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Hi,
I had a need for a more fine-grained control over the way dc sends filtering functions to crossfilter (use case as in picture below : aggregated geoJson overlay - continents or regions - selecting multiple countries)
This small addition would allow it:
christophe-g@470bc44
It is just adding the possiblity to add a prepareFilter function (identity function per default). In the present use case, the function would return a range of coutry ids on the basis of the keyAccessor of selected region in the cholorpleth chart.
Cheers,
C.
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