ChartData.add_series() displays number_format integer in PPT until data is accessed

Hey all,

First time posting so I apologize if I break any conventions. I am using Chart.replace_data to automatically update data on a chart shape in a powerpoint template and I think I may have found a bug. Below you will see my code.

slide=prs.slides[6].shapes
chart_data=ChartData()
chart_data.categories=["CAT1","CAT2","CAT3","CAT4"]
chart_data.add_series("Series Name",(val1,val2,val3,val4), 9)
chart=find_shape_by_name("Chart1").chart
chart.replace_data(chart_data)

For some reason once I save and open the powerpoint, the chart in question displays the number_format (in this case 9) for each category. But in powerpoint if you go to view the data in excel, it contains the correct numbers and will adjust the chart accordingly. I’d like to avoid this additional step as the rest of the powerpoint is being populated automatically.

Thanks for your help!

[scanny]

Okay, looks like the documentation got ahead of the implementation. The numeric built-in number formats appear to not have gotten implemented and probably won’t for a while.

I’ll tag this ticket to update the documentation at least for the next release and to get those in there next time we’re in the neighborhood.

[DZemens]

I’ve observed the same bug with respect to Axis labels. @inmanenz as a possible workaround, rather than treating this like a functional enum (which it may not be), you may be able to use the format string "0%".

If I create a series by using the format string:

chart_data.add_series("Series Name",(val1,val2,val3,val4), '0%')

The axis labels appear as expected, {10%, 20%, … 90%, 100%}

If instead I create the series by using the constant values defined in Excel Number Formats enum (NB: this doesn’t appear to be a part of pptx.enum.chart even though it’s listed in the dox beneath that enum…):

chart_data.add_series("Series Name",(val1,val2,val3,val4), 9)

The axis labels all appear like: {9, 9, … 9, 9}

As soon as I right-click the chart and “Edit Data” from PowerPoint, then the labels appear properly.