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I have converted a Road shp file into a Raster in QGIS, however after the conversion the Road is no longer continous (i.e only the cell corners are touching). I have tried increasing the resolution during conversion however that has not solved the problem. The first image is what I need, the 2nd is my current result.Continous road I would like to achieve

Discontinous

method used

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  • 1
    Please overlay the road shape, as well as add your conversion parameters.
    – Erik
    Commented Nov 24, 2020 at 14:35
  • 6
    You could buffer the lines to a desirable thickness and then rasterize that, or apply symbology and export to a tif.
    – John
    Commented Nov 24, 2020 at 14:41
  • Buffering the roads has actually offered some success so thanks for that suggestion.
    – AQGIS
    Commented Dec 9, 2020 at 11:45

1 Answer 1

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Using the gdal tool (Processing Toolbox) called 'rasterize' you can set an advanced parameter to: -at (so, minus at)

Your GDAL/OGR console call would look something like this:

gdal_rasterize -l layer_name -burn 30.0 -at path_to_data_file temp.tif

The documentation for gdal_rasterize is at: https://gdal.org/programs/gdal_rasterize.html#gdal-rasterize

Hope it works

Update

The advanced option is typed in by hand.

enter image description here

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  • thank you for the answer. I have opened up the processing toolbox, but I can't seem to find a specific GDAL rasterize option. The vector to Raster option then doesn't offer a advanced setting where you can choose the - at option. I am using QGIS 3.4
    – AQGIS
    Commented Nov 25, 2020 at 14:53
  • Check in: Processing Toolbox - GDAL - Vector Conversion - Rasterize (vector to raster)
    – FPG
    Commented Nov 26, 2020 at 2:53
  • I have followed that path however I still can't find the option for -at
    – AQGIS
    Commented Nov 26, 2020 at 12:20
  • can you add a screen-shot of the tool that you are using?
    – FPG
    Commented Nov 29, 2020 at 22:55
  • sorry for slow reply. I have added the tool used to the question.
    – AQGIS
    Commented Dec 3, 2020 at 14:11

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