LinuxQuestions.org - Issue with rrdtool not displaying graph?

I have rrdtool RPM installed on my new CentOS 5.2.I have designed a HTML page where the rrdtool create graph into.

Code:

<html>

    <head>

        <title>Monitoring the Servers</title>

        <meta http-equiv="refresh" content="60" />

    </head>

    <body>

        <img src="imgs/13000.png"/><br/>

        <img src="imgs/13200.png"/><br/>

        <img src="imgs/86400.png"/><br/>

        <img src="imgs/86500.png"/><br/>

        <img src="imgs/12000.png"/><br/>

        <img src="imgs/32000.png"/><br/>

        <img src="imgs/46400.png"/><br/>

        <img src="imgs/36400.png"/><br/>

</html>

Small snippet of code from where its getting filled from:

Code:

#!/bin/bash



cd /monitor/gra



END=`rrdtool last comma1.rrd`

HEIGHT=300

WIDTH=1150



#for x in 13000 86400 864000; do

for x in 13000 86400; do



START=$((${END}-${x}))



TYPE=AVERAGE

if [ $x = '13000' ]; then TYPE=LAST; fi



DOCROOT='/var/www/html'



echo $TYPE $START $END

rrdtool graph $DOCROOT/imgs/commaAvg_web_$x.png \

    -a PNG \

    -r \

    -l 0 \

    -h ${HEIGHT} \

    -w ${WIDTH} \

    -s ${START} \

    -e ${END} \

    -t "1 Min Load Average For All Web Servers" \

    DEF:ws4=Comma1:$TYPE \

    DEF:ws6=Comma2.rrd:CommaAvg:$TYPE \

    DEF:ws7=Comma3.rrd:CommaAvg:$TYPE \

    DEF:ws8=Comma4.rrd:CommaAvg:$TYPE \

    ..

    ..

    ..

    LINE1:ws4#0000CC:"Comma1" \

    LINE1:ws6#00CCCC:"Comma2" \

    LINE1:ws7#CC00CC:"Comma3" \

    LINE1:ws8#00CC00:"tvl10web08" \

    ..

But its not displaying the graph but just displays X and Y axis.
any suggestions?