Hello Yannik, thank youz for your quick response, I am new to RRDTOOL but this is a great tool... this is my create command: rrdtool create c:/rrdtool/VSM.rrd --start $epoch_start --step 10 DS:Watt_cur:GAUGE:60:U:U RRA:MAX:0.5:1:60480 DS:Watt_tot:GAUGE:60:U:U RRA:MAX:0.5:1:60480 you are right, I have no RRA:MIN Could you point me to the right create command? I want to store two values 1. the current energy in WATT ( this is a value from 0 to maybe >10000) 2. the current power in kWh ( this is a value which increases each time period) I want to show power and delta energy in the graph ( which should be about 10kWh / 24h)
I want to show a second curevewith the delta of "Zaehlerstand max" and "Zaehlerstand min" and I want to "GPRINT" this value do I need to recreate the database? -- View this message in context: http://rrd-mailinglists.937164.n2.nabble.com/problem-calculating-the-difference-between-MAX-and-MIN-tp7581058p7581062.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
