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<HTML>
<HEAD>
<TITLE>Write a character string</TITLE>
</HEAD>
<BODY BGCOLOR="#FFFFFF" TEXT="#000000">
<P><font size="+3" color="green"><B>Write a character string</B></font></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%" valign="top"><CODE>
WRITE\TEXT file txtvar<br />
</TD></TR>
<TR>
<TD width="15%" valign="top"><B>Qualifiers</B>:</TD>
<TD width="85%" valign="top"><CODE>
\APPEND</CODE>
</TD></TR>
<TR>
<TD width="15%" valign="top"><B>Examples</B>:</TD>
<TD width="85%" valign="top"><CODE>
WRITE\TEXT FILE.DAT T<br />
WRITE\TEXT\APPEND FILE.DAT T
</TD></TR>
</TABLE>
<P>
The <CODE>WRITE\TEXT</CODE> command writes writes a
character string to a file. If <CODE>\APPEND</CODE> is used, and
if the output file already exists, the string will be appended onto the end of the file.</P>
<P>
<font size="+1" color="green">Example 1</font></p>
<p>
The values of scalar variables can be written by using the
<a href="../Functions/StringManipulation/rchar.htm"><CODE>RCHAR</CODE></a> function
and the <a href="../Operators/append.htm">append</a> operator, <code>//</code>. For example:</p>
<p>
<font color="blue"><pre>
WRITE\TEXT FILE.EXT `The value of A is '//RCHAR(A)
WRITE\TEXT FILE.EXT `The value of X['//RCHAR(J)//`] = '//RCHAR(X[J])
</pre></font></p>
<P>
<font size="+1" color="green">Example 2</font></p>
<p>
Suppose you want to write a header line to a file and then write some
data stored in vectors to that file. For example:</p>
<p>
<font color="blue"><pre>
WRITE\TEXT FILE.DAT `This is a header line'
WRITE\APPEND FILE.DAT X Y Z
</pre></font></p>
<p>
Suppose <CODE>X</CODE> is a vector, <CODE>X = [ 1.1; 2.2; 3.3; 4.4 ],</CODE>
and you want to write the values of <CODE>X</CODE> to a file, with some text.
For example:</p>
<p>
<font color="blue"><pre>
DO J = 1, LEN(X)
WRITE\TEXT\APPEND FILE.DAT `X['//RCHAR(J)//`] = '//RCHAR(X[J])
ENDDO
</pre></font></p>
<P>
<a href="matrix.htm"><img src="../shadow_left.gif">
<font size="+1" color="olive">Write a matrix</font></a></P>
</BODY>
</HTML>
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