Better support for vector features crossing the internation date line with some projections

[qgib]

Author Name: 克鲁 黄 (克鲁 黄)
Original Redmine Issue: 19626
Affected QGIS version: 3.2.1
Redmine category:map_canvas

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When I use Natural Earth as data source and want to change projection for the project to customized Robinson, the map breaks apart (see attached file).
I use a projection as follows:
Proj4: +proj=robin +lon_0=150dE +x_0=0 +y_0=0 +datum=WGS84 +units=m +no_defs
Hope if it's not a bug. But if it is, I'd like to know if there's a workaround.

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• _未命名的项目 - QGIS 2018-08-15 15.02.14.png (克鲁 黄)

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Related issue(s): #27571 (relates)
Redmine related issue(s): 19746

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[qgib]

Author Name: Giovanni Manghi (@gioman)

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There are limitations (for features crossing the dateline) when you want to reproject global data. One of the tricks it to generate a 0-360 map instead of a -180/180 one. I believe there is an example on the QGIS manual.

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• status_id was changed from Open to Feedback

[qgib]

Author Name: Richard Duivenvoorde (@rduivenvoorde)

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see #10656 including pointers to relevant GRASS solution?

[qgib]

Author Name: 克鲁 黄 (克鲁 黄)

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Seems that the issue has no elegant solution yet.
As a reminder to other users, please leave this issue open until wrap around works in future releases.

[qgib]

Author Name: Giovanni Manghi (@gioman)

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克鲁 黄 wrote:

Seems that the issue has no elegant solution yet.
As a reminder to other users, please leave this issue open until wrap around works in future releases.

yes, but probably there are similar tickets already open (cannot do a search now). I would appreciate if you could give it a go, so we can eventually close the duplicates.

[qgib]

Author Name: 克鲁 黄 (克鲁 黄)

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All right. If there are duplicates, you're free to close this issue.

[qgib]

Author Name: Giovanni Manghi (@gioman)

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克鲁 黄 wrote:

All right. If there are duplicates, you're free to close this issue.

Duplicate of #21432

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

[qgib]

Author Name: Andreas Neumann (@andreasneumann)

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• relates was configured as Disappearing -180 / 180 longitude grid lines on certain zoom levels #27571

[qgib]

Author Name: 克鲁 黄 (克鲁 黄)

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I've found that #21432 is closed due to "end of life" of QGIS 2.18 LTR. I will reopen this issue until wrap around works in future releases.

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• status_id was changed from Closed to Reopened

[Pedro-Murteira]

Can still reproduce on QGIS 3.16.14 and 3.22.1.

[alexbruy]

Duplicates #25398.