Bug report #14062

Expressions using commas as decimal seperator fail to evaluate

Added by Harrissou Santanna over 8 years ago. Updated about 5 years ago.

Affected QGIS version:2.12.1 Regression?:No
Operating System: Easy fix?:No
Pull Request or Patch supplied:No Resolution:end of life
Crashes QGIS or corrupts data:No Copied to github as #:22072


In symbol properties (and elsewhere in QGIS), you can put a calculation expression in a spinbox instead of typing a value.
This only works if the point character (.) is the decimal separator.
In my (localization related?) settings, the comma character (,) is used as decimal separator and an expression like 0,2 * 3 doesn't work while the 0.2 * 3 works and returns 0,6

Isn't it weird to have a value with the comma displayed in the spinbox, interpreted as a numeric value (e.g returning a size) but failing to be used in calculation?


#1 Updated by Harrissou Santanna over 8 years ago

Oups, miss a title. Can be something like "Comma separated value not allowed in spinbox calculation"

#2 Updated by Nyall Dawson over 8 years ago

  • Subject changed from Allow to Decimals with commas fail to evaluate in spin boxes
  • Status changed from Open to Feedback

The spin boxes calculations use the same expression engine as field calculator. Can you test if the expressions with commas work ok in field calculator?

#3 Updated by Harrissou Santanna over 8 years ago

It fails. Tested with: 0,8 * 3.
In the field calculator, I get an "Expression is invalid" at the bottom of the dialog and the "more infomation" links shows:

Parser Error:
syntax error, unexpected COMMA, expecting $end

Eval Error:
No root node! Parsing failed?

And same message in the calculator bar of the attribute table. note that the expression becomes red as soon as the comma is typed.

Note also that when I simply type 0,8 in a spinbox, it becomes 0.8 as soon as i leave the field.

#4 Updated by Nyall Dawson over 8 years ago

  • Subject changed from Decimals with commas fail to evaluate in spin boxes to Expressions using commas as decimal seperator fail to evaluate

#5 Updated by Nyall Dawson over 8 years ago

  • Category changed from Edit widget to Expressions

#6 Updated by Giovanni Manghi about 8 years ago

  • Status changed from Feedback to Open

#7 Updated by Giovanni Manghi almost 7 years ago

  • Regression? set to No
  • Easy fix? set to No

#8 Updated by Giovanni Manghi about 5 years ago

  • Resolution set to end of life
  • Status changed from Open to Closed

End of life notice: QGIS 2.18 LTR


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