Non-'Single Symbol' styles hide the layer in Master

[qgib]

Author Name: Simon Dedman (@SimonDedman)
Original Redmine Issue: 9394
Affected QGIS version: master
Redmine category:symbology

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Hi all,

I've just posted this problem on gis.stackexchange "here":https://gis.stackexchange.com/questions/83522/graduated-colouring-voronoi-polygons-qgis , after having a similar problem "here":https://gis.stackexchange.com/questions/72284/why-are-some-values-missing-from-the-imported-csv .

In brief: in QGis master, csv files (and polygons e.g. voronoi built off them?) disappear when styles other than 'single symbol' are selected. Also (diagnostically?) a blank-named column field is present at the end of the list of candidate columns upon which to base the style. In DuFour, neither of these problems are present (please see above links for pictures which explain this better; pictures also attached here).

QGis master Cheers.

Simon

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• csv_graduated_bug.png (Simon Dedman)
• csv_graduated_bug2.png (Simon Dedman)
• bug1.png (Simon Dedman)
• bug2.png (Simon Dedman)
• 2.0.1_works.png (Simon Dedman)
• CelticSampleVoronoi.shp (Simon Dedman)
• CelticCropNoNANoNegsSample.csv (Simon Dedman)

[qgib]

Author Name: Giovanni Manghi (@gioman)

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I cannot confirm the issue (with both a CSV point layer and the derived vorony polygons) in QGIS master. Please attach sample data.

The "blank" column it is because now you can do categorized symbology using expression, anyway by choosing this blank attribute, then not using any expression and then and clicking "ok" is harmeless as the symbology remains the same (single symbol).

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• status_id was changed from Open to Feedback
• category_id was changed from Browser to Symbology

[qgib]

Author Name: Simon Dedman (@SimonDedman)

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Sample data attached.

Interesting about the blank column - thanks for the info, I assumed it was connected to this issue!

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• 6698 was configured as CelticCropNoNANoNegsSample.csv
• 6697 was configured as CelticSampleVoronoi.shp

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• CelticCropNoNANoNegsSample.csv (Simon Dedman)
• CelticSampleVoronoi.shp (Simon Dedman)

[qgib]

Author Name: Giovanni Manghi (@gioman)

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Assuming that you are using the column "Average.Depth" to create the categorized symbology, then the "." in the column name is the culprit.

On qgis master/linux when using that column and the categorized symbology, then the classes are created but not applied.

If you edit the CSV and change the column name (Ex: "AD"), then all works as expected.

I'm not sure if dots are allowed in column names, if yes then it could be a qgis issue. If not then qgis should reject such layers.

[qgib]

Author Name: Giovanni Manghi (@gioman)

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it works as expected (even with the "." in the column name) on qgis master.

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• status_id was changed from Feedback to Closed
• resolution was changed from to worksforme