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<HTML>
<HEAD>
<TITLE>VLEN</TITLE>
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<BODY bgcolor="#FFFFFF" fgcolor="#000000">
<P><font size="+3" color="green"><B>VLEN</B></font></P>
<P>
<TABLE border="1" cols="2" frame="box" rules="all" width="572">
<TR>
<TD width="15%" valign="top"><B>Syntax</B>:</TD>
<TD width="85%"><CODE>
vector = VLEN(vector)<br />
vector = VLEN(matrix)</CODE>
</TD></TR>
</table></p>
<p>
The <CODE>VLEN</CODE> function accepts either a vector or a
matrix as argument. It returns the length of each dimension of the argument. If the
argument is a vector, the result is a vector of length one (1). If the argument is a
matrix, the result is a vector of length two (2), with the first element
being the number of rows and the second the number of columns.</P>
<p>
<font size="+1" color="green">Examples</font></P>
<P>
Suppose <code>X</code> is a vector of length 10 and <code>M</code> is a matrix with
5 rows and 12 columns.</p>
<p>
<font color="blue"><pre>
A = VLEN(X) ! number of elements of vector X
B = VLEN(M)
NR = VLEN(M)[1] ! number of rows of matrix M
NC = VLEN(M)[2] ! number of columns of matrix M
</pre></font></p>
<p>
makes vectors <code>A</code> and <code>B</code> with <code>A = {10}</code> and
<code>B = {5;12}</code> and scalars <code>NR</code> and <code>NC</code>. Note that <code>A</code>
is a vector of length one (1).</p>
<p>
<a href="len.htm"><img border="0" src="../../shadow_left.gif">
<font size="+1" color="olive">LEN</font></a><br />
<a href="clen.htm"><img border="0" src="../../shadow_right.gif">
<font size="+1" color="olive">CLEN</font></a>
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