javascript - How to prevent my crossfilter from selecting nothing - dc.js -

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i'm working on project using dc.js , don't want crossfilter render unless data selected. currently, possible enter image description here

is there way avoid happening? want @ least 1 bar have selected crossfilter.

i found answer. need add following 2 lines bar chart:

.round(dc.round.floor) .alwaysuserounding(true)

if bar chart has property .centerbar(true), should use following instead:

.round(function(n) { return math.floor(n) + 0.5 }) .alwaysuserounding(true)

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