Sorry for such a newbie question, but the thing is, I am using Cacti, and I want to make automatic reports about traffic-type graphs, that include two values from graphs - Inbound Max and Outbound Max. I just don't understand how to get just those two values out of RRD. It would be easier for me, to make OCR trace on graph image, to extract those numbers :D /usr/local/bin/rrdtool graph - \ --imgformat=PNG \ --start=1292836870 \ --end=1295508070 \ --title='Example graph title' \ --rigid \ --base=1000 \ --height=120 \ --width=500 \ --alt-autoscale \ COMMENT:"From 2010/12/20 11\:21\:10 To 2011/01/20 09\:21\:10\c" \ COMMENT:" \n" \ --vertical-label='Bits per second' \ --slope-mode \ --font TITLE:12: \ --font AXIS:8: \ --font LEGEND:10: \ --font UNIT:8: \ DEF:a="/usr/local/share/cacti/rra/inbound_data.rrd":snmp_oid:AVERAGE \ DEF:b="/usr/local/share/cacti/rra/outbound_data.rrd":snmp_oid:AVERAGE \ CDEF:cdefa=a,8,* \ CDEF:cdefe=b,8,* \ AREA:cdefa#7EE600FF:"IN" \ GPRINT:cdefa:LAST:" Current\:%8.2lf %s" \ GPRINT:cdefa:AVERAGE:"Average\:%8.2lf %s" \ GPRINT:cdefa:MAX:"Maximum\:%8.2lf %s\n" \ LINE1:cdefe#4668E4FF:"OUT" \ GPRINT:cdefe:LAST:"Current\:%8.2lf %s" \ GPRINT:cdefe:AVERAGE:"Average\:%8.2lf %s" \ GPRINT:cdefe:MAX:"Maximum\:%8.2lf %s\n" Maybe, there is a way to do that with FETCH or something, but I need only those values that are GPRINT in graph syntax above. The last resort, as I understand, is to FETCH data from both RRD's, and determine largest number for each of RRD's, compare them and output only one, which is largest (needed for my report calculations).
PS: It would be great, if such a function could be pre-built in rrdtool graph (reading actual data from image) and maybe, achieved using image headers or EXIF (or other image/file info storage), reading both of them is easy. -- View this message in context: http://rrd-mailinglists.937164.n2.nabble.com/How-to-get-LAST-AVG-MAX-data-that-are-in-graph-legend-in-text-string-format-tp5943307p5943307.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
