Bug report #21822

Cannot load multivariable netcdf files

Added by saverio vicario 7 months ago. Updated 7 months ago.

Status:Open
Priority:High
Assignee:-
Category:Rasters
Affected QGIS version:3.4.6 Regression?:Yes
Operating System:ubuntu 18.04 Easy fix?:No
Pull Request or Patch supplied:No Resolution:
Crashes QGIS or corrupts data:No Copied to github as #:29637

Description

I upgraded QGis and I cannot load some netcdf anymore. All the file multivariable that I have cannot be read.
The netcdf that I can load do not trigger the window were to choose the variable as before but directly load the single variable present in the files.
When I try to load a multivariable netcdf Qgis report on the GUI that source is not valid and on terminal I am getting only warnings relative to the naming of dimensions
"
Warning 1: dimension #2 (x) is not a Longitude/X dimension.
Warning 1: dimension #1 (y) is not a Latitude/Y dimension.
Warning 1: dimension #0 (Year) is not a Time or Vertical dimension.
"
so no critical error.
When I am using gdalinfo is all fine.
when I am using gdal_translate to transform a single variable in geotiff is all fine and am getting a tiff file correctly read by qgis itself.

Testy.nc - dataset with dimension renamed, that open but with error message (4.22 MB) saverio vicario, 2019-04-11 10:13 AM


Related issues

Related to QGIS Application - Bug report #21783: Error reading netCDF with multiple bands Open 2019-04-07

History

#1 Updated by saverio vicario 7 months ago

An update:
when from my python script were I generate the netcdf I select a single variable from my mutivariable dataset and produce a new netcdf files, this is loaded no problem inside qgis.
So the problem is really that qgis 3.4.6 does not produce a pop up window were used can select the variable of interest to be loaded.

#2 Updated by Giovanni Manghi 7 months ago

  • Status changed from Open to Feedback

Please attach sample data, thanks!

#3 Updated by Giovanni Manghi 7 months ago

  • Regression? changed from No to Yes
  • Priority changed from Normal to High
  • Subject changed from Cannot load multivariable netcdf files into QGIS 3.4.6 that were loading in QGIS 2.8 to Cannot load multivariable netcdf files

Also possibly duplicate of #21783

#4 Updated by Jürgen Fischer 7 months ago

#5 Updated by saverio vicario 7 months ago

I solved partially the problem.
I changed the name of dimensions from x to X, from y to Y, and from Years to Time and Qgis recognize my multivariable netcdf as something to be read by MDAL. So I got my visualization,albeit always with an error message. So I would like to change the report to "feature request": the error message should more clear and state if some variable are not recognized or at least report the warning of gdalinfo that guided me to make the changes. I attach a smaller data set so that you can read the error message that stay even if now the data set is read ( probably some other metadata are asked)

#6 Updated by Giovanni Manghi 7 months ago

  • Category changed from Data Source Manager to Rasters
  • Status changed from Feedback to Open

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