Bug report #4688

fTools "dissolve" not showing open layers

Added by Daniel Porter almost 13 years ago. Updated over 7 years ago.

Status:Closed
Priority:Normal
Assignee:-
Category:Processing/QGIS
Affected QGIS version: Regression?:
Operating System: Easy fix?:
Pull Request or Patch supplied:No Resolution:invalid
Crashes QGIS or corrupts data: Copied to github as #:14574

Description

I am attempting to dissolve polylines from a shapefile using Vector->Geoprocessing Tools->Dissolve, however the dissolve tool does not populate the dropdown menu "Input vector layer" with my currently open layers. It is empty. When I pick Geoprocessing Tools->Symmetrical difference, the dropdowns are populated appropriately.

I'm using QGIS 1.7.3 on Windows XP Service Pack 3 installed from the binary installer. My fTools is 0.6.1.

I attached a screenshot of the failure mode.

My email is

dissolve_bug.JPG - screenshot of plugin failure mode (17.4 KB) Daniel Porter, 2011-12-21 11:24 AM

History

#1 Updated by Alexander Bruy almost 13 years ago

  • Category changed from Python plugins to 44

What geometry have your layers? Dissolve tool requires polygons, so if there are no polygonal layers - no layers in selector.

#2 Updated by Daniel Porter almost 13 years ago

Alexander Bruy wrote:

What geometry have your layers? Dissolve tool requires polygons, so if there are no polygonal layers - no layers in selector.

D'oh. ArcGIS identifies the shapes as "polyline". I tried it with a polygon shapefile and it works just fine. :)

The QGIS Manual (http://download.osgeo.org/qgis/doc/manual/qgis-1.7.0_user_guide_en.pdf p. 155) does say that the dissolve tool supports "features". It might be nice if that was updated to say "polygons". The documentation seems very good.

Thanks for the help.

#3 Updated by Giovanni Manghi almost 13 years ago

  • Resolution set to invalid
  • Status changed from Open to Closed

#4 Updated by Giovanni Manghi over 7 years ago

The "ftools" category is being removed from the tracker, changing the category of this ticket to "Processing/QGIS" to not leave the category orphaned.

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