[OSGeo Africa] Africa Digest, Vol 131, Issue 2

Wed Jan 24 03:15:53 PST 2018

Hi comrades am getting traboules in referencing my vector layer in qgis it
doesn't overlaying together foristance buildings polygons and the area
boundary how can I solve this. Help me please

On Jan 24, 2018 14:09, <africa-request at lists.osgeo.org> wrote:

Send Africa mailing list submissions to
        africa at lists.osgeo.org

To subscribe or unsubscribe via the World Wide Web, visit
        https://lists.osgeo.org/mailman/listinfo/africa
or, via email, send a message with subject or body 'help' to
        africa-request at lists.osgeo.org

You can reach the person managing the list at
        africa-owner at lists.osgeo.org

When replying, please edit your Subject line so it is more specific
than "Re: Contents of Africa digest..."

Today's Topics:

   1. Re: CRS in use in South Africa (Peter Newmarch)
   2. Re: CRS in use in South Africa (Hugo Paul)

----------------------------------------------------------------------

Message: 1
Date: Wed, 24 Jan 2018 13:05:18 +0200
From: "Peter Newmarch" <newmarch at land-surveyors.com>
To: <africa at lists.osgeo.org>
Subject: Re: [OSGeo Africa] CRS in use in South Africa
Message-ID: <022e01d39503$389389b0$a9ba9d10$@land-surveyors.com>
Content-Type: text/plain; charset="utf-8"

Lebogang,

This is just a thought – but surely under the SDI act, the SGO is the Base
data custodian – I know there are problems with data, but if people are
calculating it themselves – how does one ever expect to have the “base
data” corrected. Is it not easier to force a situation where all data comes
from one source, all missing data goes through one source, and all changes
in data goes through one source. ??

Peter Newmarch

From: Lebogang Modiba [mailto:inah.modiba at gmail.com]
Sent: Wednesday, January 24, 2018 1:01 PM
To: newmarch at land-surveyors.com; africa at lists.osgeo.org
Subject: Re: [OSGeo Africa] CRS in use in South Africa

Hi Peter

The coordinates on the sg diagrams and general plans helps us alot
especially in cases where the CSG spatial data recived from CSG offices are
incomplete or somwtimes incorrect.We use those coordinates to update and
validate  the cadastral data.

There are times where you find that the whole township is missing from CSG
spatial data and you require to work on that township urgently therefore
waiting for CSG officials tonot update it for u  not being an option.We use
those coordinates to plot that whole township ourselves either using auto
cad or ArcGIS.

I would request that there be education in helping GIS personnels in
converting those coordinates into decimal degress rather removing them.

Kind regards

Ms Lebogang Modiba

On 24 Jan 2018 12:50, "Peter Newmarch" <newmarch at land-surveyors.com <mailto:
newmarch at land-surveyors.com> > wrote:

Dear all,

I am interested in peoples thoughts on the Coordinates on diagrams and
general plans. For surveyors its simply duplicated work and plays no part
in the registration of the diagram or general plan. From what I can see it
was needed in an era of time to assist in plotting things by hand on paper.
Land Surveyors don’t use coordinates in reconstructing properties and
replacing beacons so they really serve no purpose on the diagram or general
plan. The information is still in the survey records as a separate
coordinate list so the SG can plot the property appropriately.

What are peoples thoughts about removing them and relying only on the SGO
spatial data for such ?

Regards

Peter Newmarch

_______________________________________________
Africa mailing list
Africa at lists.osgeo.org <mailto:Africa at lists.osgeo.org>
You can UNSUBSCRIBE at https://lists.osgeo.org/mailman/listinfo/africa

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/africa/attachments/
20180124/ba7f7fdd/attachment-0001.html>

------------------------------

Message: 2
Date: Wed, 24 Jan 2018 11:03:12 +0000
From: Hugo Paul <hugo at mhpgeo.co.za>
To: "newmarch at land-surveyors.com" <newmarch at land-surveyors.com>,
        "Africa local chapter discussions" <africa at lists.osgeo.org>
Subject: Re: [OSGeo Africa] CRS in use in South Africa
Message-ID:
        <DB6PR0701MB243928F8F5CDFCFCA9DC3C61E0E20 at DB6PR0701MB2439.
eurprd07.prod.outlook.com>

Content-Type: text/plain; charset="utf-8"

Good day

We maintain a LIS system and are heavily reliant on the coordinates on an
SG diagram, this also serves as a means of quality control for our Land
Surveyors.
I’ve found that the spatial data on the SG website is not accurate in most
cases, or very outdated.

Regards
Hugo

From: Africa [mailto:africa-bounces at lists.osgeo.org] On Behalf Of Peter
Newmarch
Sent: Wednesday, 24 January, 2018 12:18
To: 'Africa local chapter discussions' <africa at lists.osgeo.org>
Subject: Re: [OSGeo Africa] CRS in use in South Africa

Dear all,

I am interested in peoples thoughts on the Coordinates on diagrams and
general plans. For surveyors its simply duplicated work and plays no part
in the registration of the diagram or general plan. From what I can see it
was needed in an era of time to assist in plotting things by hand on paper.
Land Surveyors don’t use coordinates in reconstructing properties and
replacing beacons so they really serve no purpose on the diagram or general
plan. The information is still in the survey records as a separate
coordinate list so the SG can plot the property appropriately.

What are peoples thoughts about removing them and relying only on the SGO
spatial data for such ?

Regards

Peter Newmarch

Disclaimer

The information contained in this communication from the sender is
confidential. It is intended solely for use by the recipient and others
authorized to receive it. If you are not the recipient, you are hereby
notified that any disclosure, copying, distribution or taking action in
relation of the contents of this information is strictly prohibited and may
be unlawful.

This email has been scanned for viruses and malware, and automatically
archived by Mimecast SA (Pty) Ltd, an innovator in Software as a Service
(SaaS) for business.  Mimecast Unified Email Management (UEM) offers email
continuity, security, archiving and compliance with all current
legislation.  To find out more, visit http://www.mimecast.co.za/uem.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/africa/attachments/
20180124/5434e19e/attachment.html>

------------------------------

Subject: Digest Footer

_______________________________________________
Africa mailing list
Africa at lists.osgeo.org
https://lists.osgeo.org/mailman/listinfo/africa

------------------------------

End of Africa Digest, Vol 131, Issue 2
**************************************
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/africa/attachments/20180124/845917e1/attachment-0001.html>