I am trying to convert a point file, currently displayed into a contour file. The methods that I have tried, all expect a raster file as an input, but my source file is a vector file points, i.e. Input displayed as heatmap

I have tried the gdal colour plugin with the following results enter image description here

Not what I was expecting, I was hoping for a blob that represented the deep red in the first image and perhaps some other bands. There must be a better way of doing this unless I have missed something important! Any sugggestions?

  • Have you tried using the Contour plugin which takes point vector files as input? – Joseph Feb 14 '19 at 11:11
  • Is the first figure you displayed above rendered by the QGIS heatmap renderer? Or did you compute a density raster using a processing algorithm? – root676 Feb 14 '19 at 12:18
  • The 1st drawing is the result of displaying point data as a heatmap as per the drop down menu on on the 'Symbology' tab of the properties. If helps each point has a 'value' field associated with it. I begining to wonder if there is better way of generating a heapmap – Dave Feb 14 '19 at 13:16

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