> Hi folks, > > I am wondering how to make a graph with the date and time of maximum > value. > Actually I do it this way: > 'DEF:a_temperatur_max=/home/pi/wetter.rrd:aussentmp:MAX‘ \ > 'VDEF:a_temp_max=a_temperatur_max,MAXIMUM' \ > 'GPRINT:a_temp_max:max\: %5.2lf °C'
First of all: that GPRINT is not supposed to work. These should work a) GPRINT:<cdef-name>:<cf>:<format> b) GPRINT:<vdef-name>:<format> this is what you just wrote: c) GPRINT:<vdef-name>:<cf>:<format> <--- bad example There's nothing to consolidate, a VDEF contains a single rate. That's why it should not have a CF. I'm surprised to learn that it works this way instead of generating an error. > > But would like to print the time of the maximum value also. Any hints? a_temp_max contains both the consolidated rate (e.g. your MAX) as well as the time this occurred. Just print it another time, now with %X as formatter. Open https://oss.oetiker.ch/rrdtool/doc/rrdgraph_graph.en.html and find '%X' on that page, there's all you want to know. HTH Alex _______________________________________________ rrd-users mailing list rrd-users@lists.oetiker.ch https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users
