Re: [php-weathermap] [0.96test1]Aggregate functions won't support - for a DS

[Howard Jones <howie@xxxxxxxxxx>]

E. Versaevel wrote:
> Node target (cpu usage in this case) lacks support for - (to ignore 1 value)
>   
D'oh. Didn't think about that. The aggregate stuff was hacked in pretty 
quickly, as you have found.

Thanks for the report (and the others, too!), Erik... I'll try and get 
these together into a test2 release sometime soon. I've added a few new 
features that I wanted while editing maps in the last few days, too.

I'm not sure what the best way to proceed is with the aggregation 
functions - I hadn't considered either --step or -w when I started. I 
suppose there should be an rrd_options variable too, since the 
alternative is to use rrdinfo to try and figure it out for each .rrd, 
which seems pretty ugly. It would also mean that I'd need to actually 
parse the date, to figure out what -w needs to be :-) Maybe that's not a 
bad thing... it would allow for special dates like "1st of this month 
midnight", which can't be done with rrdtool directly, as far as I know.

Howie