间谍

Visualize sparsity pattern of matrix

Syntax

间谍

间谍（S,LineSpec)

间谍（___,MarkerSize)

Description

间谍（S)plots the sparsity pattern of matrixS. Nonzero values are colored while zero values are white. The plot displays the number of nonzeros in the matrix,nz = nnz(S).

example

间谍（S,LineSpec)additionally specifiesLineSpec给出标记符号和颜色以在绘图中使用。例如，间谍（A,'r*')使用非安利斯的红色星号。

example

间谍（___,MarkerSize)specifiesMarkerSizeto give the size of the markers using either of the previous input argument combinations.

Examples

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Plot Sparsity Pattern

打开直播脚本

绘制咖啡座富勒测地圆顶的连接图的60×60稀疏邻接矩阵。该基质还代表碳-60分子和足球。

B = bucky; spy(B)

Figure contains an axes object. The axes object contains an object of type line.

Specify the color and marker.

间谍（B,' ro')

Figure contains an axes object. The axes object contains an object of type line.

Also specify the marker size.

间谍（B,' ro',2)

Figure contains an axes object. The axes object contains an object of type line.

Input Arguments

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`S`—Input matrix
matrix

Input matrix.Sis typically a sparse matrix, but can be either full or sparse.

`MarkerSize`—Size of markers
正整数标量

Size of markers, specified as a positive integer scalar.

Example:间谍（A,3)uses markers of size 3.

`LineSpec`—Marker symbol and color
character vector|string

Marker symbol and color, specified as a character vector or string containing symbols. The symbols can appear in any order. You do not need to specify both characteristics (marker and color). For example, if you omit the color and specify the marker, then the plot uses the default colors but uses the specified markers.

Example:'or'uses red circle markers.

Marker	Description	Resulting Marker
`'o'`	Circle
`'+'`	加号
`'*'`	Asterisk
`'.'`	观点
`'x'`	叉
`'_'`	Horizontal line
`'\|'`	垂线
`'s'`	Square
`'d'`	Diamond
`'^'`	向上指向三角形
`'v'`	Downward-pointing triangle
`'>'`	Right-pointing triangle
`'<'`	Left-pointing triangle
`'p'`	五角星
`'h'`	Hexagram