[drraw-users] Stddevs and averages of multiple rrd source files

[Mark Noworolski]

I have multiple rrds, say: file1.rrd, file2.rrd, file3.rrd, etc. (basically
all the files in a certain directory). Each file is identical, in terms of
data sources (let's say each one contains temperature readings).

I want to create a single plot that presents the average temperature, and
95th percent temperature (ideally the standard deviation, if I could get it)
of the overall collection of files.
In other words for each x value, the y values would be: average (of the
collection of same timepoint values in file1, file2, etc..), then the 95th
percent (of the collection of same timepoint values in file1, file2, etc.)

I've tried several permutations in drraw and can't quite suss it out -
except that I'm pretty sure it's possible.

Any pointers?

Thanks,
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