Create Category List for Cross-Filtering, Highlighting, Drilldown etc.

[Daniel Marsh-Patrick]

In tackling some of the issues around highlighting and cross-filtering, it's evident that the data view mapping is too granular to create suitable selectionId objects for each category, as they are grouped by sampling and then by category. The result is that we get a valid ID that will only filter a specific data point for that category.

The logical answer is to provide a higher-level data view mapping but multiple data view mappings in the capabilities are not supported (or currently intended to be).

We should see if we can map our category data into the view model correctly, can we generate a specific selectionId that corresponds to all data points? Theoretically we should be able to re-iterate the view model once it’s mapped and use the index of that category to do it. if we can do this, then we should be albe to manage #34, #35 and #45.