[rrd-users] Creating graphs with colored horizontal bands as a background

John Novak oldtopos at novacell.com
Sun Dec 21 19:17:27 CET 2008

I added hard-coded horizontal areas to the graph.  I do not have the
statements readily available.

I was unable to get alpha working properly and the resulting rrdgraph
statement had the actual data items obfuscated by the bands.  It was hard
for a person looking at the graph generation statements to quickly pick out
the "real data", if you will.

I also tried using horizontal rules, which certainly were properly placed. 
However, the rules alone provided insufficient visual clues wrt where the
three areas are on the resulting graphs.
The nice thing about hrules is that they're clearly differentiated from the

The graphs are displayed on large monitors in a NOC and viewers can be 20 or
more feet from the screens.  The horizontal bands are an attempt to provide
a quick visual clue that augments threshold alerts from a system such as

Alex van den Bogaerdt-5 wrote:
> What did you try, and what did you not like about it? 
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