[OSGeo Africa] [!! SPAM] Re: How to capture cadastral data using QGIS

[Peter Newmarch]

Gavin

I stand corrected on this, but I believe that the SGO has in house tools 
and of course the surveyors have survey programs that capture it. One 
must be careful as the tricky part is connecting one parcel to the next 
- as your area of capture gets larger and different Land Surveyors have 
done different surveys you will see they don't fit together (because one 
is working on coordinates).

Coordinates are pretty meaningless to a land surveyor aside to give a 
general location, they have little weight.

You will find as well that the bearing and distance need not tally up on 
adjoining surveys. I rarely adopt previous bearing and distances and 
prefer to use my own measurements.

Regards

Peter

Peter Newmarch
Professional Land Surveyor
4Y GeoInformatics Pty Ltd
Tel       : +27 31 5642856
Fax       : +27 31 5643074
Mobile    : +27 82 5705859
eMail     : newmarch at land-surveyors.com

On 2013/08/08 03:14 PM, Johan van Rensburg wrote:
> Hi Gavin,
>
> I find it rather strange that nobody in South Africa has developed such a system that is compatible with your Survey System as the Government has decided to implement open sourced GIS?
>
> Best Regards
>   
> Johan van Rensburg
> GIS Consultant
>
> Geo Business Solutions    l  www.geosol.com.na  l Tel: (061) 226929    l Fax: (061) 229623
>
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> -----Original Message-----
> From: africa-bounces at lists.osgeo.org [mailto:africa-bounces at lists.osgeo.org] On Behalf Of Gavin Fleming
> Sent: Thursday, August 08, 2013 10:46 AM
> To: africa at lists.osgeo.org
> Subject: [!! SPAM] Re: [OSGeo Africa] How to capture cadastral data using QGIS
>
> Hi Johan
>
> The Azimuth and Distance plugin that Uazu mentions does the basics but is fairly rudimentary.
>
> We've developed a QGIS plugin that does coordinate as well as bearing and distance capture and editing. It maintains the 'beacons' thus generated as points in PostGIS. It then allows you to graphically define a parcel based on an ordered set of beacons and generates the parcels on the fly. The result is a beacon layer and a dynamic 'parcels' layer.
>
> It is working on 1.8 in a client environment (Ogun State, Nigeria) and would need funding to update to the QGIS 2.0 API and to make it more generic for wider release.
>
> There is also a UN FOSS project for cadastral management, SOLA [1], that is being trialled in various locations
>
> Gavin
>
> [1] http://www.flossola.org/about/faq
>
> On 08/08/2013 11:16, Uazukuani wrote:
>> Hi Johan
>>
>> The AZIMUTH and DISTANCE Plugin seems to be what you are looking for.
>> Note: I haven't used it.
>> There is unfortunately not much documentation on the internet or the
>> plugin homepage.
>> http://sourceforge.net/projects/qgsazimuth/
>>
>> The plugin interface seems simple enough I am sure you will figure it out.
>>
>>
>> Regards,
>> Uazu
>>
>>
>> On Thu, Aug 8, 2013 at 9:43 AM, Johan van Rensburg
>> <johan at geosol.com.na <mailto:johan at geosol.com.na>> wrote:
>>
>>      Dear All,
>>
>>      Can someone please help by sending me some documentation on how to
>>      capture cadastre erf data using LO coordinates and distance and
>>      direction
>>
>>      Best Regards
>>
>>      **
>>
>>      *Johan van Rensburg*
>>
>>      GIS Consultant
>>
>>      
>> ----------------------------------------------------------------------
>> --
>>
>>      Geo Business Solutionsl<http://www.munsys.com/>www.geosol.com.na
>>      <http://www.geosol.com.na/> l Tel: (061) 226929 l Fax: (061)
>> 229623
>>
>>      
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> --
> regards
>
> Gavin
>
> Gavin Fleming
> http://afrispatial.co.za
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