FIREPRINT Colormap that increases linearly in lightness (with colors)
Colormap that increases linearly in lightness (such as a pure black to white
map) but incorporates additional colors that help to emphasize the
transitions and hence enhance the perception of the data.
This colormap is designed to be printer-friendly both for color printers as
as well as B&W printers.
Written by Matthias & Stefan Geissbuehler - matthias.geissbuehler@a3.epfl.ch
June 2011
Credit: The idea of the passages over blue&red stems from ImageJ's LUT 'Fire'
Our colormap corrects the color-printout-problems as well as the
non-linearity in the fire-colormap which would make it incompatible
with a B&W printing.
Usage:
cmap = fireprint(n)
All arguments are optional:
n The number of elements (256)
Further on, the following options can be applied
'minColor' The absolute minimum value can have a different color
('none'), 'white','black','lightgray', 'darkgray'
or any RGB value ex: [0 1 0]
'maxColor' The absolute maximum value can have a different color
'invert' (0), 1=invert the whole colormap
Examples:
figure; imagesc(peaks(200));
colormap(fireprint)
colorbar
figure; imagesc(peaks(200));
colormap(fireprint(256,'minColor','black','maxColor',[0 1 0]))
colorbar
figure; imagesc(peaks(200));
colormap(fireprint(256,'invert',1,'minColor','darkgray'))
colorbar