Examples
t=-1:0.1:1; deff("[z]=my_surface(x,y)","z=x**2+y**2") fgrayplot(t,t,my_surface,rect=[-2,-2,2,2]) |  |  |
2D plot of a surface defined by a function using colors
fgrayplot(x,y,f,[strf,rect,nax]) fgrayplot(x,y,f,<opt_args>) h = fgrayplot(...)
real row vectors.
external of type y=f(x,y).
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).
see plot2d.
This optional output contains a handle to a Grayplot entity. Use h to modify its properties
For a list of properties, see grayplot_properties.
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]=my_surface(x,y)","z=x**2+y**2") fgrayplot(t,t,my_surface,rect=[-2,-2,2,2]) | | |
| Version | Description |
| 2025.0.0 | Function returns the created handle(s). |