dataCount problematic behavior when replacing data

[Frozenlock]

I've followed the example here to replace data while keeping the filters intact.

It seems to work with every chart component except dc.dataCount.

When the data is replaced, the total count is correct, but the filter-count turns negative.

Is this a bug, or am I missing a step?

[Gordon Woodhull]

Hi Frozenlock,

When you ask a question, could you please, please include a working example?

If you don't, you're pretty much forcing people to reproduce your work in order to answer your question.

I've done that here: http://jsfiddle.net/gordonwoodhull/92v4mL84/

I'm not seeing negative numbers; the count updates and the old filter is applied to the new data correctly.

dc.dataCount is a pretty obscure component, so I'm guessing you've attached it to something it's not compatible with. Although it can be convinced to display other things, it's only expecting to be attached to a crossfilter instance (for its "dimension" ugh) and groupAll.

Cheers,

Gordon

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[Gordon Woodhull]

(that or you're using a custom groupAll reduction and there is a mismatch between your reduceAdd and reduceRemove functions)

To view this discussion on the web visit https://groups.google.com/d/msgid/dc-js-user-group/1AA7A97E-BDAF-40A1-83C9-BCA68D3BA85B%40woodhull.com.

[Frozenlock]

> When you ask a question, could you please, please include a working example?

Will do! Thanks you so much for taking the time to answer me.

After your response, I tried moving a few things around and use different dimensions and groupings.

(I was already using (.dimension ndx) and (.group all))

Nothing worked.

That is until I switched the order of re-applying the filters and adding the new data.

I did the same thing on your fiddle and it still works.

http://jsfiddle.net/92v4mL84/1/

For some reason the order matters on my charts but not on the example provided.

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Ok, I think I found the problem.

One of the charts has a on-filtered hook to focus some followers charts.

Turns out that everything is fine until I use the .focus method.

When I use .focus, I must make sure that filters are applied before adding the new data or the dataCount will be wrong.