CLIM Adjust Color limits of plot
Section: Handle-Based Graphics
Usage
There are several ways to useclim
to adjust the color limits of
a plot. The various syntaxes are
clim clim([lo,hi]) clim('auto') clim('manual') clim('mode') clim(handle,...)
The first form (without arguments), returns a 2-vector containing the
current limits. The second form sets the limits on the plot to [lo,hi]
.
The third and fourth form set the mode for the limit to auto
and manual
respectively. In auto
mode, FreeMat chooses the range for the axis
automatically. The clim('mode')
form returns the current mode for the axis
(either 'auto'
or 'manual'
).
Switching to manual
mode does not change the limits, it simply allows
you to modify them (and disables the automatic adjustment of the limits
as more objects are added to the plot). Also, if you specify a set of
limits explicitly, the mode is set to manual
Finally, you can specify the handle of an
axis to manipulate instead of using the current one.
Example
Here is an example of usingclim
to change the effective window and
level onto an image. First, the image with default
limits
--> x = repmat(linspace(-1,1),[100,1]); y = x'; --> z = exp(-x.^2-y.^2); --> image(z); --> min(z(:)) ans = 0.1353 --> max(z(:)) ans = 0.9998
which results in
Next, we change the colorscale of the image using the
clim
function
--> image(z); --> clim([0,0.2]);
which results in