Re: What plotting program?

[Juergen W. <wie...@fr...>]

Hi,

> In you opinion what plotting programe made this contour plot,
> http://solardat.uoregon.edu/download/misc/EugeneContour.pdf

You can get a cheap version of this with the label_contours.awk
script from the gnuplot home page.

> What do you think?

Personally, I like the following representation:

f(x,y) = sin(sqrt(x*x+y*y)) / sqrt(x*x+y*y)
Dcnt = 0.2
set samples 200
set isosamples 200
unset surface
set contour base
set cntrparam levels incremental -1, Dcnt, 1
set table "tmp.dat"
splot f(x,y)
unset table
unset contour

set size ratio -1
set cbrange [-1:1]
set palette defined (-1 'red', 0 'white', 1 'blue')
plot [-10:10] [-10:10] '++' using 1:2:(Dcnt*floor(f($1,$2)/Dcnt)) with 
image, \
     "tmp.dat" w l lt -1


Juergen