Something seems strange in the documentation. In the section "Pigment Maps
and Pigment Lists," there is the statement:

`You may not use pigment_map or individual pigments with an image_map. See
section "Texture Maps" for an alternative way to do this.'

Even though image_maps didn't give me just what I wanted (yet), an image was
rendered using the image_maps I provided.

Rick.

"Ron Parker" <ron### [at] povrayorg> wrote in message
news:slr### [at] fwicom...
>  #macro checker_pigment (Pigment1, Pigment2, Pigment3)
>          gradient x pigment_map {
>             [1/3 Pigment1] [1/3 Pigment2] [2/3 Pigment2] [2/3 Pigment3]}
>          warp {repeat x}
>          warp {repeat y offset 1/3*x}
>          scale <3,1,1>
>    #end

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