[rrd-users] Re: Fill color for unknown data

[Serge Maandag]

I'm not sure I totally understand what you're trying to make it look like, but can't you just say:

    "DEF:avgtemp=$RRDFile:HourAvgAirTemp:AVERAGE",
    "CDEF:unknownpos=avgtemp,UN,INF,UNKN,IF",
    "CDEF:unknownneg=avgtemp,UN,NEGINF,UNKN,IF",
    "AREA:unknownpos#000000",
    "AREA:unknownneg#000000",
    "LINE1:avgtemp#FF0000:Average\\l",

Serge.

-----Original Message-----
From: Rhett Hooper [mailto:rhett.hooper at usurf.usu.edu]
Sent: Wednesday, July 02, 2003 11:27 PM
To: rrd-users at list.ee.ethz.ch
Subject: [rrd-users] Fill color for unknown data
Importance: Low


Hello list,

I have written a Perl script that uses rrdtool to graph weather station
data, (visible at http://gifts.sdl.usu.edu/blo/weather/) and I am having
some problems with a couple of the graphs.  (See
http://gifts.sdl.usu.edu/blo/weather/temperature-m.html#temp_1year)

We lost some data around the middle of last December, and our data only
goes back for a little under 3 years.  As you can see in the above
graphs, I have tried blacking out the unknown data so that it is obvious
that data is missing.  The problem is that when the values drop below
zero so that negative numbers show up on the y-axis, the blacked out
sections are exactly opposite of what I expected.

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