ArrayPlot
 Usage
Notes
 Further Examples
Here is a  matrix.
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This plots  .
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This plots  with frame ticks added. Notice that the row indices run from top to bottom, and column indices from left to right.
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By default, entries are plotted using GrayLevel. The entry with largest absolute value is black and the smallest is white. This plots a  matrix, with entry values varying from  to  .
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This plots a cellular automaton.
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This plots a sparse matrix in black and white.
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