Adjust display size of image
truesize(fig,[mrows ncols]) adjusts
the display size of an image.
fig is a figure containing
a single image or a single image with a colorbar.
ncols] is a 1-by-2 vector that specifies the requested screen
area (in pixels) that the image should occupy.
truesize(fig) uses the image height and width
[mrows ncols]. This results in the display
having one screen pixel for each image pixel.
If you do not specify a figure,
the current figure.
Fit image to figure window.
Resize image and figure to show image at its 80-by-80 pixel size.