Loaded Image Doesn't Retain Separate Colors

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Amanda
Amanda 2012-8-30
I have an image of a map loaded in MATLAB.
BEFORE the map is loaded into MATLAB the appearance is:
US Continent: Green
Ocean: Blue
Canada: Yellow
AFTER I load the map it is displaying:
Canada and the US as one color BUT I need to separate them by colors.
My code is:
im = double(imread('US.png'))
figure;
colormap summer;
...
Thanks,
Amanda

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Walter Roberson
Walter Roberson 2012-8-30
Try
fig = figure;
ax = axes('Parent', fig);
[im, cmap] = imread('US.png');
if isempty(cmap)
im = im2double(im);
cmap = summer;
end
image(im, 'Parent', ax);
colormap(cmap);
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Amanda
Amanda 2012-8-30
编辑：Amanda 2012-8-30
Walter -- I really appreciate it. Only a few people are plotting and imaging experts.
Image Analyst
Image Analyst 2012-8-31
You're right, though it is the most used toolbox, according to the list at the left.

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