This filter is found in
Image>Filters/Colors/Smooth Palette
It creates a striped palette from colors in active layer or selection. The main purpose of this
filter is to create colormaps to be used with Flame filter .
Options
Parameter Settings
You can set palette dimensions for Width> and Height.
Dimensions are linked when chain is not broken. You can also select unit.
Search Depth
Increasing Search Depth (1 - 1024) will result in more shades in palette.