Re: [OSM-Talk-ZA] Updated CD:NGI Aerial Imagery Now Available
On 31 January 2013 19:35, Gerhardus Geldenhuis wrote: > Hi > Is there an easy way of seeing the age of the CD:NGI image in JOSM? Show > tile info only shows the tile name and zoom level. > Not currently. I'm working on adding an overlay (transparent layer) which will show the year the imagery was captured in. I only have the year the imagery was captured in. Roughly the imagery is as follows: * Western Cape: 2009/2010 * Northern Cape (Northern Section): 2008/2009 * Northern Cape (rest): 2010/2011 * Eastern Cape: 2011/2012 * KZN: 2008/2009 * Free State (west): 2008 * Free State (east): 2010/2011 * Gauteng: 2011/2012 * North West: 2009/2010 * Limpopo: 2011/2012 * Mpumalanga: 2011/2012 Medupi power station was captured in Q1 2012. / Grant ___ Talk-ZA mailing list Talk-ZA@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-za
Re: [OSM-Talk-ZA] Updated CD:NGI Aerial Imagery Now Available
Hi Is there an easy way of seeing the age of the CD:NGI image in JOSM? Show tile info only shows the tile name and zoom level. Regards On 10 January 2013 15:39, Craig Leat wrote: > > You are using EPSG:4326 projection instead of EPSG:3857 > > Use this file in QGIS as the raster layer: > > http://aerial.openstreetmap.org.za/aerial-osm-org-za-tiles.xml (save > > it locally first) > > Thanks Grant, > > Your xml file works well. Qgis is just much slower than my browser to > load the data :( > > Regards, > > Craig > > ___ > Talk-ZA mailing list > Talk-ZA@openstreetmap.org > http://lists.openstreetmap.org/listinfo/talk-za > -- Gerhardus Geldenhuis ___ Talk-ZA mailing list Talk-ZA@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-za
Re: [OSM-Talk-ZA] Updated CD:NGI Aerial Imagery Now Available
> You are using EPSG:4326 projection instead of EPSG:3857 > Use this file in QGIS as the raster layer: > http://aerial.openstreetmap.org.za/aerial-osm-org-za-tiles.xml (save > it locally first) Thanks Grant, Your xml file works well. Qgis is just much slower than my browser to load the data :( Regards, Craig ___ Talk-ZA mailing list Talk-ZA@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-za
Re: [OSM-Talk-ZA] Updated CD:NGI Aerial Imagery Now Available
On 10 January 2013 13:59, Craig Leat wrote:
> I tried pulling the new aerial imagery into qgis using the TMS driver,
> but the data is not scaling correctly.
>
> Here's the content of my xml file:
>
>
>
> http://c.aerial.openstreetmap.org.za/ngi-aerial/${z}/${x}/${y}.jpg
>
>
> 16
> -21
> 33
> -35
> 19
> 1
> 1
> top
>
> EPSG:4326
> 256
> 256
> 3
>
>
> The attached image shows the problem.
