[Popcon-developers] Bug#651902: popcon.debian.org: Wrong y-axis for graph of submissions per arch?

[Ben Hutchings]

On Tue, 2011-12-13 at 01:38 +0100, Bill Allombert wrote:
> On Mon, Dec 12, 2011 at 11:49:35PM +0000, Ben Hutchings wrote:
> > Package: popularity-contest
> > Severity: normal
> > 
> > The graphs of 'Number of submissions per architecture' at
> > http://popcon.debian.org appears to show that there are about 90,000
> > current submissions for i386 and amd64, whereas the table to the left
> > shows about 60,000 for each.
> > 
> > In general, it seems that the values on the y-axis are about 50% too
> > high.  Either that, or there is a subtle distinction in what is being
> > counted in the tables and graphs, that could be made more clear.
> 
> As an experiment, I removed the dots, so the line is thinner now. 
> Not sure this fix the actual problem, but at least there is less
> clutter.

Look at the line for i386 on the 12 month graph.  It intersects the
y-axis at the label 92,681 and is 1 pixel (about 5%) higher at the right
margin.  So this indicates a value greater than 92,681, whereas the
table shows 65,957.

Then look at the line for armel: it starts above 1448 and rises over the
12 months, but the table shows 1307.

Then if you look at the series with the smallest values you can see that
there are steps at the first tick, the second tick, two steps up to the
third tick, four steps up to the fourth tick.

I think the real values at the y-ticks are 1, 2, 4, ..., 2^i,
2^(i+1), ...

Ben.

-- 
Ben Hutchings
Computers are not intelligent.	They only think they are.
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