Scilab Function
Last update : April 1993
grayplot - 2D plot of a surface using
colors
Calling Sequence
- grayplot(x,y,z,[strf,rect,nax])
- grayplot(x,y,z,<opt_args>)
Parameters
-
x,y: real row vectors of size n1 and n2.
-
z: real matrix of size (n1,n2). z(i,j) is the value
of the surface at the point (x(i),y(j)).
-
<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 and
plot2d_old_version).
-
strf,rect,nax: see plot2d.
Description
grayplot makes a 2D plot of the surface given by
z 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 grayplot() to see a demo.
Examples
x=-10:10; y=-10:10;m =rand(21,21);
grayplot(x,y,m,rect=[-20,-20,20,20])
t=-%pi:0.1:%pi; m=sin(t)'*cos(t);
clf()
grayplot(t,t,m)
See Also
fgrayplot, plot2d, Sgrayplot, Sfgrayplot,
Author
J.Ph.C.