Hi Viz, Thank you. Just what I was looking for.
Best regards, Bill On Thu, Apr 22, 2010 at 6:01 PM, bill walton <[email protected]> wrote: > Greetings! > > I just started using the API and I love it. Totally awesome. I really > appreciate all the work that's been done and hope to be able to > contribute some back in the near future. > > I work in Rails and picked up the GC4R plugin. Again, awesome. I've > added rotation to the 3D pie chart and a separate parameter for labels > vs. legends. I don't know the author and I haven't found any way to > contact him to see if he's taking contributions. If he's here or anyone > knows how to contact him I'd appreciate being put in contact. I'm at > bwalton dot im at gmail dot com. > > Now on to the primary reason for my email. Perhaps it's a feature that > I just haven't found documented, but past a certain 'threshold' the > slices in a 3D pie chart stop rendering properly; that is, in correct > proportion. > > Using one of the examples from the documentation... > > The original renders proportions correctly: > > http://chart.apis.google.com/chart?cht=p3&chd=t:60,40&chs=250x100&chl=Hello|World<http://chart.apis.google.com/chart?cht=p3&chd=t:60,40&chs=250x100&chl=Hello%7CWorld> > > Adding a third parameter renders proportions correctly: > > http://chart.apis.google.com/chart?cht=p3&chd=t:60,40,100&chs=250x100&chl=Hello|World<http://chart.apis.google.com/chart?cht=p3&chd=t:60,40,100&chs=250x100&chl=Hello%7CWorld> > > Increasing the value of the third parameter renders proportions > incorrectly: > > http://chart.apis.google.com/chart?cht=p3&chd=t:60,40,110&chs=250x100&chl=Hello|World<http://chart.apis.google.com/chart?cht=p3&chd=t:60,40,110&chs=250x100&chl=Hello%7CWorld> > > It appears to me that the threshold is a function of the total of the > parameters. Divide each by 10 and the proportions are rendered > correctly. > > http://chart.apis.google.com/chart?cht=p3&chd=t:6,4,11&chs=250x100&chl=Hello|World<http://chart.apis.google.com/chart?cht=p3&chd=t:6,4,11&chs=250x100&chl=Hello%7CWorld> > > The threshold appears to 'hit' when the total of the parameters in this > example reaches 200. I haven't had time to experiment on larger numbers > of datasets to find their threshold, but it appears to me so far that > the threshold is at least partially a function of the number of > datasets. I have a 6-slice pie that reaches it's threshold much later > than 200, though I haven't had time to find out exactly what the number > is. > > I thought I would write first and find out if this behavior is a design > feature and there's some documentation I should read in order to program > to the API correctly. If so, I'd appreciate being pointed. If not, let > me know if I can assist in isolating the nature of the problem more > exactly. > > Again, thanks very much to the Google team for this awsome library. I > expect to make much use of it. > > Best regards, > Bill > > > > > -- You received this message because you are subscribed to the Google Groups "Google Visualization API" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-visualization-api?hl=en.
