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Im joining dots with a CSV file and map my data with proportional circles. Unfortunately I have some overlapping.

How do I sort a join layer based on attribute column called aPOPCLA72 ?

  • Filtering virtual layer of my layer based on 1=1 order by "aPOPCLA72" desc do not work. The column is not sorted.

  • Sorting using MMQGIS gives me invalid sort field name error (field name: aPOPCLA72)

Why I want to sort my data: avoiding proportional circles overlapping. I want to render the big circles first.

enter image description here

I am using QGIS 3.6

  • the suggestion below to use the 'control feature rendering order' will only work if your data is NOT joined, that is, if you export your joined datasets into a static one... I've been having this issue lately. – DPSSpatial Jun 12 at 15:48
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Try controlling drawing order within symbology menu:

image

Note this is just a workaround to get your visual result. It will not change the sort order of attributes. Only the order in which your features will be drawn.

  • Thank you forhelping. Not working with the size assistant ? – Wilcar Jun 12 at 10:50
  • Not sure if I get you right. But you can not control drawing or attribute order using size assistant. – MrXsquared Jun 12 at 10:52
  • It should actually work like you tried with virtual layer. E.g. select * from pointlayername order by "aPOPCLA72 " desc. Can't tell why it does not from here... – MrXsquared Jun 12 at 10:53
  • OK. It is why I want to sort my column before to ovoid overlapping. The size asssistant is great for rendering proportional symbols. – Wilcar Jun 12 at 10:54
  • Ah ok. Yes sure, use the renderer like you already did. Just leave everything as it is and do the step in my answer as additional step. – MrXsquared Jun 12 at 10:56

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