Bug report #20221

Gererate Contours from Points

Added by Joel Scott over 5 years ago. Updated over 5 years ago.

Category:Python plugins
Affected QGIS version:3.2.3 Regression?:No
Operating System:Windows 10 64 bit Easy fix?:No
Pull Request or Patch supplied:No Resolution:
Crashes QGIS or corrupts data:No Copied to github as #:28042


I have a shape file containing random points with values to contour after taking the difference of two fields. Some points have Null values. I used the following expression in the Generate Contours tool to select only non Null values:
CASE WHEN "topsTOP" is not null and "topsELEVATION" is not null and "topsFORMATION" Like '%Prec%' THEN "topsELEVATION" - "topsTOP" END

This would not function within the tool but I could use the same expression to select the points without Nulls and tick the Selected Features Only box and this would work. Shouldn't Case work within the Generate Contours Tool?

Generate Contours-Non Null Selections.txt Magnifier (2.42 KB) Joel Scott, 2018-10-26 01:55 AM


#1 Updated by Saber Razmjooei over 5 years ago

  • Status changed from Open to Closed

Please log your ticket to the plugin issue tracker.

QGIS expression works fine. So, there must be an issue with the plugin:

Also available in: Atom PDF