LIDAR Data
Answered
Hi,
I recently discovered that Vermont makes LIDAR data available on a mapping website, and it's invaluable for finding old manmade disturbances, like old logging roads. Is there a chance you could incorporate that into your databases?
Thanks
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Hey Tom Wild,
Thanks for reaching out.
We don't have any plans to add Vermont's LIDAR data to Gaia GPS.
However, you can import nearly any map you find on the internet yourself. This article gives instructions for the different ways to import custom map sources:
Specifically, you can import this source by following these steps:
A number of the LIDAR data files are available here: https://maps.vcgi.vermont.gov/arcgis/rest/services/EGC_services
To import the hillshade data you would use this URL:
To import the contour data you would use this URL:
These URLs are generated by following these steps:- Open the WTMS GetCapabilities XML file
- Find the template in the XML file
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Find the Style value which is "default"
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Find the TileMatrixSet value which is "default028mm"
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Update the template and set {TileMatrix}/{TileRow}/{TileCol} to {z}/{x}/{y}
- Copy & paste the URL from Step 5 into the custom map source import page
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Update the coordinates in the preview map to somewhere in Vermont
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Adjust the order of {z}/{x}/{y} until the tiles are displayed in the preview map
Click the "Help" button at the bottom of the screen if you have any questions.0 -
Thanks for the detailed reply. I have imported maps, but didn't know the procedure for extracting the data.
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Can you answer a similar question regarding Creating a Custom Map Layer from USGS 3DEP Lidar? It's much higher resolution than the existing US Shaded Relief layers.
I found this, but don't see how to import it:
https://elevation.nationalmap.gov/arcgis/services/3DEPElevation/ImageServer/WMSServer?FORMAT=image/png32&TRANSPARENT=TRUE&VERSION=1.3.0&SERVICE=WMS&REQUEST=GetMap&LAYERS=3DEPElevation:Hillshade Multidirectional&STYLES=&CRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}
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pghbridges, Were you able to make any progress on this issue. I am struggling with it also.
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No. Seems to be many of these sources that don't offer (or show how to convert to) the {z}/{y}/{x} format.
And still haven't found answer for add PEMA aerial layers. They used to work, but then they didn't.
I found these that work in the JOSM app (for editing OpenStreetMap). But they are not in the format that will work in Gaia GPS.
The Gaia GPS app requires it to be in this format with {z}/{y}/{x}
This used to work:
PHOTO US PEMA Orthoimagery [2018-2020] (RGB)[US] ('United States) - https://imagery.pasda.psu.edu/arcgis/services/pasda/PEMAImagery2018_2020/MapServer/WMSServer?FORMAT=image/jpeg&VERSION=1.3.0&SERVICE=WMS&REQUEST=GetMap&LAYERS=1&STYLES=&CRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox} - WMS wms[20]:https://imagery.pasda.psu.edu/arcgis/services/pasda/PEMAImagery2018_2020/MapServer/WMSServer?FORMAT=image/jpeg&VERSION=1.3.0&SERVICE=WMS&REQUEST=GetMap&LAYERS=1&STYLES=&CRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}
PHOTO US PEMA Orthoimagery - Western [2022][US] ('United States) - https://imagery.pasda.psu.edu/arcgis/services/pasda/PEMAImagery2022/MapServer/WMSServer?FORMAT=image/jpeg&VERSION=1.3.0&SERVICE=WMS&REQUEST=GetMap&LAYERS=8,2&STYLES=&CRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox} - WMS wms[20]:https://imagery.pasda.psu.edu/arcgis/services/pasda/PEMAImagery2022/MapServer/WMSServer?FORMAT=image/jpeg&VERSION=1.3.0&SERVICE=WMS&REQUEST=GetMap&LAYERS=8,2&STYLES=&CRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}
PHOTO US PEMA Orthoimagery - Eastern [2020-2021][US] ('United States) - https://imagery.pasda.psu.edu/arcgis/services/pasda/PEMAImagery2021/MapServer/WMSServer?FORMAT=image/jpeg&VERSION=1.3.0&SERVICE=WMS&REQUEST=GetMap&LAYERS=1&STYLES=&CRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox} - WMS wms[20]:https://imagery.pasda.psu.edu/arcgis/services/pasda/PEMAImagery2021/MapServer/WMSServer?FORMAT=image/jpeg&VERSION=1.3.0&SERVICE=WMS&REQUEST=GetMap&LAYERS=1&STYLES=&CRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}
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pghbridges,Thanks for your response. It's very frustrating. I've been trying to bring USGS lidar info into Gaia for finding old abandoned logging roads for off-trail hiking here in Arkansas. No Success. The Gaia shaded relief map is a very low resolution version of the USGS data. The onX Backcountry topographic basemap has the lidar info at much better res than Gaia but not as good as USGS. Still looking for a solution.0
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I figured out the problem with the PEMA aerial. They had removed "pasda/" from the URL. This works now: https://apps.pasda.psu.edu/arcgis/rest/services/PEMAImagery2018_2020/MapServer/tile/{z}/{y}/{x}
For USGS, I found this cached map server: https://basemap.nationalmap.gov/arcgis/rest/services/USGSShadedReliefOnly/MapServer
And clicking on the first Tile Info Level ID link, gives this URL and image: https://basemap.nationalmap.gov/arcgis/rest/services/USGSShadedReliefOnly/MapServer/tile/0/0/0
But swapping out the 0/0/0 for {z}/{y}/{x} isn't showing me anything in GaiaGPS. Toggling "Reversed Y Coordinate" didn't help. It seems like the answer is so close...
When you see how detailed the USGS imagery is...
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Update -- this URL does work:
https://basemap.nationalmap.gov/arcgis/rest/services/USGSShadedReliefOnly/MapServer/tile/{z}/{y}/{x}
But since GaiaGPS only goes to Level 19, it doesn't give the full level of detail that's available here: https://www.arcgis.com/apps/mapviewer/index.html?url=https://elevation.nationalmap.gov/arcgis/rest/services/3DEPElevation/ImageServer&source=sd
This following works for USGS topo National Map:
https://basemap.nationalmap.gov/arcgis/rest/services/USGSTopo/MapServer/tile/{z}/{y}/{x}
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Yes, it seems like you're very close. Your url for TNM topo works wells. I got your shaded relief url to work also but the res is very poor.
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