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I have added a CSV file data points into QGIS. Then I opened properties and tried to convert points inside the plot as single line (used option > properties > symbology > marker > geometry generator > Line string).

But, I can't see any data in my plot after selecting this option. Is there any other way to convert points to line?

Data points within districts of India

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  • The symbology has nothing to do with feature conversion. v.to.lines from the toolbox is what you want.
    – Erik
    Commented Mar 1, 2019 at 10:01
  • There is also a possibility from SAGA GIS: Convert points to line(s).
    – Taras ♦
    Commented Mar 1, 2019 at 10:04

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If I understand you the geometry generator is not what you want, basically it's a symbology tool that allow you to use a different geometry on your feature (like representing your point by a polygon buffer for exemple). If you are creative you may be able to create a line with it but the more commun way to convert ordered point to line is by using a geoprocessing tool.

Go to processing toolbox and look for either :

  • "Point to path" tool in QGIS>vector creation
  • "v.to.lines" in GRASS>Vector
  • "Convert point to line(s)" in SAGA>Vector line tools

each of these tool will create a new line layer based on your point

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  • By the way, do you know the difference between these three algorithms and which one is the quickest/efficient?
    – Taras ♦
    Commented Mar 1, 2019 at 10:14
  • @Taras No I have no idea if these use different method or not or if one is better than another
    – J.R
    Commented Mar 1, 2019 at 10:35
  • Since your question was successfully answered, please accept the answer by clicking the tick.
    – henkth
    Commented Mar 1, 2019 at 10:40
  • And perhaps indicate which function you used to get the result.
    – Techie_Gus
    Commented Mar 2, 2019 at 7:27

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