Sgrayplot - smooth 2D plot of a surface using colors

Calling Sequence

Sgrayplot(x,y,z,[strf,rect,nax])

Description

Sgrayplot is the same as grayplot but the plot is smoothed. The function fec is used for smoothing. The surface is plotted assuming that it is linear on a set of triangles built from the grid:

    ______ 
    | /| /| 
    |/_|/_|  
    | /| /|
    |/_|/_|
   

Enter the command Sgrayplot() to see a demo.

Examples

x=-10:10; y=-10:10;m =rand(21,21);
Sgrayplot(x,y,m,"111",[-20,-20,20,20])
t=-%pi:0.1:%pi; m=sin(t)'*cos(t);
xbasc()
Sgrayplot(t,t,m)
 

See Also

fec  fgrayplot  grayplot  Sfgrayplot  

Author

J.Ph.C.