%% Display Image of Matrix Data
% Create matrix C. Display an image of the data in C. Add a colorbar to the graph to show the current colormap.

C = [0 2 4 6; 8 10 12 14; 16 18 20 22];
image(C)
colorbar

%
% By default, the CDataMapping property for the image is set to 'direct' so image interprets values in C as indices into the colormap. For example, the bottom right pixel corresponding to the last element in C, 22, uses the 22nd color of the colormap.
% Scale the values to the full range of the current colormap by setting the CDataMapping property to 'scaled' when creating the image.

image(C,'CDataMapping','scaled')
colorbar

% Alternatively, you can use the imagesc function to scale the values instead of using image(C,'CDataMapping','scaled'). For example, use imagesc(C).
% Copyright 2015 The MathWorks, Inc.