Iden - Revision history

Nathaniel at 15:59, 29 September 2014

2014-09-29T15:59:15Z

← Older revision		Revision as of 15:59, 29 September 2014
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	\|cat=[[List of functions#Helper_functions\|Helper functions]]		\|cat=[[List of functions#Helper_functions\|Helper functions]]
	\|upd=November 28, 2012		\|upd=November 28, 2012
	\|v=1.00		\|v=0.50
	\|helper=1}}		\|helper=1}}
	<tt>'''iden'''</tt> is a [[List of functions\|function]] that computes the identity matrix of the desired size, which is either full or sparse.		<tt>'''iden'''</tt> is a [[List of functions\|function]] that computes the identity matrix of the desired size, which is either full or sparse.

Nathaniel at 15:53, 29 September 2014

2014-09-29T15:53:29Z

← Older revision		Revision as of 15:53, 29 September 2014
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	\|name=iden		\|name=iden
	\|desc=Computes a sparse or full identity matrix		\|desc=Computes a sparse or full identity matrix
			\|cat=[[List of functions#Helper_functions\|Helper functions]]
	\|upd=November 28, 2012		\|upd=November 28, 2012
	\|v=1.00		\|v=1.00
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	==Examples==		==Examples==
	Full and sparse versions of the 2-by-2 identity matrix:		Full and sparse versions of the 2-by-2 identity matrix:
	<~~pre~~>		<syntaxhighlight>
	>> iden(2,0)		>> iden(2,0)

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	(1,1) 1		(1,1) 1
	(2,2) 1		(2,2) 1
	</~~pre~~>		</syntaxhighlight>

	==Notes==		==Notes==
	This function is only meant to simplify code within other functions. If you always want either the full or the sparse identity matrix, just use MATLAB's built-in [http://www.mathworks.com/help/matlab/ref/eye.html eye] or [http://www.mathworks.com/help/matlab/ref/speye.html speye] function.		This function is only meant to simplify code within other functions. If you always want either the full or the sparse identity matrix, just use MATLAB's built-in [http://www.mathworks.com/help/matlab/ref/eye.html eye] or [http://www.mathworks.com/help/matlab/ref/speye.html speye] function.

			{{SourceCode\|name=iden\|helper=1}}

Nathaniel: Created page with "{{Function |name=iden |desc=Computes a sparse or full identity matrix |upd=November 28, 2012 |v=1.00 |helper=1}} `'''iden'''` is a function that c..."

2012-11-28T19:04:05Z

Created page with "{{Function |name=iden |desc=Computes a sparse or full identity matrix |upd=November 28, 2012 |v=1.00 |helper=1}} <tt>'''iden'''</tt> is a function that c..."

New page

{{Function
|name=iden
|desc=Computes a sparse or full identity matrix
|upd=November 28, 2012
|v=1.00
|helper=1}}
<tt>'''iden'''</tt> is a [[List of functions|function]] that computes the identity matrix of the desired size, which is either full or sparse.

==Syntax==
* <tt>ID = iden(DIM,SP)</tt>

==Argument descriptions==
* <tt>DIM</tt>: The number of rows (or equivalently, columns) that <tt>ID</tt> will have.
* <tt>SP</tt>: A flag (either 1 or 0) indicating whether <tt>ID</tt> should or should not be sparse.

==Examples==
Full and sparse versions of the 2-by-2 identity matrix:
<pre>
>> iden(2,0)

ans =

1 0
0 1

>> iden(2,1)

ans =

(1,1) 1
(2,2) 1
</pre>

==Notes==
This function is only meant to simplify code within other functions. If you always want either the full or the sparse identity matrix, just use MATLAB's built-in [http://www.mathworks.com/help/matlab/ref/eye.html eye] or [http://www.mathworks.com/help/matlab/ref/speye.html speye] function.

Iden - Revision history

Nathaniel at 15:59, 29 September 2014

Nathaniel at 15:53, 29 September 2014

Nathaniel: Created page with "{{Function |name=iden |desc=Computes a sparse or full identity matrix |upd=November 28, 2012 |v=1.00 |helper=1}} '''iden''' is a function that c..."

Nathaniel: Created page with "{{Function |name=iden |desc=Computes a sparse or full identity matrix |upd=November 28, 2012 |v=1.00 |helper=1}} `'''iden'''` is a function that c..."