<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
<HTML>
<HEAD>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">
<META NAME="Generator" CONTENT="MS Exchange Server version 6.5.7638.1">
<TITLE>r.reclass null values</TITLE>
</HEAD>
<BODY>
<!-- Converted from text/plain format -->
<P><FONT SIZE=2>Hi,<BR>
<BR>
I want to use r.cost to calculate accessibility surfaces based on an existing road network. In my cost surface, I want to associate a speed limit = 6kmh to every cell outside the network, which involves reclassifying all NULL values to 6. However. <r.reclass> doesn't allow me to reclass the nulls. The following message appears:<BR>
<BR>
WARNING: can't have null on the left-hand side of the rule<BR>
illegal reclass rule. ignored<BR>
<BR>
Any clues on how to do this? I couldn't find any offer function which would do the trick.<BR>
<BR>
Apologize if this is a "too simple" kind of question...<BR>
Thanks in advance,<BR>
António</FONT>
</P>
</BODY>
</HTML>