You are using EPSG:4326 projection instead of EPSG:3857
Use this file in QGIS as the raster layer:
http://aerial.openstreetmap.org.za/aerial-osm-org-za-tiles.xml (save
it locally first)
Regards
Grant
___
Talk-ZA mailing list
Talk-ZA@openstreetmap.org
http://lists.openstreetmap.org/listinfo/talk-za
Re: [OSM-Talk-ZA] Updated CD:NGI Aerial Imagery Now Available
Thanks Grant, Great work, keep it up. John On 8 January 2013 16:19, Grant Slater wrote: > On 8 January 2013 14:01, John wrote: > > Hi Grant, > > > > The imagery is fantastic/ fast and VERY up to date. There is now no > excuse > > for being able to do accurate mapping on even the smallest of towns in > SA. > > > > Is the imagery updated as new images become available? It has to be newer > > than 2008, probably 2012 in some areas!! > > > > Yes, I will try keep the imagery updated as CD:NGI make additional > imagery available. All the imagery so far has been collected in person > from CD:NGI in Mowbray, Cape Town. The aerial.openstreetmap.org.za > server is located in London. > > Yes, over 45% of the imagery was captured in the last 2 years... > Breakdown: > - 2012: 17.8% > - 2011: 27.6% > - 2010: 21.1% > - 2009: 28.8% > - 2008: 4.7% > > / Grant > ___ Talk-ZA mailing list Talk-ZA@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-za
Re: [OSM-Talk-ZA] Updated CD:NGI Aerial Imagery Now Available
On 8 January 2013 14:01, John wrote: > Hi Grant, > > The imagery is fantastic/ fast and VERY up to date. There is now no excuse > for being able to do accurate mapping on even the smallest of towns in SA. > > Is the imagery updated as new images become available? It has to be newer > than 2008, probably 2012 in some areas!! > Yes, I will try keep the imagery updated as CD:NGI make additional imagery available. All the imagery so far has been collected in person from CD:NGI in Mowbray, Cape Town. The aerial.openstreetmap.org.za server is located in London. Yes, over 45% of the imagery was captured in the last 2 years... Breakdown: - 2012: 17.8% - 2011: 27.6% - 2010: 21.1% - 2009: 28.8% - 2008: 4.7% / Grant ___ Talk-ZA mailing list Talk-ZA@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-za
Re: [OSM-Talk-ZA] Updated CD:NGI Aerial Imagery Now Available
Hi Grant, The imagery is fantastic/ fast and VERY up to date. There is now no excuse for being able to do accurate mapping on even the smallest of towns in SA. Is the imagery updated as new images become available? It has to be newer than 2008, probably 2012 in some areas!! Regards, John On 2 January 2013 03:13, Grant Slater wrote: > On 31 December 2012 12:31, Grant Slater > wrote: > > > > The imagery should also finally be moved to a beefier/faster server > > within the next 24 hours. > > > > The imagery is now running on a much faster server. Let me know if > anyone experiences any issues. > > / Grant > > ___ > Talk-ZA mailing list > Talk-ZA@openstreetmap.org > http://lists.openstreetmap.org/listinfo/talk-za > ___ Talk-ZA mailing list Talk-ZA@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-za
Re: [OSM-Talk-ZA] Updated CD:NGI Aerial Imagery Now Available
Great stuff! I am on holiday in Graskop, and have not been reading mail, but JOSM told me about the imagery, and it works well. On Wed, Jan 2, 2013 at 3:13 AM, Grant Slater wrote: > On 31 December 2012 12:31, Grant Slater wrote: >> >> The imagery should also finally be moved to a beefier/faster server >> within the next 24 hours. >> > > The imagery is now running on a much faster server. Let me know if > anyone experiences any issues. > > / Grant > > ___ > Talk-ZA mailing list > Talk-ZA@openstreetmap.org > http://lists.openstreetmap.org/listinfo/talk-za -- David Richfield [[:en:User:Slashme]] +27718539985 ___ Talk-ZA mailing list Talk-ZA@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-za
Re: [OSM-Talk-ZA] Updated CD:NGI Aerial Imagery Now Available
On 31 December 2012 12:31, Grant Slater wrote: > > The imagery should also finally be moved to a beefier/faster server > within the next 24 hours. > The imagery is now running on a much faster server. Let me know if anyone experiences any issues. / Grant ___ Talk-ZA mailing list Talk-ZA@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-za
Re: [OSM-Talk-ZA] Updated CD:NGI Aerial Imagery Now Available
On 31 December 2012 12:39, Gerhardus Geldenhuis wrote: > Thanks for the efforts Grant. When you say errors, what does this mean? Does > it mean tracing using the imagery surrounding erross will be inaccurate? The imagery is great for tracing and normally of excellent positional accuracy. (Better than Bing Aerial in most cases) The errors are mistakes I have made or bugs in the source files leaving some sections blank. Example: http://aerial.openstreetmap.org.za/?zoom=10&lat=-31.2195&lon=23.25729&layers=B0 > Can > we help with conversion/fixing work? Naaa, I just need to go through it and work out what is causing the bug... I suspect a problem with the GeoReferencing on a small subset of the source files. > Out of curiosity are you using a "USB disk network" to move the data. That's > a lot of data even for fast UK > networks. > Yes, the imagery was collected using USB disks from CD:NGI's head office in Cape Town. The first set was brought to London by http://osm.org/user/Burger and the November updates were collected by me in person. / Grant ___ Talk-ZA mailing list Talk-ZA@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-za
Re: [OSM-Talk-ZA] Updated CD:NGI Aerial Imagery Now Available
Thanks for the efforts Grant. When you say errors, what does this mean? Does it mean tracing using the imagery surrounding erross will be inaccurate? Can we help with conversion/fixing work? Out of curiosity are you using a "USB disk network" to move the data. That's a lot of data even for fast UK networks. Regards On 31 December 2012 12:31, Grant Slater wrote: > Hi OSM ZA, > > Updated: http://aerial.openstreetmap.org.za/ > > Contains new imagery (collect from CD:NGI during November 2012) and > I've finally filled in most of the missing areas. > > Percentage of the imagery captured in the year: > - 2012: 17.8% > - 2011: 27.6% > - 2010: 21.1% > - 2009: 28.8% > - 2008: 4.7% > > The aerial imagery (as supplied) is 3004 GigaBytes and made up of > 45454 tiled GeoTIFF files. > Combined they would make an image: 3256402 x 2875186 pixels or 9.3 > Million Megapixel ;-) > > The imagery is available in JOSM and Potlatch2 as a background layer > using the "South Africa: CD:NGI Aerial" preset. > Please remember to add the "source=ngi-aerial" tag when using the > imagery. In Potlatch2 this can be done by pressing "B" when the new > imagery is set as the background. > > There are 3 errors I am aware of: > - Black missing strip near Victoria West, NC > - Black missing square near Villiers, FS > - 2 Black thin strips, 1: just east of Mooi River, KZN and 2: just > west of Greytown, KZN > The errors will get fixed when I have a chance, but are not currently > a high priority. > > The imagery should also finally be moved to a beefier/faster server > within the next 24 hours. > > Regards > Grant > > ___ > Talk-ZA mailing list > Talk-ZA@openstreetmap.org > http://lists.openstreetmap.org/listinfo/talk-za > -- Gerhardus Geldenhuis ___ Talk-ZA mailing list Talk-ZA@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-za
[OSM-Talk-ZA] Updated CD:NGI Aerial Imagery Now Available
Hi OSM ZA, Updated: http://aerial.openstreetmap.org.za/ Contains new imagery (collect from CD:NGI during November 2012) and I've finally filled in most of the missing areas. Percentage of the imagery captured in the year: - 2012: 17.8% - 2011: 27.6% - 2010: 21.1% - 2009: 28.8% - 2008: 4.7% The aerial imagery (as supplied) is 3004 GigaBytes and made up of 45454 tiled GeoTIFF files. Combined they would make an image: 3256402 x 2875186 pixels or 9.3 Million Megapixel ;-) The imagery is available in JOSM and Potlatch2 as a background layer using the "South Africa: CD:NGI Aerial" preset. Please remember to add the "source=ngi-aerial" tag when using the imagery. In Potlatch2 this can be done by pressing "B" when the new imagery is set as the background. There are 3 errors I am aware of: - Black missing strip near Victoria West, NC - Black missing square near Villiers, FS - 2 Black thin strips, 1: just east of Mooi River, KZN and 2: just west of Greytown, KZN The errors will get fixed when I have a chance, but are not currently a high priority. The imagery should also finally be moved to a beefier/faster server within the next 24 hours. Regards Grant ___ Talk-ZA mailing list Talk-ZA@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-za
