<html><body><div style="color:#000; background-color:#fff; font-family:tahoma, new york, times, serif;font-size:14pt"><div><pre style="font-size: 16px; "><font class="Apple-style-span" face="arial, helvetica, sans-serif">Hello again dear experts,</font></pre><pre style="font-size: 16px; "><span class="Apple-style-span" style="font-family: arial, helvetica, sans-serif; "><br></span></pre><pre style="font-size: 16px; "><span class="Apple-style-span" style="font-family: arial, helvetica, sans-serif; ">I would like to use the functionality of CDEF and PREDICT, like this:</span><br></pre><pre><font class="Apple-style-span" face="arial, helvetica, sans-serif">rrdtool.exe graph test.png DEF:value=mydb.rrd:count:AVERAGE CDEF:predict=600,-2,300,value,PREDICT LINE1:var#FF0000<br></font></pre><pre><font class="Apple-style-span" face="arial, helvetica, sans-serif"><br></font></pre><pre><font class="Apple-style-span" face="arial, helvetica, sans-serif">but I get this
error here:</font></pre><pre><font class="Apple-style-span" face="arial, helvetica, sans-serif"><br></font></pre><pre><font class="Apple-style-span" face="arial, helvetica, sans-serif">ERROR: invalid rpn expression in: 600,-2,300,value,PREDICT<br></font></pre><pre><font class="Apple-style-span" face="arial, helvetica, sans-serif"><br></font></pre><pre><span class="Apple-style-span" style="font-family: arial, helvetica, sans-serif; ">Why would this be? I am using RRDTool 1.3.30 on Windows. Do I need to use RRDTool version 1.4? If so, is there a Windows Binary I can download?</span><br></pre><pre><span class="Apple-style-span" style="font-family: arial, helvetica, sans-serif; "><br></span></pre><pre><span class="Apple-style-span" style="font-family: arial, helvetica, sans-serif; ">With kind regards, and thank you for your attention,</span></pre><pre><span class="Apple-style-span" style="font-family: arial, helvetica, sans-serif;
"><br></span></pre><pre><span class="Apple-style-span" style="font-family: arial, helvetica, sans-serif; "><br></span></pre><pre><span class="Apple-style-span" style="font-family: arial, helvetica, sans-serif; ">Michel</span></pre></div></div></body></html>