Hi, I am struggling on a problem calculating the sum of a DS for the given period. I have a rrd: rrdtool create PV.rrd --start now --step 10 DS:PVWatt:GAUGE:60:U:U RRA:MAX:0.5:1:60480
the PVWatt has values from 0 to 5000 I want to Print to total amount of PVWatt for the given time period (24h) My Graph looks like this: c:/Programme/rrdtool/rrdtool.exe graph c:/wwwpics/PV.png --start noon-12h --end noon+12h ^ --title Photovoltaikanlage --width=600 --height=300 --alt-y-grid ^ --upper-limit 5000 --lower-limit 0 --rigid ^ DEF:Watt=PV.rrd:PVWatt:MAX LINE1:Watt#00FF00:Watt_cur ^ VDEF:Wmin=Watt,MINIMUM ^ VDEF:Wmax=Watt,MAXIMUM ^ VDEF:Wavg=Watt,AVERAGE ^ CDEF:Wmod=Watt,POP,Wmax,Wmin,- ^ VDEF:Wtt=Wmod,LAST ^ VDEF:Wlast=Wmod,LAST ^ VDEF:first=Watt,FIRST ^ COMMENT:" \l" ^ COMMENT:"MAX Leistung \:" GPRINT:Wmax:"%%6.1lf Wp" ^ COMMENT:" \l" ^ COMMENT:"Start \:" GPRINT:first:"%%6.1lf Wp" GPRINT:first:"%%c":strftime ^ COMMENT:" \l" ^ COMMENT:"Total Leistung\:" GPRINT:Wtt:"%%6.1lf Wh" GPRINT:Wlast:"%%c":strftime ^ COMMENT:" \l" I have tried several calculations for Wmod/Wtt but all results are wrong. I don't know how RRD is calculating the sum of PVWatt? can someone light me up? Thanks Stefan -- View this message in context: http://rrd-mailinglists.937164.n2.nabble.com/how-to-calculate-the-sum-of-a-DS-tp7581099.html Sent from the RRDtool Users Mailinglist mailing list archive at Nabble.com. _______________________________________________ rrd-users mailing list [email protected] https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users
