We're using the xamchart in a UI where users are able to chose from a large set of data series to view on the chart, as well as pick the duration to be displayed. We're now seeing cases where if we hit some threshold number of data values (large number of series and/or a large number of data values per series), the background of the chart goes black. If we then eliminate any one series, or contract the duration, it immediately looks fine. (Note: it is not the case that the grid lines get closer and closer to evolve into a solid black background, which is what I first suspected when I took a look at this problem. It seems pretty well tied to the number of values).
Is there any limitation to the number of datapoints a chart can support? Is the expected behavior? a bug in the xamchart? Otherwise, any suggestions of what to look into on our part?
the chart's performance will degrade over 10,000 points or thereabouts, depending on the series types. how many series / datapoints are you using, and what are the series ChartTypes?
The chart I'm presently looking at has 13 series, and it turns black when i increase the datapoints from 76 to 77, thus increasing the total datapoints from 988 to 1001. Not sure if going past 1000 is some magic threshold, but it's interesting to note. ChartTypes are a mix of Columns, Lines and Areas.