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My questions is about heatmap plugin in QGIS 3.2.0

I have my data in CRTM05 projection, it´s a metric projection to Costa Rica based in WGS84 Datum.

When I try to run the Heatmap plugin, the running show this:

"Processing algorithm… Algorithm 'Heatmap (Kernel Density Estimation)' starting… Input parameters: { 'DECAY' : 0, 'INPUT' : '/Users/robertovargasmasis/Desktop/Taller SIG 2018 CeU Neily/ejemplo_mapadecalor/puntos_crtm05.shp', 'KERNEL' : 0, 'OUTPUT' : '/var/folders/2z/fsqk6cy931d8r3c97qhc5gcr0000gn/T/processing_5bcc93e95ed54cd8b7e647b933ecf4e1/94fc27fbde38406eabee152a81d702aa/OUTPUT.tif', 'OUTPUT_VALUE' : 0, 'PIXEL_SIZE' : 0.1, 'RADIUS' : 100, 'RADIUS_FIELD' : None, 'WEIGHT_FIELD' : None }

Traceback (most recent call last): File "/Applications/QGIS3.app/Contents/MacOS/../Resources/python/plugins/processing/algs/qgis/Heatmap.py", line 215, in processAlgorithm self.tr('Could not create destination layer')) _core.QgsProcessingException: Could not create destination layer

Execution failed after 0.03 seconds

Loading resulting layers Algorithm 'Heatmap (Kernel Density Estimation)' finished"

Someone have had this problem? How to fix it?

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  • I see you have spaces in the path to your input file. Copy the shapefile(s) to a folder with no spaces in its name, to see if that works (maybe something like /Desktop/Taller_SIG_2018....") . Sometimes the filename isn't quoted properly, when that happens , spaces in file paths can break things.
    – Steven Kay
    Commented Jul 13, 2018 at 21:06
  • I have had the same problem, though I am using SAD6996 projection. The text seems to be the same: Processing algorithm… Algorithm 'Heatmap (Kernel Density Estimation)' starting… Input parameters: { 'DECAY' : 0, 'INPUT' : '/Users/martimfurtado/Dropbox/EQUIPE/Martim/layers/SAD69-96_SHP_TEMA_-_SAUDE_UBS-POSTO_DE_SAUDE-CENTRO_DE_SAUDE.shp', 'KERNEL' : 0, 'OUTPUT' : '/var/folders/wz/0jmtyzqj2bsd_31hv3hkl3vc0000gn/T/processing_21db7899ba1641c081f8cc3781124c73/08461555934740468669e3fb199d4f95/OUTPUT.tif', 'OUTPUT_VALUE' : 0, 'PIXEL_SIZE' : 0.1, 'RADIUS' : 100, 'RADIUS_FIELD' : None, 'WEIGHT_FIELD' :
    – Martim Ferraz
    Commented Aug 17, 2018 at 15:33
  • This does not really answer the question. If you have a different question, you can ask it by clicking Ask Question. You can also add a bounty to draw more attention to this question once you have enough reputation. - From Review
    – nmtoken
    Commented Aug 17, 2018 at 16:01
  • I get the same problem, with the same error with QGIS 3.2.3 - "Could not create destination layer" - this is true even if explicit output path with no spaces is supplied.
    – Konrad Lawson
    Commented Oct 14, 2018 at 14:50
  • I posted a bug report for this: issues.qgis.org/issues/20105
    – Konrad Lawson
    Commented Oct 14, 2018 at 15:00

2 Answers 2

Reset to default
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Adjust the pixel size. The default value may be too small, thus resulting in an overly large file. The default was 0.1, I changed it to 5 and the heatmap worked.

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0

As Damini Jain answered in This post

  1. Right click on your layer.
  2. Select Properties.
  3. In the Properties dialog, switch to the Symbology tab
  4. Select heatmap
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