[Qgis-developer] MapInfo and QGIS – An overview « Nathans MapInfo and .Net Blog

Andreas Neumann a.neumann at carto.net
Wed Dec 8 03:29:44 EST 2010


yes - arcs would be nice to have in the Open Source GIS stack. I would
need them as well.

However, it would be a lot of work to implement it in the whole stack:
geos, proj4, ogr, QGIS, Postgis (already supports arcs, but not yet for
all operators/functions)

I am still hoping it will happen some day ...

In my opinion the support of arcs is one of the main differences between
the more established, commercial GIS and QGIS. All of the survey data in
Switzerland contains arcs. Currently, in OS GIS one has to segment the
data on import ...

Andreas

On Tue, December 7, 2010 5:55 pm, Milo van der Linden wrote:
> Yes, nice comparison. Thanks Nathan for giving us this!
>
> As a former MapInfo consultant, I can say that there is one more thing
> qGIS lacks, well, not qGIS in particular but OGR: arcs. Besides that
> it is a myth that mapinfo uses the same sql across all tables. You
> simply have to convert every table to mapinfo's own file format in
> order to work with it.
>
> Performance is a minor issue in my opinion; if everything is a
> shapefile, qGIS is almost as fast as MapInfo. MapInfo is particulary
> malperforming with wms layers, wfs layers are almost impossible.
>
>
>
> 2010/12/7 Giovanni Manghi <giovanni.manghi at gmail.com>:
>> http://woostuff.wordpress.com/2010/12/06/mapinfo-and-qgis-an-overview/
>>
>>
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-- 
Andreas Neumann
http://www.carto.net/neumann/
http://www.svgopen.org/



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