[errpr] buffers 1.8 vs 2.2

[qgib]

Author Name: wiktor matlakiewicz (wiktor matlakiewicz)
Original Redmine Issue: 10597
Affected QGIS version: 2.2.0
Redmine category:processing/qgis

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qgis version: 2.2.0-Valmiera rev. c3a2817
OS: windows 7 prof 64bit

Create buffers without intersections.

image 00 - buffers creating settings (both 1.8 and 2.2)
image 01 - old buffers created by 1.8 (OK)
image 02 - new buffers created by 2.2 (WRONG)

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• 00_settings.jpg (wiktor matlakiewicz)
• 01_buffers_18.jpeg (wiktor matlakiewicz)
• 02_buffers_22.jpg (wiktor matlakiewicz)

[qgib]

Author Name: Giovanni Manghi (@gioman)

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please attach sample data.

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• fixed_version_id was configured as Version 2.4
• category_id was configured as 44
• status_id was changed from Open to Feedback

[qgib]

Author Name: Jürgen Fischer (@jef-n)

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• fixed_version_id was changed from Version 2.4 to Future Release - High Priority

[qgib]

Author Name: wiktor matlakiewicz (wiktor matlakiewicz)

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Now I see what really happend.
Buffer creating OK, this is rendering / view problem.

qgis 1.8 shows overlayed elements "double" - so overlayed parts show as "darker" on image 01.

qgis 2.2 shows overlayed elements once - lover element is full covered by upper when both are from the same shp.

[qgib]

Author Name: Giovanni Manghi (@gioman)

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you have two kind of transparency in qgis 2.x: the layer transparency and the symbol transparency. If you use the first (not available in 1.8) then you see the effect you describe.

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

[qgib]

Author Name: Giovanni Manghi (@gioman)

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The "ftools" category is being removed from the tracker, changing the category of this ticket to "Processing/QGIS" to not leave the category orphaned.