[rrd-users] Can this kind of chart be drawn with RRDTool ?

[Jean-Yves Avenard]

Hi

Making progress on the matter.

http://htpc.avenard.org/power/?small=1&graph=1&view=day&date=19/02/2010&hour=23&minute=59&plot=total,ext

I'm trying to draw a blue area between sunrise and sunset...

                                  "VRULE:$sunrise#32348e",
                                  "VRULE:$sunset#32348e",
                                  "VRULE:$sunnoon#000000",
                                  "VRULE:$dawn#272727",
                                  "VRULE:$dusk#272727",
                                  "DEF:tt=blah.rrd:total:AVERAGE",

"CDEF:day=tt,POP,UNKN,INF,TIME,$sunrise,$sunset,LIMIT,UN,IF",
                                  "AREA:day#32348e"

I draw 5 vertical lines, at dawn, sunrise, sunset, dusk and solar noon
(to fullfill my curiosity)..

As I can't create a CDEF from a RpN expression without using a
reference to a DEF or CDEF, so I read a dummy RRD that I know as data
continously. In the RPN expression I remove the date, and check if
TIME is between sunrise and sunset. If yes, I push INF back on the
stack ; which should plot the whole screen.

But it doesn't :)

What did I miss?

It's pretty much:
IF (TIME > sunrise && TIME < sunset) then plot INF else plot UNKN


Thanks