(QGIS 3.20) I am having trouble getting my heatmap to animate properly using temporal controller. I am using a point layer with many points in the same location so a heatmap would really help visualize the data. But, when using temporal controller, every year shows exactly the same image. These are the temporal settings I'm using: Single field with date/time, field=dateconst, event duration = 1 year, accumulate features over time = false

I have the same layer symbolized as points, with exactly the same temporal settings - this layer animates fine and shows the changes from year to year. So I don't think the problem is with these settings, but I could be wrong.

I generated the heatmap layer by duplicating the point layer and changing the symbology to Heatmap.

What am I doing wrong?

  • Providing more details about your project (settings, data, attributes) or even sharing it could help understanding what went wrong.
    – Babel
    Commented Sep 24, 2021 at 21:13

1 Answer 1


Solved, there were a couple issues going on:

  • Null date values were showing up in every frame and needed to be filtered out
  • The radius in heatmap symbology was too large, preventing me from seeing the very small changes.
  • I played around with the "maximum" option in heatmap symbology to better seperate different densities.

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