Script:
deff('[z]=surf(x,y)','z=x**2+y**2');
fgrayplot(-1:0.1:1,-1:0.1:1,surf);
xtitle('fgrayplot ',' ',' ');
This demo draw the grayplot of a surface defined
by a function
1.Send the script to the Server and receive the picture.
the window shows a piece of message.
the picture of the function
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