Bug report #11182
Expression editor in Layer Properties does not support division of integer data
| Status: | Closed | ||
|---|---|---|---|
| Priority: | High | ||
| Assignee: | - | ||
| Category: | Expressions | ||
| Affected QGIS version: | 2.4.0 | Regression?: | No |
| Operating System: | Linux | Easy fix?: | No |
| Pull Request or Patch supplied: | No | Resolution: | worksforme |
| Crashes QGIS or corrupts data: | No | Copied to github as #: | 19495 |
Description
Affected function: under Layer Properties --> Style --> Graduated --> Expression
Issue: writing an expression that divides values in two separate columns (type: int; length: 10) of an ESRI SHP file results in incorrect value (0). Addition, subtraction, and multiplication all work as expected and produce sensible results.
Expected behaviour: when dividing two integer values, the result should be promoted to a real value.
The Expression editor is non-functional in its present state.
Related issues
History
#1
Updated by d d about 10 years ago
- Target version changed from Future Release - High Priority to Version 2.6
#2
Updated by d d about 10 years ago
It looks like this was discussed previously, but never resolved: #5153
#3
Updated by Jürgen Fischer about 10 years ago
- Resolution set to worksforme
- Status changed from Open to Closed
d d wrote:
It looks like this was discussed previously, but never resolved: #5153
That's the intended behaviour. Division of integers produce integers. You can convert either argument using to real(int) to produce a floating point result.