[Qgis-user] How to filter features by date

[Anita Graser]

Hi,

OGR changed the syntax. I had the same issue in the TimeManager
plugin. See the discussion on http://trac.osgeo.org/gdal/ticket/5507

Best wishes,
Anita


On Wed, Jul 16, 2014 at 8:22 AM, Zoltan Szecsei <zoltans at geograph.co.za> wrote:
>
> Hi,
>
> On 2014/07/16 06:00, Mark Coletti wrote:
>
> I have an attribute type of "QDate" and I wish to filter out features that
> are older than a given date.  However I cannot seem to come up with the
> right magical incantation in the qgis filter to do so.
>
> I do the following:
>
> 1. right-click on the vector layer and select "Filter ..."; the Query
> Builder dialog appears
> 2. In the expression field I write:
>
> "SampleTime" <= "2011/07/01"
>
> Try double quotes for "Fields" and single quotes for 'values'
>
> Regards,
> Zoltan
>
>
> For which I get the following error:
>
> An error occurred when executing the query.
>
> The data provider said:
>
> OGR[3] error 1: Type mismatch or improper type of arguments to <= operator.
>
>
> So how do I get this to work?
>
> Thanks!
>
> Mark
> --
> mcoletti at gmail.com
>
>
>
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> --
>
> ===========================================
> Zoltan Szecsei PrGISc [PGP0031]
> Geograph (Pty) Ltd.
> GIS and Photogrammetric Services
>
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>
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