GROUP;Compute affine params;
	FORMULA;;1;rads=-pi/180*rotation
		INPUT;rotation;rotation;3;8
		OUTPUT;rads;;1;8
	FORMULA;;2;A=scale*cos(rads)
		INPUT;scale;scale;4;8
		OUTPUT;A;A;2;8
	FORMULA;;3;B=-scale*sin(rads)
		OUTPUT;B;B;3;8
	FORMULA;;4;C=scale*(-x_origin1*cos(rads)+y_origin1*sin(rads)+x_origin2)
		INPUT;x_origin1;Easting of origin point;1;8
		INPUT;y_origin1;Northing of origin point;2;8
		INPUT;x_origin2;Local grid X origin;5;8
		OUTPUT;C;C;4;8
	FORMULA;;5;D=scale*sin(rads)
		OUTPUT;D;D;5;8
	FORMULA;;6;E=scale*cos(rads)
		OUTPUT;E;E;6;8
	FORMULA;;7;F=scale*(-x_origin1*sin(rads)-y_origin1 * cos(rads)+y_origin2)
		INPUT;y_origin2;Local grid Y origin;6;8
		OUTPUT;F;F;7;8