[GRASS-user] plotting quarter degree squares?

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Hi

I have received from somebody a list of quarter degree squares located in South Africa. Is there
any easy way of plotting these into a map together with the borders of South Africa and the
provinces? The second part (the borders) should not be the problem, but how can I convert the list
of qds into a raster / point layer?

The list looks as follow:

   3030CC
   3129BB
   3129BD
   3129DA
   3130AA
   3218DB
   3318BC
   3318CB

And no, I don't think there is the option to get a different format - closed source software,
custom build, and developer left....... No Comment.

Cheers,

Rainer
- --
Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology, UCT), Dipl. Phys.
(Germany)

Centre of Excellence for Invasion Biology
Stellenbosch University
South Africa

Tel : +33 - (0)9 53 10 27 44
Cell: +33 - (0)6 85 62 59 98
Fax : +33 - (0)9 58 10 27 44

Fax (D): +49 - (0)3 21 21 25 22 44

email: Rainer@krugs.de

Skype: RMkrug
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On Wed, Sep 19, 2012 at 12:20 PM, Rainer M Krug <r.m.krug@gmail.com> wrote:

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Hi

I have received from somebody a list of quarter degree squares located in South
Africa. Is there any easy way of plotting these into a map together with the borders
of South Africa and the provinces?

If I got it right, you could look into r.in.srtm script. A SRTM tile position
is derived from the *name* of the tile.

Markus

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On 19/09/12 13:46, Markus Neteler wrote:

On Wed, Sep 19, 2012 at 12:20 PM, Rainer M Krug <r.m.krug@gmail.com> wrote:

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Hi

I have received from somebody a list of quarter degree squares located in South Africa. Is
there any easy way of plotting these into a map together with the borders of South Africa and
the provinces?

If I got it right, you could look into r.in.srtm script. A SRTM tile position is derived from
the *name* of the tile.

Thanks.

In the manual of r.in.srtm, it says "SRTM tiles are of 1 degree by 1 degree size.", but my
references refer to quarter degree squares - can I use this as well? Could I get some guidance how?

Rainer

Markus

- --
Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology, UCT), Dipl. Phys.
(Germany)

Centre of Excellence for Invasion Biology
Stellenbosch University
South Africa

Tel : +33 - (0)9 53 10 27 44
Cell: +33 - (0)6 85 62 59 98
Fax : +33 - (0)9 58 10 27 44

Fax (D): +49 - (0)3 21 21 25 22 44

email: Rainer@krugs.de

Skype: RMkrug
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Hi Rainer

your qds attached.

Red block is 2434CB

you can get the full grid from . Some cells along coasts and borders are irregular.

(attachments)

sa_qds.tar.gz (1.07 KB)

···

On 19/09/2012 12:20, Rainer M Krug wrote:

I have received from somebody a list of quarter degree squares located in South Africa. Is there
any easy way of plotting these into a map together with the borders of South Africa and the
provinces? The second part (the borders) should not be the problem, but how can I convert the list
of qds into a raster / point layer?

The list looks as follow:

   3030CC
   3129BB
   3129BD
   3129DA
   3130AA
   3218DB
   3318BC
   3318CB

And no, I don't think there is the option to get a different format - closed source software,
custom build, and developer left....... No Comment.

www.ngi.gov.za

-- 
regards

Gavin

Gavin Fleming
[http://afrispatial.co.za](http://afrispatial.co.za)
t: 0218620670
c: 0845965680
f: 0866164820 

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On 20/09/12 00:10, Gavin Fleming wrote:

Hi Rainer

your qds attached.

Red block is 2434CB

Thanks - but I have a few blocks more. Where can I download the whole map of the qds? I am
browsing through NGI.gov.za at the moment, but can't find it - if the map is in vector format, one
polygon per qds, I could digitize the qds I have - they are not that many (but more then in the
email). Did you do the shp file manually or automatic?

Thanks,

Rainer

On 19/09/2012 12:20, Rainer M Krug wrote:

I have received from somebody a list of quarter degree squares located in South Africa. Is
there any easy way of plotting these into a map together with the borders of South Africa
and the provinces? The second part (the borders) should not be the problem, but how can I
convert the list of qds into a raster / point layer?

The list looks as follow:

3030CC 3129BB 3129BD 3129DA 3130AA 3218DB 3318BC 3318CB

And no, I don't think there is the option to get a different format - closed source software,
custom build, and developer left....... No Comment.

you can get the full grid from www.ngi.gov.za. Some cells along coasts and borders are
irregular.

-- regards

Gavin

Gavin Fleming http://afrispatial.co.za t: 0218620670 c: 0845965680 f: 0866164820

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