[rrd-users] rpn expressions without DEF or CDEF Variables are nor supported

[Steve Shipway]

DEF:4=/var/rrd/data/FA0000000C56E5_5.rrd:pio:AVERAGE 

CDEF:pump=4,0,GT,INF,0,IF AREA:pump#99ffff:"Pumpe" 

 

You are attempting to redefine the value of 4, so things are getting a bit
confused.  When you use a DEF to define a new variable, you cannot call this
variable ‘4’ since that causes confusion.  This will work:

 

DEF:xxxx=/var/rrd/data/FA0000000C56E5_5.rrd:pio:AVERAGE 

CDEF:pump=xxxx,0,GT,INF,0,IF AREA:pump#99ffff:"Pumpe" 

 

But if you use ‘4’ instead of ‘xxxx’ then the DEF seems to work (it should
really produce a syntax error for a disallowed DEF name!) and then the CDEF
fails because it thinks the ‘4’ is a number, not the previous DEF, and so
there are no variables in the RPN.

 

I would say this is a minor bug in RRDTool (which version are you using?) in
that the syntax checker choked on the CDEF rather than the DEF, but really
it is a user error as the DEF is certainly wrong J

 

Steve

 

  _____  

Steve Shipway

ITS Unix Services Design Lead

University of Auckland, New Zealand

Floor 1, 58 Symonds Street, Auckland

Phone: +64 (0)9 3737599 ext 86487

DDI: +64 (0)9 924 6487

Mobile: +64 (0)21 753 189

Email:  <mailto:s.shipway at auckland.ac.nz> s.shipway at auckland.ac.nz

P Please consider the environment before printing this e-mail 

 

 

From: rrd-users-bounces+s.shipway=auckland.ac.nz at lists.oetiker.ch
[mailto:rrd-users-bounces+s.shipway=auckland.ac.nz at lists.oetiker.ch] On
Behalf Of Marc
Sent: Monday, 25 July 2011 9:05 a.m.
To: rrd-users at lists.oetiker.ch
Subject: [rrd-users] rpn expressions without DEF or CDEF Variables are nor
supported

 

 

Hello

I am getting an “rpn expressions without DEF or CDEF Variables are nor
supported”

I located the error in one of the 2 red lines but could not find out how to
fix it.

Can anybody gif me some helping hands?

 

/usr/bin/rrdtool graph /var/www/owserver2/brenner_week.png --start -1week 

DEF:1=/var/rrd/data/A6000801CA47C7.rrd:tmp:AVERAGE 

LINE1:1#FF9900:"Vorlauf               " 

DEF:max1=/var/rrd/data/A6000801CA47C7.rrd:tmp:MAX 

DEF:min1=/var/rrd/data/A6000801CA47C7.rrd:tmp:MIN 

VDEF:vlinemin1=min1,MINIMUM 

VDEF:vlinemax1=max1,MAXIMUM 

GPRINT:max1:MAX:"Maximum.\: %4.1lf %SC  "   

GPRINT:min1:MIN:"Minimum.\: %4.1lf %SC\l" 

 

DEF:2=/var/rrd/data/67000801CA1064.rrd:tmp:AVERAGE 

LINE1:2#48C4EC:"Rücklauf             " 

DEF:max2=/var/rrd/data/67000801CA1064.rrd:tmp:MAX 

DEF:min2=/var/rrd/data/67000801CA1064.rrd:tmp:MIN 

VDEF:vlinemin2=min2,MINIMUM 

VDEF:vlinemax2=max2,MAXIMUM 

GPRINT:max2:MAX:"Maximum.\: %4.1lf %SC  "   

GPRINT:min2:MIN:"Minimum.\: %4.1lf %SC\l"

 

DEF:3=/var/rrd/data/7A00080172AB15.rrd:tmp:AVERAGE 

LINE1:3#008000:"Aussentemperatur      " 

DEF:max3=/var/rrd/data/7A00080172AB15.rrd:tmp:MAX 

DEF:min3=/var/rrd/data/7A00080172AB15.rrd:tmp:MIN 

VDEF:vlinemin3=min3,MINIMUM 

VDEF:vlinemax3=max3,MAXIMUM 

GPRINT:max3:MAX:"Maximum.\: %4.1lf %SC  "   

GPRINT:min3:MIN:"Minimum.\: %4.1lf %SC\l" 

 

DEF:4=/var/rrd/data/FA0000000C56E5_5.rrd:pio:AVERAGE 

CDEF:pump=4,0,GT,INF,0,IF AREA:pump#99ffff:"Pumpe" 

 

-h 360 -w 620 -y1:2 --color GRID#dddddd --color MGRID#aaaaaa --color
CANVAS#eeeeee HRULE:60#ababab 

 

 


Grüße/Regads

Marc Tobien

image004      

   

 

Marc Tobien 

( Direct: +49 4202 71079 |image005   Mobile: +49 15142231047  |  image006
Email: Marc at Tobien.net <mailto:Marc.Tobien at eds.com>  

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