For those curious how to use sparseColorImage() directly without the seperate createGradientImage() function.. here is the format of the array used:Array ( [0] => 0 // X1 (X coordinate value #1)[1] => 0 // Y1 (Y coordinate value #1)[2] => 1 // R (red value between 0 and 1)[3] => 0 // G (green value between 0 and 1)[4] => 0 // B (blue value between 0 and 1)[5] => 1 // A (alpha value between 0 and 1)[6] => 400 // X2 [7] => 0 // Y2 [8] => 0 // R [9] => 1 // G [10] => 0 // B [11] => 1 // A[12] => 0 // X3 [13] => 400 // Y3 [14] => 1 // R [15] => 1 // G [16] => 0 // B [17] => 1 // A [18] => 400 // X4[19] => 400 // Y4[20] => 0 // R [21] => 0 // G [22] => 1 // B [23] => 1 // A )<?php$imagick = new imagick();$imagick->newImage(400,400,"white");$imagick->setImageFormat("png");$array = Array(0,0,1,0,0,1,400,0,0,1,0,1,0,400,1,1,0,1,400,400,0,0,1,1);$imagick->sparseColorImage(imagick::SPARSECOLORMETHOD_BILINEAR,$array); header("Content-Type: image/png");echo $imagick->getImageBlob();?>