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spy

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Visualize sparsity pattern of matrix.

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Syntax

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spy(S)

spy(S, LineSpec)

spy(S, LineSpec, MarkerSize)

Input argument

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S

matrix: sparse or dense.

LineSpec

Line style, marker, and/or color: character vector or scalar string.

MarkerSize

positive integer scalar value.

Description

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spy(S) plots the sparsity pattern of the sparse matrix S.

Examples

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f = figure();
rng('default');
S = sparse((rand(1, 10) + 1) * 100, (rand(1, 10) + 1) * 100 , (rand(1, 10) + 1) * 10);
spy(S);

f = figure();
rng('default');
S = sparse((rand(1, 10) + 1) * 100, (rand(1, 10) + 1) * 100 , (rand(1, 10) + 1) * 100);
spy(S, 45);

f = figure();
spy();

See also

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sparse, plot.

History

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Version	Description
1.0.0	initial version

Author

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Allan CORNET