ATLAS does not fit well for objects higher than they are large

[qgib]

Author Name: Regis Haubourg (@haubourg)
Original Redmine Issue: 6956
Affected QGIS version: master

Assignee: Vincent Picavet

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When generating atlas, images are not fitted correctly into map frame when object bbox is higher than it is large (a portrait aspect more than landscape)
;
Here are two screenshots and zip containing datas + qgs to reproduce it.
Régis

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• rastFRFRR631_4.jpg (Regis Haubourg)
• rastFRFR632.jpg (Regis Haubourg)
• bug_ratio_export_atlas.zip (Regis Haubourg)

[qgib]

Author Name: Regis Haubourg (@haubourg)

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Here are the missing files

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• 5240 was configured as rastFRFR632.jpg
• 5241 was configured as bug_ratio_export_atlas.zip

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• rastFRFR632.jpg (Regis Haubourg) - correct image
• bug_ratio_export_atlas.zip (Regis Haubourg) - zip with data and project

[qgib]

Author Name: Regis Haubourg (@haubourg)

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probably related to #16093

[qgib]

Author Name: Hugo Mercier (@mhugo)

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What do you expect when the extent of an object has not the same aspect ratio as the map frame's one ?
The current behaviour is to resize the height of the frame, keeping the width.
Other choices are :

• resize the extent in the height direction (that what the composer "Set to map canvas" seems to do).
• resize the content (not sure it is wanted)

Perhaps we should expose this choice to the user ...

[qgib]

Author Name: Regis Haubourg (@haubourg)

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Hi, I think everybody expects centered images on both axes when using Atlas. And the bug described here in not only a problem of centering. Data is missing in the lower part of the image. This shouldn't be.

[qgib]

Author Name: Hugo Mercier (@mhugo)

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Data are not exactly missing. If you change settings in order to display the frame border, you will see the frame resized in height to fit the object's extent.
But I understand and agree: keeping the frame's border untouched and centering the object is the key.

[qgib]

Author Name: Hugo Mercier (@mhugo)

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Fixed. Pull request 386
#386

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• done_ratio was changed from 0 to 100

[qgib]

Author Name: Regis Haubourg (@haubourg)

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• status_id was changed from Open to Closed