Label direction does not take scale-dependent average to determin line orientation

[qgib]

Author Name: Robin Lovelace (Robin Lovelace)
Original Redmine Issue: 6200
Affected QGIS version: master
Redmine category:labelling

---

This is a simple problem.

The new label interface in QGIS 1.9.0 is excellent and dynamic labelling capabilities impressive.
However, label orientation is not good for wiggly lines like rivers.
When zoomed out, the labels rarely follow the large-scale direction of the river.
Instead, the orientation seems to follow individual (small scale) segments, which leads to labels being 90 degrees rotated from their ideal alignment.

See images and sample river label project (attached).

Perhaps solution could build on this [[bug]] fix: https://issues.qgis.org/projects/quantum-gis/repository/revisions/b77d606744ec3721ba15366ff754fcbce0a265d7 .

---

• gis-projects.zip (Robin Lovelace)
• 90-degrees-labels.jpeg (Robin Lovelace)
• compressed-river-labels.jpeg (Robin Lovelace)

[qgib]

Author Name: Martin Dobias (@wonder-sk)

---

This would be most likely fixed with introduction of on-the-fly simplification in the labeling engine. The simplification would also help to resolve #12173.

---

• assigned_to_id removed Martin Dobias

[qgib]

Author Name: Giovanni Manghi (@gioman)

---

• os_version was changed from 12.04 64 bit to
• operating_system was changed from Ubuntu to

[qgib]

Author Name: Jürgen Fischer (@jef-n)

---

• fixed_version_id was changed from Version 2.0.0 to Future Release - Lower Priority

[qgib]

Author Name: Giovanni Manghi (@gioman)

---

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

[qgib]

Author Name: Giovanni Manghi (@gioman)

---

End of life notice: QGIS 2.18 LTR
*
Source:*
http://blog.qgis.org/2019/03/09/end-of-life-notice-qgis-2-18-ltr/

---

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