Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!eu.feeder.erje.net!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail From: Olaf Schultz Newsgroups: comp.graphics.apps.gnuplot Subject: Re: Bug on palette Date: Sat, 19 Oct 2013 13:28:32 +0200 Lines: 36 Message-ID: References: <5be5ade1-cbfe-446b-8654-5719c250050f@googlegroups.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Trace: individual.net TdAFCgzkNfUKnUTqcdbKpwNkTWNKreJriDV4dL7DJ1X98Vhmtp Cancel-Lock: sha1:Oq7xiJwtif1MYu3jK1pZcW7J0Qk= User-Agent: Thunderbird 2.0.0.18 (X11/20081112) In-Reply-To: Xref: csiph.com comp.graphics.apps.gnuplot:2166 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