I noticed that the heatmap calculation on the new upgrade version of qgis is given the raster map without any coordinate system.
Have you got the same problem?
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1Yes, looks like a local (0,0) system in QGIS 2.8.1. Works in QGIS 2.6. – Jakob Mar 05 '15 at 12:44
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2This is a known bug in 2.8.1, which should be fixed in 2.8.2. – Simbamangu Mar 05 '15 at 13:42
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This looks like the same issue I'm having, good to see it's being addressed: http://gis.stackexchange.com/questions/137891/qgis-2-8-raster-layers-moved – Tumbledown Mar 06 '15 at 14:09
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1It looks like the heatmaps are being referenced in image coordinates, not the coords of the SRS. – DavidF Mar 17 '15 at 18:33
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This is a known bug in 2.8.1, which is (according to the tracker) slated for fixing in 2.8.2.
As an alternative, you can use v.kernel from the Processing toolbox.
Simbamangu
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You can also use the on-the-fly heatmap generator on the layer style of the properties dialog. – DavidF Mar 17 '15 at 18:34
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What is this "on-the-fly heatmap generator"? Are you talking about layer blending modes on the point layer? – Nate Wessel Mar 20 '15 at 01:43
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Until it get fixed You can do as follows with one more step:
- Calculate heatmap as normal
- Create new raster with Raster > Projections > Warp(Reproject) - leave the original projection
- Magic - the new raster is exactly where it belongs :)
I got this answer from @Joseph who gave helpful comment in the duplicate thread: QGIS 2.8 Raster Layers Moved and encouraged me to post it here.
