Scriptographer.org - Average Color

Hi,

I'm trying to make a script that will read the average color value of a set of pixels in an image. The user will be able to set the square amout of pixels to be read.
Kind of like the mosaic filter but I want to be able to just get the color values.
So far I have just made 4 for-loops as following:

for py = 0; py < picturesizeY; increase py by square value

for px = 0; px < picturesizeX; increase px by square value

for y = py; y < py + square Value;

for x = px; x < px + square Value;

getPixel(x, y);

}
}
}
}

This is increadably slow. I saw in the reference that there is a function that will read the average color in a rectangle. How would I go about using that instead (and is it faster)?
I want to read the pixel values of the image but not draw on the actual image.

Hope this makes any sense to you all.

Grateful for help!

raster.getAverageColor(rect) tends to be very fast.

Read more about how to make rectangles in the Point, Size and Rectangle tutorial.

The following code should help you on your way:

var rectSize = new Size(30, 20);

var rasters = document.getItems({
	selected: true,
	type: Raster
});

if(rasters.length) {
	var raster = rasters[0];
	var rasterSize = raster.bounds.size;

	var columns = Math.round(rasterSize.width / rectSize.width);
	var rows = Math.round(rasterSize.height / rectSize.height);

	var offset = raster.bounds.bottomLeft;
	
	// loop through rows and columns
	for(var row = 0; row < rows; row++) {
		for(var column = 0; column < columns; column++) {
			var bottomLeft = offset + new Point(column, row) * rectSize;
			var rectangle = new Rectangle(bottomLeft, rectSize);
			var color = raster.getAverageColor(rectangle);
			var path = new Path.Rectangle(rectangle);
			path.fillColor = color;
		}
	}
}