[OSGeo Africa] Recent main place or sub-place spatial data forSA

[Lydia du Toit]

Thanks for the info

-----Original Message----- 
From: Calle Hedberg
Sent: Monday, August 01, 2016 8:16 PM
To: 'Africa local chapter discussions'
Subject: Re: [OSGeo Africa] Recent main place or sub-place spatial data 
forSA

Hi,

Just a follow-up of my inquire about this earlier today:

1. Helene Verhoef from StatsSA provided me with the relevant layers earlier 
this afternoon. EXCELLENT service - my type of GIS expert :-)

2. She also told me that anybody visiting a StatsSA office can get a copy of 
the Small Areas data set, released in 2013, onto their laptops (my 
impression was that it's been distributed internally on 3 DVDs, which 
probably means that it is too much data for normal downloads). Furthermore, 
something of high relevance for e.g. the Malaria program and others working 
with local communities and residences/dwellings: StatsSA has coordinates for 
around 14 mill dwellings in the country - probably around 90%+ of the 
total - and successfully used some months back for the Community Survey 
2016. Bona Fide users (like other government departments) can thus use the 
same data set as a basic framework for their work with households/dwellings.

3. Finally, Helen also told me that AfriGIS has digitized all the postal 
areas in the country - I will contact them about access/cost.

If all the above is known stuff, I apologise - but if not, others might find 
the info useful.

Regards
Calle

-----Original Message-----
From: Africa [mailto:africa-bounces at lists.osgeo.org] On Behalf Of Calle 
Hedberg
Sent: 01 August 2016 09:44 AM
To: 'Africa local chapter discussions'
Subject: [OSGeo Africa] Recent main place or sub-place spatial data for SA

Hi,

Disease surveillance, and in particular the Malaria program, has for many 
years used a set of "localities" (villages, suburbs, etc) to determine the 
origin or residence of e.g. malaria cases.

That level of detail/granularity is similar to the so called "sub-place" 
layer released by StatsSA in 2003 - containing around 21,500 local areas 
(although a number of them are sparsely populated areas with no name).

We  are now revamping and consolidating the system for disease surveillance, 
which require a spatial data set with similar granularity but preferably 
newer than 2001/2003. I already have the ward layers for 2011 and 2016 - 
using wards is too coarse for our purposes, and most patients would not 
easily use wards as a reference to where they live.

1.
StatsSA said 2-3 years ago that they had updated the so called "main place" 
layer, but I cannot find any download links on their website. Anybody knows 
where to get that layer?

2.
There was no mention in that news item of the "sub-place" layer - anybody 
knows if a new (well, probably based on Census 2011) sub-place layer is 
available anywhere?

3.
Another option would be to build a clustered Enumeration Area layer - is the 
Census 2011 EA layer available from anywhere?

4.
Final question: the list of postal codes from SAPO is at the same level of 
granularity as the sub-place layer. I know SAPO never developed or at least 
released spatial data for their postal areas - have anybody else attempted 
to do that work for them?

Best regards
Calle Hedberg
Cape Town


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