Re: cvs(today): splot "with image" y-size; missing data color

[Petr M. <mi...@ph...>]

> 1) when I use identical data and an identical macro for "with pm3d" and
> "with image" (postscript terminal), the image is drawn much too big and
> covers the lower plot border. do you have any idea how to fix this?
> (for examples see above url)

In pm3d, you can use "set pm3d clip..." settings.


> 2) is there any way to set the "missing data" color for "with image" (and
> perhaps "with pm3d") ?
> I.e., I am doing many log plots with noisy data, and "low value" means
> "white" in my palette. I'd very much like to be able to set "missing data"
> as "white", since thats what (minimally) negative values end up as....

For pm3d, either miss them in the data file, or set a z-range, or use
different z-range and cb-range;
	set zrange [10:1e8]
will invalidate all data out of the above range.

That cannot be done for "with image" for principal reasons -- that's to draw
a matrix, so all pts must be valid. Thus, you have to make a palette with
one color white and use the corresponding value for coloring your special
pixels.

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PM