Bug report #19348

Convex hull does not run in QGIS 3.2

Added by Joshua Mabonga about 2 years ago. Updated about 2 years ago.

Status:Closed
Priority:High
Assignee:Giovanni Manghi
Category:Vectors
Affected QGIS version:3.2 Regression?:Yes
Operating System:Windows 10 Easy fix?:No
Pull Request or Patch supplied:No Resolution:
Crashes QGIS or corrupts data:No Copied to github as #:27176

Description

I've tried to create a convex hull (Vector > Geoprocessing Tools > Convex Hull) from points and no polygon was created. When i checked the attribute table of layer created, it did not contain any values, indicating it did not run and only created an empty layer file.

When i tried to create a convex hull with QGIS 2.18 using the same file, a polygon was created indicating there may be an issue with version 3.2.

My CRS is EPSG 32636, WGS 84 UTM Zone 36N. I have attached below a log file with errors i got.

Someone had the same issue and posted it to stackexchange.com at https://gis.stackexchange.com/questions/283111/creating-minimum-convex-polygon-home-range-from-points-in-qgis . So it obvious, it's not only me experiencing the issue.

convex hull log file.txt Magnifier - log file (28.6 KB) Joshua Mabonga, 2018-07-06 01:15 AM

qgis sample data.csv Magnifier - sample data (307 Bytes) Joshua Mabonga, 2018-07-06 09:02 PM

Associated revisions

Revision f6ab5f95
Added by Nyall Dawson about 2 years ago

[processing] Better error when 'Convex hull' algorithm is run on
single point feature layer

Which hints to users to use the 'Minimum bounding geometry' algorithm
instead.

Fixes #19348

Revision c473ac00
Added by Nyall Dawson about 2 years ago

[processing] Better error when 'Convex hull' algorithm is run on
single point feature layer

Which hints to users to use the 'Minimum bounding geometry' algorithm
instead.

Fixes #19348

(cherry-picked from f6ab5f95)

History

#1 Updated by Giovanni Manghi about 2 years ago

  • Status changed from Open to Feedback
  • Regression? changed from No to Yes
  • Priority changed from Normal to High

Can you attach sample data? thanks!

#2 Updated by Joshua Mabonga about 2 years ago

Giovanni Manghi wrote:

Can you attach sample data? thanks!

Please find sample data attached

#3 Updated by Nyall Dawson about 2 years ago

  • Status changed from Feedback to In Progress

#4 Updated by Nyall Dawson about 2 years ago

  • % Done changed from 0 to 100
  • Status changed from In Progress to Closed

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