Jan 27 22:26 examples/java/x19.java
> -rw-r--r-- 1 software software  8549 Jan 27 22:26 examples/lua/x19.lua
> -rw-r--r-- 1 software software  9405 Jan 27 22:26 examples/ocaml/x19.ml
> -rw-r--r-- 1 software software  2154 Jan 27 22:26 examples/octave/p19.m
> -rw-r--r-- 1 software software  8532 Jan 27 22:26 examples/octave/x19c.m
> -rwxr-xr-x 1 software software  1158 Jan 27 22:26 examples/python/x19*
> -rw-r--r-- 1 software software  9732 Jan 27 22:26 examples/python/x19.py
> -rwxr-xr-x 1 software software   462 Jan 27 22:26 examples/tcl/x19.in*
> -rw-r--r-- 1 software software  9425 Jan 27 22:26 examples/tcl/x19.tcl
>
> Pick the language of interest to you, and go from there.  Or if you 
> prefer
> a GUI then consult <http://plplot.org/examples.php?demo=19>.
>
> Alan
> __________________________
> Alan W. Irwin
>
> Research affiliation with the Department of Physics and Astronomy,
> University of Victoria, Victoria, BC, Canada.
>
> Programming affiliations with the FreeEOS equation-of-state
> implementation for stellar interiors (freeeos.sf.net); the Time
> Ephemerides project (timeephem.sf.net); PLplot scientific plotting
> software package (plplot.org); the libLASi project
> (unifont.org/lasi); the Loads of Linux Links project (loll.sf.net);
> and the Linux Brochure Project (lbproject.sf.net).
> __________________________
>
> Linux-powered Science
> __________________________