Identity matrix: Difference between revisions
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{{Primitive}} |
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Given a positive integer argument ''n'', '''identity matrix''' returns a ''n''×''n'' matrix with ones in the main diagonal and zeros elsewhere.<syntaxhighlight> |
Given a positive integer argument ''n'', '''identity matrix''' returns a ''n''×''n'' matrix with ones in the main diagonal and zeros elsewhere.<syntaxhighlight lang=text> |
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=5 |
=5 |
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(1 0 0 0 0 |
(1 0 0 0 0 |
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=0 |
=0 |
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() |
() |
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</syntaxhighlight>This primitive is not available in all dialects, It can be implemented in K as:<syntaxhighlight> |
</syntaxhighlight>This primitive is not available in all dialects, It can be implemented in K as:<syntaxhighlight lang=text> |
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im:{(2#x)#1,&x} |
im:{(2#x)#1,&x} |
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im[4] |
im[4] |
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0 0 1 0 |
0 0 1 0 |
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0 0 0 1) |
0 0 0 1) |
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</syntaxhighlight> |
</syntaxhighlight> |
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Revision as of 01:03, 7 July 2021
Identity matrix
{{{1}}}
Given a positive integer argument n, identity matrix returns a n×n matrix with ones in the main diagonal and zeros elsewhere.
=5
(1 0 0 0 0
0 1 0 0 0
0 0 1 0 0
0 0 0 1 0
0 0 0 0 1)
=1
,,1
=0
()
This primitive is not available in all dialects, It can be implemented in K as:
im:{(2#x)#1,&x}
im[4]
(1 0 0 0
0 1 0 0
0 0 1 0
0 0 0 1)