Bug report #21157

i.pca by grass7 output issue -0.0000

Added by Odysseas Vl over 2 years ago. Updated over 2 years ago.

Affected QGIS version:3.4.4 Regression?:No
Operating System:Windows 10 64bit Easy fix?:No
Pull Request or Patch supplied:No Resolution:up/downstream
Crashes QGIS or corrupts data:No Copied to github as #:28975


Not sure if this is the right place to point this out, but:
I have been trying to manipulate the log output of the i.pca Grass7 function through QGIS, which outputs (I believe rounded) eigenvector values some of which can be -0.0000. This is a mistake as I believe there is no -0 and it does confuse other mathematical functions when using the output.

pcazeroissue.png (109 KB) Odysseas Vl, 2019-02-04 04:28 PM


#1 Updated by Nyall Dawson over 2 years ago

  • Status changed from Open to Feedback

I'm not sure if this is a QGIS issue, or an GRASS issue. Can you show some screenshots demonstrating how the issue occurs?

#2 Updated by Odysseas Vl over 2 years ago

It may be a GRASS issue indeed, if an issue in the first place. I have attached a screenshot of the log by QGIS

#3 Updated by Nyall Dawson over 2 years ago

  • Resolution set to up/downstream
  • Status changed from Feedback to Closed

Will need fixing in grass - please report on their bug tracker

#4 Updated by Odysseas Vl over 2 years ago

Thanks, will do.

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