[GRASS-dev] Behavior of v.sort.points

Maris Nartiss maris.gis at gmail.com
Sat May 27 01:07:59 PDT 2017

Please report both as new issues in trac to not loose them:


2017-05-27 6:33 GMT+03:00 Steven Pawley <dr.stevenpawley at gmail.com>:
> Hello devs,
> I appear to be having some problems with the add on v.sort.points. Two
> issues, potentially bugs:
> (1) the module fails if the 'cat' column is not the first attribute in the
> table (i.e. if points have been generated from a database table), returning
> the error:
> 'Error in sqlite3_prepare(): duplicate column name: cat'
> (2) even if 'cat' is the first column, sorting by an integer column does not
> appear to be sorting point datasets in numeric order. Example from the
> nc_spm location:
> v.sort.points input=firestations at PERMANENT output=firestations_sorted
> column=ID
> The order of the points based on opening the attribute table, and the
> relationship between the 'ID' column and 'cat' appears to be the same as the
> original dataset, where 'ID' was not in ascending order.
> Either I'm doing something wrong or the add on requires some tweaks.
> Otherwise this would be a useful tool.
> Steve
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