"Cannot read property 'downPointers' of undefined" when changing chart.data

[RobbiesCode]

While trying to build a Column Chart Drill Down example I came accross this error message:

Cannot read property 'downPointers' of undefined

I am only replacing data with a new array (to show "drill down" items):

series.columns.template.events.on("hit", function(e){

  // update series datafields
  chart.series.getIndex(0).dataFields.valueY = "value";
  chart.series.getIndex(0).dataFields.categoryX = "category";

  var country = e.target.dataItem.dataContext.country;

  chart.data = sub_data[country];

});

Codepen demo: https://codepen.io/team/amcharts/pen/a501be0585aa103b3df5216b3932db98?editors=1010

[martynasma]

On click, you update categoryX data field of the series, but category data field of the category axis remains old one. Need to update it as well:

chart.xAxes.getIndex(0).dataFields.category = "category";

[RobbiesCode]

Of course, overlooked that completely. Thanks!

[RobbiesCode]

Actually, the error is still there, even after update the category of the X Axis. I think it has to do with the hover or hit event. The columns are replaced, while the mouse is still over the column...

// throws error
series.columns.template.events.on("hit", function(e){
  displayChildData();
});

// no error
series.columns.template.events.on("hit", function(e){
  setTimeout(displayChildData, 100);
});

displayChildData function:

  function displayChildData(){

    // update series datafields
    chart.series.getIndex(0).dataFields.valueY = "value";
    chart.series.getIndex(0).dataFields.categoryX = "category";

    categoryAxis.dataFields.category = "category";

    var country = e.target.dataItem.dataContext.country;

    chart.data = sub_data[country];

  }

[martynasma]

Fixed in 4.2.3.

[4.2.3] - 2019-03-14

Fixed

• Exporting via API from a chart that did not have ExportMenu set, was resulting in error.
• Fixed tooltip flickering that were set directly on series objects (columns/bullets).
• Because of daylight saving, sometimes DateAxis could mistake yearly data for monthly data if baseInterval was not set explicitly.
• Sometimes Sankey nodes did not perfectly fit into chart area.
• Tick location on Y axis was being ignored.
• Ticks were positioned incorrectly when multiple axes were on the same side of the XYChart.
• Issue with strictMinMax and single data item fixed.
• valueY (or any other value) wasn't working in legendSettings.itemLabelText.

Full change log.

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