Programmer Guide/Command Reference/EVAL/ncol: Difference between revisions
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;Result: The result of this function is the number of columns of <var>x</var>. If <var>x</var> is a scalar or a vector, the result is '''1'''. The function '''cols(''x'')''' can be used as alias for '''ncol'''. | ;Result: The result of this function is the number of columns of <var>x</var>. If <var>x</var> is a scalar or a vector, the result is '''1'''. The function '''cols(''x'')''' can be used as alias for '''ncol'''. | ||
;Example:<pre> | ;Example: | ||
<pre> | |||
#matrix := eval init(100,10,0) | #matrix := eval init(100,10,0) | ||
conlog 'number of columns of $#matrix: $(eval ncol($#matrix)' | conlog 'number of columns of $#matrix: $(eval ncol($#matrix)' | ||
// the attribute !ncol returns the same value: | |||
conlog 'number of columns of $#matrix: $#matrix[!ncol]' | |||
</pre> | </pre> | ||
Revision as of 10:07, 4 April 2011
Returns the number of columns of the argument x.
- Usage
ncol(x)
- Result
- The result of this function is the number of columns of x. If x is a scalar or a vector, the result is 1. The function cols(x) can be used as alias for ncol.
- Example
#matrix := eval init(100,10,0) conlog 'number of columns of $#matrix: $(eval ncol($#matrix)' // the attribute !ncol returns the same value: conlog 'number of columns of $#matrix: $#matrix[!ncol]'
- See also
- nrow
