Project with CRS set to 'No projection (or unknown/non-Earth projection)' throws exception with North Arrow

[qgib]

Author Name: Richard Duivenvoorde (@rduivenvoorde)
Original Redmine Issue: 17108
Affected QGIS version: master
Redmine category:decorations

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Having an older project, and opening it in QGIS it got a 'No projection (or unknown/non-Earth projection)' crs.

Trying to add a North Arrow throws an exception then, telling me "Could not create transform to calculate true north".

Easy reproducable (in master) by opening a new project.
Going to project crs properties and selecting checking 'No projection (or unknown/non-Earth projection)'.

Adding a North Arrow now (without any data) throws exception (see screendump).
After the exception there is a proces going on (looking at the progressbar in the screendump)

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• crstransexception.png (Richard Duivenvoorde)

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Related issue(s): #24773 (duplicates)
Redmine related issue(s): 16874

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[qgib]

Author Name: Richard Duivenvoorde (@rduivenvoorde)

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• description was changed from Having an older project, and opening it in QGIS it got a 'No projection (or unknown/non-Earth projection)' crs.

Trying to add a North Arrow throws an exception then, telling me "Could not create transform to calculate true north".

Easy reproducable (in master) by opening a new project.
Going to project crs properties and selecting checking 'No projection (or unknown/non-Earth projection)'.

Adding a North Arrow now (without any data) throws exception (see screendump) to Having an older project, and opening it in QGIS it got a 'No projection (or unknown/non-Earth projection)' crs.

Trying to add a North Arrow throws an exception then, telling me "Could not create transform to calculate true north".

Easy reproducable (in master) by opening a new project.
Going to project crs properties and selecting checking 'No projection (or unknown/non-Earth projection)'.

Adding a North Arrow now (without any data) throws exception (see screendump).
After the exception there is a proces going on (looking at the progressbar in the screendump)

[qgib]

Author Name: Giovanni Manghi (@gioman)

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• regression was changed from 0 to 1
• category_id was changed from Map Canvas to Decorations
• priority_id was changed from Normal to High

[qgib]

Author Name: Patrick Dunford (@enzedrailmaps)

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You need to reassign the CRS for the project manually. The CRS may not be imported from older project files in later masters.

[qgib]

Author Name: Patrick Dunford (@enzedrailmaps)

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duplicate 16874

[qgib]

Author Name: Alexander Bruy (@alexbruy)

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• duplicates was configured as Error "Could not create transform to calculate true north" when a north arrow decoration displayed in the map editor #24773

[qgib]

Author Name: Alexander Bruy (@alexbruy)

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• resolution was changed from to duplicate
• status_id was changed from Open to Closed