Feature #5492

Filter for geometry types

Added by johnrobot - about 1 year ago. Updated about 1 year ago.

Status:Feedback Start Date:04/25/2012
Priority:Normal Due date:
Assigned to:Victor Olaya % Done:

0%
Category:Request for algorithms
Target version:-
Patch supplied:No

Description

I´d like to see a tool for filtering features based on the geometry type. For example:

Polygon
Line
Point
Raster
No geometry

That would help me select and work with specific parts of a data set.

History

#1
Updated by Victor Olaya about 1 year ago

  • Status changed from New to Feedback

i do not understand this...

I assume that you mean taking a vector layer and outputing just the features it contains of a given kind, in case it has mixed geometries (I d onot know if QGIS supports that...). That makes sense with pts, lines and polygons...but not with raster and no geometry.

Could you please give more details?

Thanks!

#2
Updated by johnrobot - about 1 year ago

In quite a few cases, I work with more than one data set, so I usually work with vector, raster and table data, for example SHP-files, TAB-files, PostGIS, SQL Server, text files, DWG-files, GoeTIFFs, DEMs etc. Therefore, my projects contain a lot of data in different formats and geometry types.

I´d like to see a tool that can filter the data according to its geometry type. Databases can, for example, contain features with or without geometry and if I remember correctly, so can TAB-files. I´m sure there are more examples.

I suggest doing this one step at a time, for example starting with filtering polygons, lines and points. If this seems useful to more users, additional geometry types can be added later on.

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