Bug report #17345

Graduated classification is missing lowest data value in its classes

Added by Johannes Kroeger over 6 years ago. Updated about 6 years ago.

Affected QGIS version:2.18.13 Regression?:No
Operating System: Easy fix?:No
Pull Request or Patch supplied:No Resolution:up/downstream
Crashes QGIS or corrupts data:No Copied to github as #:25242


Load the attached GeoJSON file.
Select a Graduated style for the Alle_2012 field. Any mode is fine.
The low value the lowest class is shown as "39.31" to me.
In the map, one of the polygons is shown transparent.

The polygon has a Alle_2012 value of 39.3146345533185.

If I simply double-click the values and hit OK, the polygon will be shown.

missing lowest value.geojson (3 MB) Johannes Kroeger, 2017-10-27 03:43 PM


#1 Updated by Anita Graser over 6 years ago

  • Affected QGIS version changed from 2.18.13 to master
  • Priority changed from Normal to High

Can reproduce in 2.18 and master.

#2 Updated by Giovanni Manghi over 6 years ago

  • Affected QGIS version changed from master to 2.18.13
  • Status changed from Open to Feedback

Is this a regression?

#3 Updated by Nyall Dawson over 6 years ago

  • Assignee set to Nyall Dawson

#4 Updated by Nyall Dawson over 6 years ago

  • Resolution set to up/downstream
  • Assignee deleted (Nyall Dawson)

Upstream issue in gdal library. Can be tested by running

ogrinfo -al -sql "SELECT min(Alle_2012) from OGRGeoJSON" missing\ lowest\ value.geojson

Reports: 39.3146345533185, when the actual field value is 39.314634553318456

#5 Updated by Giovanni Manghi about 6 years ago

  • Status changed from Feedback to Closed

Also available in: Atom PDF