| | | Scilab Reference Manual | |
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fgrayplot — 2D plot of a surface defined by a function using colors
fgrayplot(x,y,f,[strf,rect,nax]) fgrayplot(x,y,f,<opt_args>)
| x,y | : real row vectors. |
| f | : external of type y=f(x,y). |
| <opt_args> | : This represents a sequence of statements key1=value1, key2=value2,... where key1, key2,... can be one of the following: rect, nax, strf or axesflag and frameflag (see plot2d). |
| strf,rect,nax | : see plot2d. |
fgrayplot makes a 2D plot of the surface given by z=f(x,y) on a grid defined by x and y. Each rectangle on the grid is filled with a gray or color level depending on the average value of z on the corners of the rectangle.
Enter the command fgrayplot() to see a demo.
t=-1:0.1:1;
deff("[z]=surf(x,y)","z=x**2+y**2")
fgrayplot(t,t,surf,rect=[-2,-2,2,2])
J.Ph.C.
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