Groups > comp.graphics.apps.gnuplot > #2166

Re: Bug on palette

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From	Olaf Schultz <o.schultz@enhydralutris.de>
Newsgroups	comp.graphics.apps.gnuplot
Subject	Re: Bug on palette
Date	Sat, 19 Oct 2013 13:28:32 +0200
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Vasilis wrote:
> Dear Ethan,
> 
> thank you for your reply, but i think it is a problem that could be fixed. In any case it was working back in 4.2.
> 
> Setting a low number of maxcolor is extremely important when we make colorplots with dose (output of monte carlo physics programs). Setting a low number of maxcolors allows you to perfectly distinguish visually various regions of interest in your plot. If you use a smooth palette, you get a pleasing result for the eye but it is very hard to read it (e.g get the value-range of a pixel). We wonder is this color or the next one? Almost all scientific programs that I know (monte carlo, molecular dynamics, finite elements etc) they use the same approach they define a limited number of colors (16-30). Further more since we plot always in 'log cb' we try to align the colors with the decades e.g. 4-5 colors per decade.
> 
> Maybe as you proposed using "N separate linetype colors and plot with linecolor variable"  could be a solution for us.
> Could you please give me an example.
> 
> BTW I've tried to make also a contour plot of our data with
> 
> reset
> set contour
> set dgrid3d 40,40
> unset surface
> splot 'enedep.dat' w l
> 
> and I get the error
>>>>>      Gridding of the color column is not implemented
> I don't have any "color" column
> 
> If I give
> splot 'enedep.dat' u 1:2:3 w l
> it makes the plot
> 
> our data are blocks of
> x1 y1 z err
> x2 y1 z err
> ....
> 
> x1 y2 z err
> x1 y2 z err
> ....
> 
> Vasilis

Thread

Bug on palette Vasilis <vvlachoudis@gmail.com> - 2013-10-18 03:32 -0700
  Re: Bug on palette Ethan A Merritt <merritt@u.washington.edu> - 2013-10-18 17:18 -0700
    Re: Bug on palette Vasilis <vvlachoudis@gmail.com> - 2013-10-19 01:28 -0700
      Re: Bug on palette Olaf Schultz <o.schultz@enhydralutris.de> - 2013-10-19 13:28 +0200
      Re: Bug on palette Olaf Schultz <o.schultz@enhydralutris.de> - 2013-10-19 13:37 +0200
      Re: Bug on palette Ethan A Merritt <EAMerritt@gmail.com> - 2013-10-19 10:34 -0700
        Re: Bug on palette Ethan A Merritt <EAMerritt@gmail.com> - 2013-10-19 11:28 -0700
          Re: Bug on palette Vasilis <vvlachoudis@gmail.com> - 2013-10-20 05:27 -0700
          Re: Bug on palette Vasilis <vvlachoudis@gmail.com> - 2013-10-20 08:59 -0700
          Re: Bug on palette Vasilis <vvlachoudis@gmail.com> - 2013-10-20 09:37 -0700
            Re: Bug on palette sfeam <sfeam@users.sourceforge.net> - 2013-10-20 12:05 -0700
              Re: Bug on palette Vasilis <vvlachoudis@gmail.com> - 2013-10-21 00:28 -0700
                Re: Bug on palette sfeam <sfeam@users.sourceforge.net> - 2013-10-22 14:20 -0700
                Re: Bug on palette Vasilis <vvlachoudis@gmail.com> - 2013-10-23 00:42 -0700

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