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Re: Working...
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From: Justace C. <pro...@co...> - 2004-03-05 20:03:04
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I reply to my own message: Got it to work by using (-1 "white", -1 "red", 0 "white", 1 "blue"). Justace On Fri, 2004-03-05 at 13:22, Justace Clutter wrote: > Ok, > > So this might not be a question for this list but here goes. I have > used the set palette defined to (1 "red", 2 "white", 3 "blue") and that > shows the data greatly. And I set cbrange to [-1:1]. Now all the -2 > values are set to bright red, as they should be. Is there a syntax > where I can say I want to interpolate the colors between like -1 and 0 > as red to white, between 0 and 1 interpolate between white and blue and > all colors from -1 and down go to black? I am sure there is a way to do > this, without makeing a huge color xref file. The help documentation > for the set palette is kinda confusing. Thanks for the help. > > Justace > > On Fri, 2004-03-05 at 10:21, Petr Mikulik wrote: > > > region with NaN, but how do I put that in gnuplot so that it does not > > > plot it? I was putting it in as a -2 and then telling it to only plot > > > [-1:1] on the z but that was silly since it is a 2D plot. Maybe the > > > image style needs to have an internal variable that the user can set to > > > define NaN's. That way I could go and set that to -2 and when image > > > converts the float to a color it goes ohhh this is a NaN, what fill > > > style should I use here or what predefined color do I have for NaN. > > > > You generate a discrete palette (palette can be red from a file), set the > > first color to white, and then apply a filter so that the invisible range is > > mapped to white, and the rest to the remaining palette entries. I do it this > > way from Octave. > > > > How to do it more easily (in future)? "With image", colors of all pixels > > have to be defined. So there would have to be "set palette backgroundcolor", > > and "with image" would have to accept the "set zrange" window. Or the > > background colour could be that of linetype e.g. -2? > > > > --- > > Petr Mikulik > > > > > > > > > > > > ------------------------------------------------------- > > This SF.Net email is sponsored by: IBM Linux Tutorials > > Free Linux tutorial presented by Daniel Robbins, President and CEO of > > GenToo technologies. Learn everything from fundamentals to system > > administration.http://ads.osdn.com/?ad_id=1470&alloc_id=3638&op=click > > _______________________________________________ > > gnuplot-beta mailing list > > gnu...@li... > > https://lists.sourceforge.net/lists/listinfo/gnuplot-beta > > > > ------------------------------------------------------- > This SF.Net email is sponsored by: IBM Linux Tutorials > Free Linux tutorial presented by Daniel Robbins, President and CEO of > GenToo technologies. Learn everything from fundamentals to system > administration.http://ads.osdn.com/?ad_id=1470&alloc_id=3638&op=click > _______________________________________________ > gnuplot-beta mailing list > gnu...@li... > https://lists.sourceforge.net/lists/listinfo/gnuplot-beta |
