Proportionnal symbol

[qgib]

Author Name: Fabien Cerbelaud (Fabien Cerbelaud)
Original Redmine Issue: 13051
Affected QGIS version: master
Redmine category:symbology

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Hi, I try the nighlty version of QGIS 2.9.25 and I have a problem with the size method in graduate symbol. The size method should be in categorized symbol and unique symbol but not in graduated. This is the first problem because we can't give a size to class in graphic semiology, each different value should have a different size.
The other problem is the mathematic calcul for the size, actually it's false, the right calcul is radius = square root(quantity/pi) we can after that multiply or split by a value all the radius value. To solve the problem of really small circle we could choose a minimum size for value under a custom limit. For the big circle we can choose a max value for the radius and find the most appropriated ratio between the max value we want and the radius initially calculate. I hope you could understant what I'm trying to say.
This is very important because the proportionnal symbol are really essential for cartographer and legend associated too.

[qgib]

Author Name: Giovanni Manghi (@gioman)

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2.9.25 is pretty "old", and there have been developments/fixes lately in this area, could you test qgis 2.10 or the new master, thanks.

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• status_id was changed from Open to Feedback
• version was changed from 2.8.2 to master

[qgib]

Author Name: Fabien Cerbelaud (Fabien Cerbelaud)

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Hi, I trying this morning with the 2.10 version available in OSGEO install and the two problems are still the same

[qgib]

Author Name: Giovanni Manghi (@gioman)

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I would suggest to raise this issues in the developers mailing list because I could not say if the actual implementation is wrong as you say or if it is as it is by design.

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• fixed_version_id removed Version 2.10
• operating_system was changed from windows to
• priority_id was changed from High to Normal
• status_id was changed from Feedback to Open

[qgib]

Author Name: Fabien Cerbelaud (Fabien Cerbelaud)

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Hi, I raise this issues in the developers mailing list the 02/07 but nobody anwser. I hope someone tell me something about that and if it's not for this version I hope this could be realise for the next one

[qgib]

Author Name: Giovanni Manghi (@gioman)

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• easy_fix was configured as 0
• regression was configured as 0

[qgib]

Author Name: Giovanni Manghi (@gioman)

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End of life notice: QGIS 2.18 LTR

Source:
http://blog.qgis.org/2019/03/09/end-of-life-notice-qgis-2-18-ltr/

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• status_id was changed from Open to Closed
• resolution was changed from to end of life