I am plotting data related to goods being issued to service various equipment. When I place Cost vs Date on a bar chart I get the expected values. If I add the Description or Item Code of each part to the chart as a legend, many of my records are excluded, resulting in a lower than expected value. If I apply a filter to view just a single day, the chart sometimes, but not always, produces the correct result.
I have confirmed that the values displayed in the chart with no legend are indeed correct.
I am experiencing this issue with the current version of Power BI Desktop, as well as on the web service. This issue was not present in the previous version of Power BI Desktop. When using the previous version of Power BI, I would get the expected results for all charts in the Desktop app, but incorrect results once published to the web service.
Edit: my only theory is that this may be related to the number of itemcodes I'm trying to use in a legend. The day that displays correctly (in the screenshot below) when filtered (July 5, 2016) has 48 distinct itemcodes. The one that does not display correctly has 73 distinct itemcodes. The entire month of July has 184 distinct itemcodes.
Can anyone tell me what the cause of this issue might be?
