Hi, I am monitoring my heating by a raspberry-pi using rrd data base: - TMP_V = flow temperature - TMP_R = return temperature - WOHNZ = indoor temperature - AUSEN = outdoor temperature - PUMPE = circulating pump (running or not)
The graph wil be drawn by perl script using RRDs::graph (librrds-perl 1.4.7-2+rpi1): ################################################################ RRDs::graph($tmpfile, @opts, "DEF:TMP_V=/home/pi/heizung.rrd:hzg_v:AVERAGE", "DEF:TMP_R=/home/pi/heizung.rrd:hzg_r:AVERAGE", "DEF:WOHNZ=/home/pi/heizung.rrd:wohnz:AVERAGE", "DEF:AUSEN=/home/pi/heizung.rrd:ausen:AVERAGE", "DEF:PUMPE=/home/pi/heizung.rrd:pumpe:AVERAGE", "CDEF:OnOff=PUMPE,FLOOR,80,*", "AREA:OnOff#F0EFEF:Umwaelzpumpe ", "LINE1:OnOff#424242:", "LINE2:0#000000:", "GPRINT:PUMPE:LAST:akt.\\:%5.1lf", "GPRINT:PUMPE:MIN:min\\:%5.1lf", "GPRINT:PUMPE:MAX:max\\:%5.1lf", "GPRINT:PUMPE:AVERAGE:mittel\\:%5.1lf\\n", "LINE2:TMP_V#FF0000:Vorlauftemp. ", "GPRINT:TMP_V:LAST:akt.\\:%5.1lf", "GPRINT:TMP_V:MIN:min\\:%5.1lf", "GPRINT:TMP_V:MAX:max\\:%5.1lf", "GPRINT:TMP_V:AVERAGE:mittel\\:%5.1lf\\n", "LINE2:TMP_R#0000FF:Ruecklauftemp.", "GPRINT:TMP_R:LAST:akt.\\:%5.1lf", "GPRINT:TMP_R:MIN:min\\:%5.1lf", "GPRINT:TMP_R:MAX:max\\:%5.1lf", "GPRINT:TMP_R:AVERAGE:mittel\\:%5.1lf\\n", "LINE2:WOHNZ#00FF00:Wohnzimmer ", "GPRINT:WOHNZ:LAST:akt.\\:%5.1lf", "GPRINT:WOHNZ:MIN:min\\:%5.1lf", "GPRINT:WOHNZ:MAX:max\\:%5.1lf", "GPRINT:WOHNZ:AVERAGE:mittel\\:%5.1lf\\n", "LINE2:AUSEN#424242:Aussentemp. ", "GPRINT:AUSEN:LAST:akt.\\:%5.1lf", "GPRINT:AUSEN:MIN:min\\:%5.1lf", "GPRINT:AUSEN:MAX:max\\:%5.1lf", "GPRINT:AUSEN:AVERAGE:mittel\\:%5.1lf\\n" ); ################################################################ All looks fine as lpng as the outdoor temperatrure is above 0 degree. Otherwise the pump graph ends at the O line, it looks ugly! My idea: drawing first something like this: ################################################################ ... "DEF:Off=/home/pi/heizung.rrd:ausen:MIN", "AREA:Off#F0EFEF", "LINE1:Off#424242:", ... ################################################################ but - my - RRDs::graph does not exept the line "DEF:Off=/home/pi/heizung.rrd:ausen:MIN", !! Anyone an idea? Sorry English is not my native language and school is long ago -- Gruß aus der Stadt der CeBIT Greeting from the city of CeBIT Jochen _______________________________________________ rrd-users mailing list rrd-users@lists.oetiker.ch https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users
