[Qgis-user] Feature enhancement/request for QGIS digitizing toolbox

[maning sambale]

On 11/17/08, Andreas Neumann <a.neumann at carto.net> wrote:
> Hi,
>
>> I use QGIS extensively for digitizing.  Hope this request is valid as
>> an ehancement to QGIS digitizing tools.
>>
>> 1. Stream-mode digitizing
>
> I wonder if stream-mode is really that useful. In my experience, at least
> when working with mouse - stream-mode digitizing is not very accurate and
> creates not-very optimal results.

> It might be different with a wacom-like tablet and a pen, though.
>
> Are you using one of those digitizing pens?

No, I don't use digitizing pens.

Generalizing lines from stream-mode digitizing can be easily edited
with generalize tools in GRASS.

>> 2. Adding regular polygons (ala-CAD) like arcs and rectangles
>
> arcs would be very useful. I would also like to see better arc-support in
> open source GIS - but the problem is that all the underlying libraries (at
> least ogr and proj, I am not sure about geos) do not support arcs and
> other curves. This means that arcs probably at the current time have to be
> transformed into regular polygons with lots of vertices.

That could be a work-around.

>> Maybe we can get some inspiration from JOSM (OSM's java editor)
> yes, maybe.
>
> Andreas

Note:  While in many ways I am satisfied with the existing digitizing
tools, the above feature/enhancement is an often requested feature
when I introduce QGIS/GRASS to many colleagues.  Especially NGOs
working with geospatial data.

Thank you for looking into this.

cheers,
maning

> Andreas Neumann
> Böschacherstrasse 6, CH-8624 Grüt/Gossau, Switzerland
> Email: a.neumann at carto.net, Web:
> * http://www.carto.net/ (Carto and SVG resources)
> * http://www.carto.net/neumann/ (personal page)
> * http://www.svgopen.org/ (SVG Open Conference)
> * http://www.geofoto.ch/ (Georeferenced Photos of Switzerland)
>
>


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