[GRASS-user] Importing NAIP from WMS?

[Jeff McKenna]

Followup:  I was able to get the NAIP California WMS service working 
with GRASS, here were my steps:

- installed winGRASS 7.3-dev from 
https://wingrass.fsv.cvut.cz/grass73/x86_64/

- followed steps in the manual to execute a GetCapabilities request:

    - in "Console" tab, executed this command:

          r.in.wms -c 
url=https://gis.apfo.usda.gov/arcgis/services/NAIP/California_2016_60cm/ImageServer/WMSServer?

- then used the "Add web service layer" menu item in GRASS:

    - File/Map display/Add web service layer

    - in the "Server" box enter: 
https://gis.apfo.usda.gov/arcgis/services/NAIP/California_2016_60cm/ImageServer/WMSServer? 
and click "Connect"

    - wait for GetCapabilities to be parsed

    - you should see a new dialogue window below open, with a layer listed

    - click on the layer, select "EPSG:4326" as your source projection 
(assuming you have setup a GRASS location for that projection), select 
"png", and press "Add Layer"

- the California image should appear in your map display

- note that I used another WMS service to load the world continents 
(such as http://demo.mapserver.org/cgi-bin/wms?) and then zoomed into 
California extents that way, so I could see that layer

- should look like: https://pasteboard.co/GznOi0u.png

Hope that helps!  Have a good week (and happy late Canada Day!!)

-jeff



-- 
Jeff McKenna
MapServer Consulting and Training Services
http://www.gatewaygeomatics.com/



On 2017-07-04 9:41 AM, Jeff McKenna wrote:
> Hi Jeshua,
> 
> I haven't tested r.in.wms yet, but I can help you to learn about the WMS 
> layers:
> 
> - as the r.in.wms manual[1] states, you must always look at the 
> capabilities of the WMS service to get the layer names
> 
> - a list of NAIP services can be found at 
> https://gis.apfo.usda.gov/arcgis/rest/services/NAIP/
> 
> - clicking on the NAIP/California service, on the resulting page there 
> will be a small "WMS" link in the top left of the page, this is the 
> GetCapabilities for that service, click it 
> (https://gis.apfo.usda.gov/arcgis/services/NAIP/California_2016_60cm/ImageServer/WMSServer?request=GetCapabilities&service=WMS) 
> 
> 
> - look for a <layer> <name> parameter in that response.  Unfortunately 
> ArcGIS services are awful for metadata, so you can see here that the 
> layer is named "0"  (lovely, so very helpful, ha).
> 
> - if you want another way to find your WMS layer names, use that service 
> in QGIS and click on the "Add WMS layer" button, create a new 
> connection, and use this for the URL: 
> https://gis.apfo.usda.gov/arcgis/services/NAIP/California_2016_60cm/ImageServer/WMSServer? 
> 
> 
> Hope that helps.
> 
> [1] https://grass.osgeo.org/grass73/manuals/r.in.wms.html
> 
> -jeff
> 
> 
>