graymap-rotate-left
Synopsis
(graymap-rotate-left graymap)
Parameters
- graymap
Description
This procedure rotates a greymap 90 degrees counter-clockwise.
Side Effects
Return Value
The resulting graymap is returned.
Example
> (define x (mandelbrot -2.0 2.0 -2.0 2.0 200 640))
x
> (graymap-equalize! x)
#<graymap(16) orow:-1 ocol:-1 xres:-1 yres:-1 w:640 h:640>
> (define y (graymap-rotate-left x))
z
> (graymap-writepng y "graymap-rotate-left.png")
ok
>
The resulting PNG file displays as follows:
