From openstreetmap at firefishy.com  Tue Jul  2 05:51:53 2024
From: openstreetmap at firefishy.com (Grant Slater)
Date: Tue, 2 Jul 2024 13:51:53 +0100
Subject: [OSGeo Africa] South African NGI 25cm Imagery available online
In-Reply-To: <CAGXuowhR-wDrr6NQJvYPTXFA_LPPDc9R2bTHAYYNRjirnbhAEQ@mail.gmail.com>
References: <CAGXuowhR-wDrr6NQJvYPTXFA_LPPDc9R2bTHAYYNRjirnbhAEQ@mail.gmail.com>
Message-ID: <CAGXuowgmnsVO4OOMF1_dcYsPh-qvFRoLo4ocPVXZsc=rSpoW0A@mail.gmail.com>

Hi OSGeo Africa,

Since 2017, the South African National Geo-spatial Information (NGI)
has been capturing and making available aerial imagery at an
impressive 25cm resolution. NGI is nearing the completion of capturing
the entire country at this resolution. More details can be found here:
https://ngi.dalrrd.gov.za/index.php/what-we-do/aerial-photography-and-imagery/35-colour-digital-aerial-imagery-at-0-5m-gsd-2008-2016-and-0-25m-gsd-2017-current

Through multiple trips to the NGI office in Cape Town, I, along with
others, have collected copies of this imagery. To help with this task,
I had to purchase a 22TB external drive.

I have now processed the imagery and made it available online:

https://aerial.openstreetmap.org.za/

For further discussion about the imagery, visit: OpenStreetMap Community:
https://community.openstreetmap.org/t/new-25cm-aerial-photos-available-from-chief-directorate-national-geo-spatial-information-cd-ngi/8452/28

QGIS Users:
Here are notes on how to use the imagery in QGIS:
https://kartoza.com/blog/qgis/how-to-easily-add-south-african-and-namibian-toposheets-as-xyz-tiles-to-qgis
Use this URL: https://aerial.openstreetmap.org.za/layer/ngi-aerial/{z}/{x}/{y}.jpg
(TMS top-left origin)

Fun Facts:
* Number of source image files: 44,305 (more when 25cm coverage is completed)
* Cost of 22TB external disk: R8900 (on promotion)
* Source imagery projection: Transverse Mercator Lo17 to Lo33
* Source size: 13,264GB
* Time for conversion to Cloud Optimised GeoTIFF (COG): 55+ days
* COGs with WEBP compression (as used by site): 2,442GB
* Total pixels: Over 21 billion (21,000,000+ megapixels)
* Software stack: gdal, titiler, nginx, podman

Support / Donations:
Hosting is kindly supported by the OpenStreetMap.org project and
INX-ZA. Donations to support other expenses would be greatly
appreciated.
Donate via PayPal: https://paypal.me/firefishy
FNB banking account details: Available on request

A huge thank you to National Geo-spatial Information (NGI) and the
Department of Agriculture, Land Reform and Rural Development (DALRRD)
for providing this fantastic aerial imagery. Special thanks to Adrian,
Glenn, and Zander for their help with the logistics.

Kind regards,

Grant

From patrick at compuplot.com  Tue Jul  2 23:14:48 2024
From: patrick at compuplot.com (Patrick Ric-Hansen)
Date: Wed, 3 Jul 2024 06:14:48 +0000
Subject: [OSGeo Africa] South African NGI 25cm Imagery available online
In-Reply-To: <CAGXuowgmnsVO4OOMF1_dcYsPh-qvFRoLo4ocPVXZsc=rSpoW0A@mail.gmail.com>
References: <CAGXuowhR-wDrr6NQJvYPTXFA_LPPDc9R2bTHAYYNRjirnbhAEQ@mail.gmail.com>
 <CAGXuowgmnsVO4OOMF1_dcYsPh-qvFRoLo4ocPVXZsc=rSpoW0A@mail.gmail.com>
Message-ID: <PAVPR05MB983065071859185F3A7E2AA9A0DD2@PAVPR05MB9830.eurprd05.prod.outlook.com>

Hi Grant,

Are you providing a web map service for this imagery?

KInd regards,


Patrick Ric-Hansen

GIS Practitioner PGP0122

Compuplot



[cid:65387119-16b7-4611-87fc-fb60047a4f7a]<https://www.compuplot.com/>  https://www.compuplot.com/



[Mobile]   27+82 442 3077

[email]   patrick at compuplot.com<mailto:patrick at compuplot.com>



[squarico15]<https://www.facebook.com/compuplot>

?


________________________________
From: Africa <africa-bounces at lists.osgeo.org> on behalf of Grant Slater via Africa <africa at lists.osgeo.org>
Sent: Tuesday, 02 July 2024 14:51
To: Africa local chapter discussions <africa at lists.osgeo.org>
Cc: Grant Slater <openstreetmap at firefishy.com>
Subject: [OSGeo Africa] South African NGI 25cm Imagery available online

Hi OSGeo Africa,

Since 2017, the South African National Geo-spatial Information (NGI)
has been capturing and making available aerial imagery at an
impressive 25cm resolution. NGI is nearing the completion of capturing
the entire country at this resolution. More details can be found here:
https://ngi.dalrrd.gov.za/index.php/what-we-do/aerial-photography-and-imagery/35-colour-digital-aerial-imagery-at-0-5m-gsd-2008-2016-and-0-25m-gsd-2017-current

Through multiple trips to the NGI office in Cape Town, I, along with
others, have collected copies of this imagery. To help with this task,
I had to purchase a 22TB external drive.

I have now processed the imagery and made it available online:

https://aerial.openstreetmap.org.za/

For further discussion about the imagery, visit: OpenStreetMap Community:
https://community.openstreetmap.org/t/new-25cm-aerial-photos-available-from-chief-directorate-national-geo-spatial-information-cd-ngi/8452/28

QGIS Users:
Here are notes on how to use the imagery in QGIS:
https://kartoza.com/blog/qgis/how-to-easily-add-south-african-and-namibian-toposheets-as-xyz-tiles-to-qgis
Use this URL: https://aerial.openstreetmap.org.za/layer/ngi-aerial/{z}/{x}/{y}.jpg
(TMS top-left origin)

Fun Facts:
* Number of source image files: 44,305 (more when 25cm coverage is completed)
* Cost of 22TB external disk: R8900 (on promotion)
* Source imagery projection: Transverse Mercator Lo17 to Lo33
* Source size: 13,264GB
* Time for conversion to Cloud Optimised GeoTIFF (COG): 55+ days
* COGs with WEBP compression (as used by site): 2,442GB
* Total pixels: Over 21 billion (21,000,000+ megapixels)
* Software stack: gdal, titiler, nginx, podman

Support / Donations:
Hosting is kindly supported by the OpenStreetMap.org project and
INX-ZA. Donations to support other expenses would be greatly
appreciated.
Donate via PayPal: https://paypal.me/firefishy
FNB banking account details: Available on request

A huge thank you to National Geo-spatial Information (NGI) and the
Department of Agriculture, Land Reform and Rural Development (DALRRD)
for providing this fantastic aerial imagery. Special thanks to Adrian,
Glenn, and Zander for their help with the logistics.

Kind regards,

Grant
_______________________________________________
Africa mailing list
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/20240703/77020f59/attachment-0001.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: Outlook-btgo2rnl.png
Type: image/png
Size: 1475 bytes
Desc: Outlook-btgo2rnl.png
URL: <http://lists.osgeo.org/pipermail/africa/attachments/20240703/77020f59/attachment-0004.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: Outlook-Mobile.png
Type: image/png
Size: 347 bytes
Desc: Outlook-Mobile.png
URL: <http://lists.osgeo.org/pipermail/africa/attachments/20240703/77020f59/attachment-0005.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: Outlook-email.png
Type: image/png
Size: 542 bytes
Desc: Outlook-email.png
URL: <http://lists.osgeo.org/pipermail/africa/attachments/20240703/77020f59/attachment-0006.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: Outlook-squarico15.png
Type: image/png
Size: 516 bytes
Desc: Outlook-squarico15.png
URL: <http://lists.osgeo.org/pipermail/africa/attachments/20240703/77020f59/attachment-0007.png>

From gerhardus.geldenhuis at gmail.com  Tue Jul  2 23:30:28 2024
From: gerhardus.geldenhuis at gmail.com (Gerhardus Geldenhuis)
Date: Wed, 3 Jul 2024 07:30:28 +0100
Subject: [OSGeo Africa] South African NGI 25cm Imagery available online
In-Reply-To: <CAGXuowgmnsVO4OOMF1_dcYsPh-qvFRoLo4ocPVXZsc=rSpoW0A@mail.gmail.com>
References: <CAGXuowhR-wDrr6NQJvYPTXFA_LPPDc9R2bTHAYYNRjirnbhAEQ@mail.gmail.com>
 <CAGXuowgmnsVO4OOMF1_dcYsPh-qvFRoLo4ocPVXZsc=rSpoW0A@mail.gmail.com>
Message-ID: <CAATm_0pcHW355HFyLw5UfGJ7vGbDcra5ZonESnk=HdRMw4cN_A@mail.gmail.com>

Hi Grant,
Just a small public thank you for all the effort and personal money that
you have invested in this project and also to everyone else that has helped
with getting this done. It is not just the cost but also the many many
hours of work that has gone into making this an easy to use resource for
the rest of us.

I also want to make this a call to arms, for anyone that benefits from this
work personally or as a GIS professional using this, to consider making a
contribution towards Grant's personal expenses.

Regards

On Tue, 2 Jul 2024 at 13:52, Grant Slater via Africa <africa at lists.osgeo.org>
wrote:

> Hi OSGeo Africa,
>
> Since 2017, the South African National Geo-spatial Information (NGI)
> has been capturing and making available aerial imagery at an
> impressive 25cm resolution. NGI is nearing the completion of capturing
> the entire country at this resolution. More details can be found here:
>
> https://ngi.dalrrd.gov.za/index.php/what-we-do/aerial-photography-and-imagery/35-colour-digital-aerial-imagery-at-0-5m-gsd-2008-2016-and-0-25m-gsd-2017-current
>
> Through multiple trips to the NGI office in Cape Town, I, along with
> others, have collected copies of this imagery. To help with this task,
> I had to purchase a 22TB external drive.
>
> I have now processed the imagery and made it available online:
>
> https://aerial.openstreetmap.org.za/
>
> For further discussion about the imagery, visit: OpenStreetMap Community:
>
> https://community.openstreetmap.org/t/new-25cm-aerial-photos-available-from-chief-directorate-national-geo-spatial-information-cd-ngi/8452/28
>
> QGIS Users:
> Here are notes on how to use the imagery in QGIS:
>
> https://kartoza.com/blog/qgis/how-to-easily-add-south-african-and-namibian-toposheets-as-xyz-tiles-to-qgis
> Use this URL:
> https://aerial.openstreetmap.org.za/layer/ngi-aerial/{z}/{x}/{y}.jpg
> (TMS top-left origin)
>
> Fun Facts:
> * Number of source image files: 44,305 (more when 25cm coverage is
> completed)
> * Cost of 22TB external disk: R8900 (on promotion)
> * Source imagery projection: Transverse Mercator Lo17 to Lo33
> * Source size: 13,264GB
> * Time for conversion to Cloud Optimised GeoTIFF (COG): 55+ days
> * COGs with WEBP compression (as used by site): 2,442GB
> * Total pixels: Over 21 billion (21,000,000+ megapixels)
> * Software stack: gdal, titiler, nginx, podman
>
> Support / Donations:
> Hosting is kindly supported by the OpenStreetMap.org project and
> INX-ZA. Donations to support other expenses would be greatly
> appreciated.
> Donate via PayPal: https://paypal.me/firefishy
> FNB banking account details: Available on request
>
> A huge thank you to National Geo-spatial Information (NGI) and the
> Department of Agriculture, Land Reform and Rural Development (DALRRD)
> for providing this fantastic aerial imagery. Special thanks to Adrian,
> Glenn, and Zander for their help with the logistics.
>
> Kind regards,
>
> Grant
> _______________________________________________
> Africa mailing list
> Africa at lists.osgeo.org
> You can UNSUBSCRIBE at https://lists.osgeo.org/mailman/listinfo/africa
>


-- 
Gerhardus Geldenhuis
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/africa/attachments/20240703/638bd647/attachment.htm>

From sokolic at worldonline.co.za  Tue Jul  2 23:29:42 2024
From: sokolic at worldonline.co.za (Frank Sokolic)
Date: Wed, 3 Jul 2024 08:29:42 +0200
Subject: [OSGeo Africa] South African NGI 25cm Imagery available online
In-Reply-To: <CAGXuowgmnsVO4OOMF1_dcYsPh-qvFRoLo4ocPVXZsc=rSpoW0A@mail.gmail.com>
References: <CAGXuowhR-wDrr6NQJvYPTXFA_LPPDc9R2bTHAYYNRjirnbhAEQ@mail.gmail.com>
 <CAGXuowgmnsVO4OOMF1_dcYsPh-qvFRoLo4ocPVXZsc=rSpoW0A@mail.gmail.com>
Message-ID: <992c190d-f836-4b9f-8a6d-49ba8a46d00d@worldonline.co.za>

Hi Grant,

Thanks for making this available. It's an amazing resource.

Frank.

On 2024/07/02 14:51, Grant Slater via Africa wrote:
> Hi OSGeo Africa,
>
> Since 2017, the South African National Geo-spatial Information (NGI)
> has been capturing and making available aerial imagery at an
> impressive 25cm resolution. NGI is nearing the completion of capturing
> the entire country at this resolution. More details can be found here:
> https://ngi.dalrrd.gov.za/index.php/what-we-do/aerial-photography-and-imagery/35-colour-digital-aerial-imagery-at-0-5m-gsd-2008-2016-and-0-25m-gsd-2017-current
>
> Through multiple trips to the NGI office in Cape Town, I, along with
> others, have collected copies of this imagery. To help with this task,
> I had to purchase a 22TB external drive.
>
> I have now processed the imagery and made it available online:
>
> https://aerial.openstreetmap.org.za/
>
> For further discussion about the imagery, visit: OpenStreetMap Community:
> https://community.openstreetmap.org/t/new-25cm-aerial-photos-available-from-chief-directorate-national-geo-spatial-information-cd-ngi/8452/28
>
> QGIS Users:
> Here are notes on how to use the imagery in QGIS:
> https://kartoza.com/blog/qgis/how-to-easily-add-south-african-and-namibian-toposheets-as-xyz-tiles-to-qgis
> Use this URL: https://aerial.openstreetmap.org.za/layer/ngi-aerial/{z}/{x}/{y}.jpg
> (TMS top-left origin)
>
> Fun Facts:
> * Number of source image files: 44,305 (more when 25cm coverage is completed)
> * Cost of 22TB external disk: R8900 (on promotion)
> * Source imagery projection: Transverse Mercator Lo17 to Lo33
> * Source size: 13,264GB
> * Time for conversion to Cloud Optimised GeoTIFF (COG): 55+ days
> * COGs with WEBP compression (as used by site): 2,442GB
> * Total pixels: Over 21 billion (21,000,000+ megapixels)
> * Software stack: gdal, titiler, nginx, podman
>
> Support / Donations:
> Hosting is kindly supported by the OpenStreetMap.org project and
> INX-ZA. Donations to support other expenses would be greatly
> appreciated.
> Donate via PayPal: https://paypal.me/firefishy
> FNB banking account details: Available on request
>
> A huge thank you to National Geo-spatial Information (NGI) and the
> Department of Agriculture, Land Reform and Rural Development (DALRRD)
> for providing this fantastic aerial imagery. Special thanks to Adrian,
> Glenn, and Zander for their help with the logistics.
>
> Kind regards,
>
> Grant
> _______________________________________________
> Africa mailing list
> Africa at lists.osgeo.org
> You can UNSUBSCRIBE at https://lists.osgeo.org/mailman/listinfo/africa