Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Measure area - result varies with ellipsoidal toggling & with no. of vertices in polygon #14529

Closed
qgib opened this issue Dec 10, 2011 · 2 comments
Closed
Labels
Bug
Milestone

Comments

@qgib
Copy link
Contributor

@qgib qgib commented Dec 10, 2011

Author Name: Steve Hartley (Steve Hartley)
Original Redmine Issue: 4628


I'm running QGIS 1.7.2 on Win 2000.
Further to bug report no.4416.
This effect seems to occur whether starting with ellipsoidal on or off. The first area (i.e. after right click to finish sketched polygon) in "Total" box is roughly correct. Toggling ellipsoidal then changes "Total" to a reduced amount, toggling again changes "Total" to a slightly higher amount but doesn't return it to the first reading. The effect is more pronounced with fewer vertices in the sketched polygon. With 4 vertices the first toggling approximately halves "Total", and subsequent toggling changes it close to this halved quantity. With 3 vertices, the first toggling reduces it to 0.00, and further toggling still results in 0.00.

@qgib

This comment has been minimized.

Copy link
Contributor Author

@qgib qgib commented Dec 10, 2011

Author Name: Paolo Cavallini (@pcav)


Duplicate of #14197


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

This comment has been minimized.

Copy link
Contributor Author

@qgib qgib commented Dec 10, 2011

Author Name: Alister Hood (@AlisterH)


This and #14348 are duplicates of each other, but are completely different from #14197

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Projects
None yet
1 participant
You can’t perform that action at this time.