Bug report #14341

Processing: Build Virtual Raster requires loading of all source files

Added by Paolo Cavallini over 4 years ago. Updated over 3 years ago.

Status:Closed
Priority:Normal
Assignee:Victor Olaya
Category:Processing/GDAL
Affected QGIS version:master Regression?:No
Operating System: Easy fix?:No
Pull Request or Patch supplied:No Resolution:duplicate
Crashes QGIS or corrupts data:No Copied to github as #:22328

Description

This is highly impractical. The approach of GDALTools is more reasonable, being able to load files or an entire directory from filesystem, without loading the layer into the canvas first.


Related issues

Related to QGIS Application - Feature request #13871: "build virtual vector": add option to select files. Curre... Closed 2015-11-24

History

#1 Updated by Alexander Bruy over 4 years ago

Unfortunately current intplementation of the multiple input parameter in Processing does not allow to choose both layers and files. Currently we can only change algorithm, so it will work with files, not layers.

Support for both layers and files in multiple input parameter can be a task for future releases.

#2 Updated by Mathieu Pellerin - nIRV over 4 years ago

Glad this has been filed already. IMO, I would see the lack of implementation as a blocker to move forward with replacing the gdal plugin with processing menu entries (which I'm a huge fan of and hope it'll happen prior to the release of 2.16 :) )

Having to load rasters to simply have those be combined into a virtual raster is needlessly costly, and can be quite a burden on slower machines / CPUs. You can alleviate some of that by unchecking the [x] render check box, but that's not such a great UX.

#3 Updated by Alexander Bruy about 4 years ago

  • Status changed from Open to Closed

Closing this in favor of generic ticket #14641

#4 Updated by Giovanni Manghi over 3 years ago

  • Resolution set to duplicate

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