_DKR_Sum_Selected_Region.txt

/********************************************************
/*imageJ macro written by dan rozelle dan.rozelle@gmail.com
/*  20091106
/*
/*  extracts area and mean pixel value for a selection (or entire image if 
/*   selection is omitted) and appends the sum of all selected pixels to the 
/*   results panel 
/*
/*  use the 'u' hotkey to run repeatedly after installing
/********************************************************/


macro "_DKR_Sum_Selected_Region [u]" {

	getVoxelSize(width, height, depth, unit);
	pixelWidth = width;
	
	run("Set Measurements...", "area mean redirect=None decimal=2");
	
	
	run("Measure");
	
	selection_area = getResult("Area",nResults-1);
	selection_mean = getResult("Mean",nResults-1);
	
	selection_area = selection_area/(pixelWidth*pixelWidth);
	selection_sum  = selection_area * selection_mean;
	
	setResult("Pixels Selected",nResults-1,selection_area);
	setResult("Sum",nResults-1,selection_sum);
	
	
	updateResults();

}