DC.js brush to select range not working with scaleTime


DC.js brush to select range not working with scaleTime



PROLOGUE
This is my first time posting to stackoverflow and i'm a noob with dc.js. Apologies in advance for etiquette transgressions (feedback welcome on this too)



PROBLEM
I have defined a barchart and it displays perfectly, but brushOn(true) is not letting me filter the data. In the past, this seemed to work perfectly with a crosshair appearing as soon as i hovered over the bargraph. Now it is not. Any idea why?! or what i can do to fix it? I'm on day 3 of trying to figure out what is happening. The help is MUCH appreciated!



PREREQS:


https://d3js.org/d3.v5.min.js
crossfilter.min.js
https://unpkg.com/dc@3.0.4/dc.js



CODE FOR BARCHART
I have defined a barchart as follows:


filterDim = cross.dimension(function(d){return d3.timeWeek(d.date);});
var filterGroup = filterDim.group().reduceSum(function(d){
if(d.isTrue){return 1;}
else {return 0;} });

height=400;
if(width == 0){
width = $(dom_id).parent().innerWidth();
}
var hitsbarChart = dc.barChart(dom_id);
hitsbarChart
.width(width).height(height)
.dimension(sentDimension)
.group(allGroups[0].data,allGroups[0].name)
.xUnits(d3.timeWeeks);

hitsbarChart
.x(d3.scaleTime())
.valueAccessor(function(d){return d.value;})
.keyAccessor(function(d){return d.key;})
.round(d3.timeWeek.round)
.yAxis().ticks(d3.format('.3s'));

function calc_domain(chart) {
var min = d3.min(chart.group().all(), function(kv) { return kv.key; }),
max = d3.max(chart.group().all(), function(kv) { return kv.key; });
max = d3.timeMonth.offset(max, 1);
chart.x().domain([min, max]);
}
hitsbarChart.on('preRender', calc_domain);
hitsbarChart.on('preRedraw', calc_domain);

hitsbarChart.brushOn(true);
dc.renderAll();



RESEARCH



I found this example which demonstrates something different but outputs a graph with time-series as the x-axis and working brush to select a range of dates.



Also, there this bug with work-around but the work around did not work. I can't imagine that time-series data works more like an ordinal scale than a numerical scale.





Should work! Indeed a time-scale is not ordinal at all. No interaction at all? No crosshair? Do you have dc.css?
– Gordon
2 days ago





Please post a fiddle if you're continuing to have trouble.
– Gordon
yesterday





Yea, i do have dc.css. from unpkg: unpkg.com/dc@3.0.4/dc.css. I will put together a fiddle and update the question. Good to know that i didn't miss something super important/fundamental ;).
– Srikar Prasad
22 hours ago






Most annoying outcome ever: In making a fiddle, it seems to work perfectly....jsfiddle.net/srikasip/Lhatm67n/26
– Srikar Prasad
21 hours ago






Ha, yes you often solve the problem in the course of creating a self-contained example. It's a devious pedagogical technique. Now you just need to figure out what's different between your actual app and the fiddle :)
– Gordon
21 hours ago









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