photobot.Layer.levels()
Syntax
canvas.layers[i].levels()
Description
Returns a histogram for each RGBA channel. Returns a 4-tuple of lists, r, g, b, and a. Each list has 255 items, a count of pixels found for each value.
Example
photobot = ximport("photobot") canvas = photobot.canvas(100,100) canvas.layer("robot.jpg") r, g, b, a = canvas.layers[1].levels() print r >>>[98, 125, 127, 168, 175, 156, 154, 140, .. ]
