Hi, from a weather station I read wind vector data (velocity & direction) every minute.
I want store it in a rrd file to show it with rrdgraph: for last week: per minute for last month: mean values per 10 minute for last year: mean values per hour The aggregate functions AVERAGE is not useful for the wind direction alone. My idea: make 6 data sources: velocity_min, direction_min velocity_10min, direction_10min velocity_h, direction_h And after every update velocity_min,direction_min with an external program: ---- read the last 10 velocity_min, direction_min, calculate the vectorially average, update velocity_10min, direction_10min ---- read the last 6 velocity_10min, direction_10min, calculate the vectorially average, update velocity_h, direction_h ---- Is there a better solution possible? Peter -- View this message in context: http://rrd-mailinglists.937164.n2.nabble.com/How-store-wind-vector-data-tp7581910.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
