Add high resolution satellite imagery layer for Alaska

[julietcohen]

Leslie Jones from the State of Alaska Open Data Geoportal shared high resolution (50 cm) satellite imagery base layers that covers Alaska. RGB data and CIR data is available in both WMTS and WMS formats.

We should try to add this data as a layer to the PDG, with the capability of displaying the layer above the Bing imagery and below the data layers.

[mbjones]

I experimented with the WMTS version of this data in QGIS and it worked well from this WMTS URI:

https://geoportal.alaska.gov/arcgis/rest/services/ahri_2020_rgb_cache/MapServer/WMTS/1.0.0/WMTSCapabilities.xml

@iannesbitt we should add this to the DRP portal and position it above the Bing layer, and @julietcohen let's discuss that same thing for the PDG portal -- I think its generally an improvement over Bing. Do you see any downsides of providing it? If not, then maybe we could ask @justinkadi to add this to both portals (which would help learn how to edit portal docs)?

[mbjones]

@robyngit Could you configure this layer via it's WMTS URI for the PDG portal?

[robyngit]

This is now on the PDG portal, added with the following map config:

{
  "visible": false,
  "type": "WebMapTileServiceImageryProvider",
  "label": "Alaska High Resolution Imagery",
  "description": "A detailed and accurate color imagery of the State of Alaska, featuring a resolution of 50cm with images having less than 10% cloud cover.",
  "citation": "Alaska High Resolution Imagery (RGB). 2022. Maxar Products. Maxar Technologies Inc., Alaska Geospatial Office, USGS.",
  "moreInfoLink": "https://gis.data.alaska.gov/pages/imagery",
  "downloadLink": "https://geoportal.alaska.gov/portal/home/item.html?id=d462231cc1454e1abb2dccd9a709a476#overview",
  "cesiumOptions": {
    "url": "https://geoportal.alaska.gov/arcgis/rest/services/ahri_2020_rgb_cache/MapServer/WMTS/tile/1.0.0/ahri_2020_rgb_cache/default/GoogleMapsCompatible/{TileMatrix}/{TileRow}/{TileCol}"
  }
},

Set it to hidden by default otherwise it looks a bit strange with the open street maps

[iannesbitt]

Note @robyngit @mbjones: the citation field should be changed to attribution in order for MetacatUI to display the citation info:

{
  "visible": false,
  "type": "WebMapTileServiceImageryProvider",
  "label": "Alaska High Resolution Imagery",
  "description": "A detailed and accurate color imagery of the State of Alaska, featuring a resolution of 50cm with images having less than 10% cloud cover.",
-  "citation": "Alaska High Resolution Imagery (RGB). 2022. Maxar Products. Maxar Technologies Inc., Alaska Geospatial Office, USGS.",
+  "attribution": "Alaska High Resolution Imagery (RGB). 2022. Maxar Products. Maxar Technologies Inc., Alaska Geospatial Office, USGS.",
  "moreInfoLink": "https://gis.data.alaska.gov/pages/imagery",
  "downloadLink": "https://geoportal.alaska.gov/portal/home/item.html?id=d462231cc1454e1abb2dccd9a709a476#overview",
  "cesiumOptions": {
    "url": "https://geoportal.alaska.gov/arcgis/rest/services/ahri_2020_rgb_cache/MapServer/WMTS/tile/1.0.0/ahri_2020_rgb_cache/default/GoogleMapsCompatible/{TileMatrix}/{TileRow}/{TileCol}"
  }
},