On Wed, 3 Dec 2003, Charlie Younghusband wrote:
> basic.rptm.hist:
> # bin min max count % acc%
> 817 1216 1391 8644 1.28 1.28
> 861 1392 1399 5795 0.86 2.15
>
> I don't understand why the number of bins varies, the number used
> for the bin, and why the count percentage varies so much from bin to
> bin.
In addition to Henrik's response, note that when dumping raw
histograms, for each line, Polygraph accumulates the number of bins
necessary to account for at least 1% of values. If a single bin has 1%
or more of values it will be dumped on a single line. If 1000
consecutive bins together hold 1% or more of values, they will be
dumped on a single line.
FYI: The 1% granularity is hardcoded in Histogram::print(). You can
change that if your want your custom graphs to have more than 100
points and/or more detail in peak concentration areas.
> What I would really like to is to graph the histogram itself for
> visualization.
Note that the Reporter tool in Polygraph 2.8.0 graphs many histograms
for you. It does it using raw logged data so there is no problem with
hardcoded steps for plain text tables.
Alex.
-- Protocol performance, functionality, and reliability testing. Tools, services, and know-how. http://www.measurement-factory.com/
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