The problem here is that your first two data points are very close together (1 minute and 14 seconds apart) and the third data point is almost exactly 1 day later. The chart sees that is needs to create bar groups small enough to fit in the space required by the closest two date times, and makes each group (chart area height * (min time space) / (max date time - min date time)) pixels tall (this is a rough calculation by my estimates, I suspect the actual algorithm used is a bit more refined). With the min time at 1:14, the time spread at ~24:00:00, and the chart area height at ~270 pixels (which is what you get from the options you set), each bar group is about 0.24 pixels tall. Rounding means that some bar groups are 1 pixel and others are 0 pixels. If you increased the height of the chart substantially (like this: http://jsfiddle.net/asgallant/sxyN8/, scroll to the bottom to see the two close-together datetimes), you would see the other bars just fine.
On Saturday, February 22, 2014 9:52:56 AM UTC-5, Markus Schlick wrote: > > Hello, > i have some problems with two groups in the Barchart. > When I use only two data rows it will be fine. > But with three or more data rows, the second Column won't be displayed > > right with two rows: > > http://savedbythegoog.appspot.com/?id=1702572df60d15701fb9a5dacc17e8dd83558286 > > wrong with three rows: > > http://savedbythegoog.appspot.com/?id=e44747a07ed7492d3606af422ecb16b887ecb86e > > Does anyone know, what's wrong? > > Thanks. > -- You received this message because you are subscribed to the Google Groups "Google Visualization API" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/google-visualization-api. For more options, visit https://groups.google.com/groups/opt_out.
