Arcade expression that returns a Google Street View link for a given feature.

gsv_arcade_point.js

// =================================================================== //
// Arcade Google Street View Point                                     //
// by Elliott Plack (eplack@mdot.maryland.gov)                         //
// Description:                                                        //
//   ArcGIS Arcade expression that returns a Google Street View URL    //
//   at a point's location. Add it to the point layer's attributes and //
//   then reference the link as a URL in the popup.                    //
// =================================================================== //

function MetersToLatLon(x, y) {
    // Converts XY point from Spherical Mercator EPSG:900913 to lat/lon in WGS84 Datum
    // Source: http://www.maptiler.org/google-maps-coordinates-tile-bounds-projection/
	 // Source: https://community.esri.com/thread/222695-latlong-unit-conversion-with-arcade#comment-806053
    var originShift = 2.0 * PI * 6378137.0 / 2.0;

    var lon = (x / originShift) * 180.0;
    var lat = (y / originShift) * 180.0;

    lat = 180.0 / PI * (2.0 * Atan( Exp( lat * PI / 180.0)) - PI / 2.0);
    return [lat, lon];
}

function CreateGSVURL(lat, lon) {
    return "https://www.google.com/maps/@?api=1&map_action=pano&viewpoint=" + lat + "," + lon
}

var latlon = MetersToLatLon(Geometry($feature).X, Geometry($feature).Y);
var url = CreateGSVURL(latlon[0], latlon[1]);
return url;

gsv_arcade_polygon.js

// =================================================================== //
// Arcade Google Street View Polygon                                   //
// by Elliott Plack (eplack@mdot.maryland.gov)                         //
// Description:                                                        //
//   ArcGIS Arcade expression that returns a Google Street View URL    //
//   at a polygon's centroid. Add it to the polygon layer's attributes //
//   and then reference the link as a URL in the popup.                //
// =================================================================== //


function MetersToLatLon(x, y) {
    // Converts XY point from Spherical Mercator EPSG:900913 to lat/lon in WGS84 Datum
     // Source: http://www.maptiler.org/google-maps-coordinates-tile-bounds-projection/
	 // Source: https://community.esri.com/thread/222695-latlong-unit-conversion-with-arcade#comment-806053
    var originShift = 2.0 * PI * 6378137.0 / 2.0;

    var lon = (x / originShift) * 180.0;
    var lat = (y / originShift) * 180.0;

    lat = 180.0 / PI * (2.0 * Atan( Exp( lat * PI / 180.0)) - PI / 2.0);
    return [lat, lon];
}

function CreateGSVURL(lat, lon) {
    return "https://www.google.com/maps/@?api=1&map_action=pano&viewpoint=" + lat + "," + lon
}

var latlon = MetersToLatLon(Centroid($feature).X, Centroid($feature).Y);
var url = CreateGSVURL(latlon[0], latlon[1]);
return url;