{
	Generate script of 11x8 sample set of gray patches
	on 2000x1600 pixel canvas.
	Input is column and row number (starting from 0)
}
col = $1;		{ input position }
row = $2;

mingray = 0;		{ reassign if desired }

GAMMA : 2.2;
NCOLS : 11;
NROWS : 8;
XRES : 2000;
YRES : 1600;
MARGIN : 5;
xpatch : floor((XRES-MARGIN)/NCOLS) - MARGIN;
ypatch : floor((YRES-MARGIN)/NROWS) - MARGIN;
textheight : floor(ypatch/7);
xpos = MARGIN + col*(xpatch + MARGIN);
ypos = MARGIN + row*(ypatch + MARGIN);
patchgray = mingray + row*NCOLS + col;
patchvalue = ((patchgray+.5)/256)^GAMMA;