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MatrixDecomposition

Symbols

  • CMRDecomposition
  • CRDecomposition
  • CWBDecomposition
  • Submatrix
  • UVTransposeMatrix
  • UVTranspose
LawrenceWinkler`MatrixDecomposition`
Submatrix
​
Submatrix[
mat
,
rows
,
columns
] extract the submatrix of
mat
defined by the subset of rows and columns
​
Details and Options

Examples  
(1)
Basic Examples  
(1)
In[1]:=
A1=Partition[Table[i,{i,12}],4];​​A1//MatrixForm
Out[1]//MatrixForm=
1
2
3
4
5
6
7
8
9
10
11
12
In[2]:=
Submatrix
[A1,{1,3},{1,2}]//MatrixForm
Out[2]//MatrixForm=

1
2
9
10

In[3]:=
Submatrix
[A1,{1,3},{1,4}]//MatrixForm
Out[3]//MatrixForm=

1
4
9
12

""

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