[Radiance-general] Custom false color palette

[Marija Velickovic]

Hi Dave,

Maybe not direct answer to your question. In RadDisplay tool
http://deluminaelab.com/en/raddisplay_details.html you can define
custom palette for radiance images.

Palette is not defined with the functions (we didn't implement that
feature yet), but you can select individual palette colors or define
start and end color and program will generate the palette. You can
also define palette maximum and minimum value, which can also be very
helpful in some cases.

If you must follow the formula then it is better to work with
falsecolor program.

Marija

On Thu, Sep 18, 2008 at 12:10 AM, David Smith <dbs176 at gmail.com> wrote:
> I'm trying to make a false color / pseudo color image that matches the
> color palette from a non-lighting program. It would work great with
> four nested IF statements, but falsecolor -r/g/b doesn't seem to want
> to take them. Has anybody come up with a workaround for this or am I
> better off editing the falsecolor script?
>
> Perhaps there is a way to use higher order functions?
>
> Here's an image of the scale and a close numerical pseudocolor
> traversal: http://tinyurl.com/4e2x7m
>
> This would be the if statement for the falsecolor -r argument:
> if(v-5/7,1,if(v-4/7,7v-4,if(v-2/7,0,if(v-1/7,2-7v,7v))))
>
> --Dave