Thread Subject: colormap

Hello,

Does anyone know how can I get colormap index value for a particular set of coordinates from an image...I can see these values using colormapeditor, but is there any command such that I can get it into the matlab output as a value.

Do let me know...

Thanks,

Matt

Get the color limits with

CAXIS

and then use INTERP1 to get the values.

Carlos

Thanks Carlos....trying it right now...

Matt

Matt:
Try this:
(You may have to fix line breaks introduced by the newsreader if there
are any errors.)

monochromeImage = imread('cameraman.tif');
imshow(monochromeImage);
% Apply a colormap
colormap('jet');
% Let's get the intensity at position (50,100);
grayLevel = monochromeImage(50,100)
% Retrieve the color map that is being used for the image.
cm = colormap
% Get the color corresponding to that gray level.
theColor = cm(grayLevel, :)
message = sprintf('The color for gray level %d is [%.2f, %.2f, %.
2f]', ...
grayLevel, theColor(1), theColor(2), theColor(3));
msgbox(message);