Tutorial: Reverse geocode

Learn how to find an address near a location with the geocoding service.

Reverse geocode coordinates to addresses with the geocoding service using API key authentication

Reverse geocoding is the process of converting a location to an address or place. To reverse geocode, you use the geocoding service and the reverseGeocode operation. This operation requires an initial location and returns an address with attributes such as place name and location.

Prerequisites

Steps

Get the starter app

Select a type of authentication below and follow the steps to create a new application.

You can choose one of the following to create a new CodePen:

  • Option 1: Complete the Display a scene tutorial; or,
  • Option 2: Start from the Display a scene tutorial .

Set up authentication

Create developer credentials in your portal for the type of authentication you selected.

Create a new API key credential with the correct privileges to access the resources used in this tutorial.

  1. Go to the Create an API key tutorial and create an API key with the following privilege(s):
    • Privileges
      • Location services > Basemaps
      • Location services > Geocoding
  2. Copy the API key access token to your clipboard when prompted.

Set developer credentials

Use the API key or OAuth developer credentials created in the previous step in your application.

  1. Add <script> elements in the HTML <body> and create an accessToken variable to store your access token. Set YOUR_ACCESS_TOKEN with the access token you previously copied from your API key credentials.

    Expand
    Use dark colors for code blocks
    1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    11
    12
    13
    14
    15
    16
    17
    18
    19
    20
    21
    22
    23
    24
    25
    26
    27
    28
    29
    30
    31
    32
    33
    34
    35
    36
    37
    38
    39
    40
    41
    42
    43
    44
    45
    46
    47
    48
    49
    50
    51
    52
    53
    54
    55
    56
    57
    58
    59
    60
    61
    62
    63
    64
    65
    66
    67
    68
    69
    70
    71
    72
    73
    74
    75
    76
    77
    78
    79
    80
    81
    82
      <script>
    
        /* Use for API key authentication */
        const accessToken = "YOUR_ACCESS_TOKEN";
    
      </script>
    
    Expand
  2. Set the defaultAccessToken included with Cesium to authenticate requests to the ArcGIS services used in this tutorial.

    Expand
    Use dark colors for code blocks
    1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    11
    12
    13
    14
    15
    16
    17
    18
    19
    20
    21
    22
    23
    24
    25
    26
    27
    28
    29
    30
    31
    32
    33
    34
    35
    36
    37
    38
    39
    40
    41
    42
    43
    44
    45
    46
    47
    48
    49
    50
    51
    52
    53
    54
    55
    56
    57
    58
    59
    60
    61
    62
    63
    64
    65
    66
    67
    68
    69
    70
    71
    72
    73
    74
    75
    76
    77
    78
    79
    80
    81
    82
      <script>
    
        /* Use for API key authentication */
        const accessToken = "YOUR_ACCESS_TOKEN";
    
        Cesium.ArcGisMapService.defaultAccessToken = accessToken;
    
      </script>
    
    Expand

Get a Cesium ion access token

All Cesium applications must use an access token provided through Cesium ion. This token allows you to access assets such as Cesium World Terrain in your application.

  1. Go to your Cesium ion dashboard to generate an access token. Copy the key to your clipboard.

  2. Create a cesiumAccessToken variable and replace YOUR_CESIUM_ACCESS_TOKEN with the access token you copied from the Cesium ion dashboard.

    Use dark colors for code blocks
    1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    11
    12
    13
    14
    15
    16
    17
    18
    19
    20
    21
    22
    23
    24
    25
    26
    27
    28
    29
    30
    31
    32
    33
    34
    35
    36
    37
    38
    39
    40
    41
    42
    43
    44
    45
    46
    47
    48
    49
    50
    51
    52
    53
    54
    55
    56
    57
    58
    59
    60
    61
    62
    63
    64
    65
    66
    67
    68
    69
    70
    71
    72
    73
    74
    75
    76
    77
    78
    79
    80
    81
    82
      <script>
    
        /* Use for API key authentication */
        const accessToken = "YOUR_ACCESS_TOKEN";
    
        // or
    
        /* Use for user authentication */
        // const session = await arcgisRest.ArcGISIdentityManager.beginOAuth2({
        //   clientId: "YOUR_CLIENT_ID", // Your client ID from OAuth credentials
        //   redirectUri: "YOUR_REDIRECT_URI", // The redirect URL registered in your OAuth credentials
        //   portal: "YOUR_PORTAL_URL" // Your portal URL
        // })
    
        // const accessToken = session.token;
    
        Cesium.ArcGisMapService.defaultAccessToken = accessToken;
    
        const cesiumAccessToken = "YOUR_CESIUM_ACCESS_TOKEN";
    
      </script>
    
  3. Configure Cesium.Ion.defaultAccessToken with the Cesium access token to validate the application.

    Use dark colors for code blocks
    1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    11
    12
    13
    14
    15
    16
    17
    18
    19
    20
    21
    22
    23
    24
    25
    26
    27
    28
    29
    30
    31
    32
    33
    34
    35
    36
    37
    38
    39
    40
    41
    42
    43
    44
    45
    46
    47
    48
    49
    50
    51
    52
    53
    54
    55
    56
    57
    58
    59
    60
    61
    62
    63
    64
    65
    66
    67
    68
    69
    70
    71
    72
    73
    74
    75
    76
    77
    78
    79
    80
    81
    82
      <script>
    
        /* Use for API key authentication */
        const accessToken = "YOUR_ACCESS_TOKEN";
    
        // or
    
        /* Use for user authentication */
        // const session = await arcgisRest.ArcGISIdentityManager.beginOAuth2({
        //   clientId: "YOUR_CLIENT_ID", // Your client ID from OAuth credentials
        //   redirectUri: "YOUR_REDIRECT_URI", // The redirect URL registered in your OAuth credentials
        //   portal: "YOUR_PORTAL_URL" // Your portal URL
        // })
    
        // const accessToken = session.token;
    
        Cesium.ArcGisMapService.defaultAccessToken = accessToken;
    
        const cesiumAccessToken = "YOUR_CESIUM_ACCESS_TOKEN";
    
        Cesium.Ion.defaultAccessToken = cesiumAccessToken;
    
      </script>
    

Add references to ArcGIS REST JS

  1. In the <head> element, reference the geocoding and request packages from ArcGIS REST JS.

    Expand
    Use dark colors for code blocks
    1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    11
    12
    13
    14
    15
    16
    17
    18
    19
    20
    21
    22
    23
    24
    25
    26
    27
    28
    29
    30
    31
    32
    33
    34
    35
    36
    37
    38
    39
    40
    41
    42
    43
    44
    45
    46
    47
    48
    49
    50
    51
    52
    53
    54
    55
    56
    57
    58
    59
    60
    61
    62
    63
    64
    65
    66
    67
        <script src="https://cesium.com/downloads/cesiumjs/releases/1.125/Build/Cesium/Cesium.js"></script>
        <link href="https://cesium.com/downloads/cesiumjs/releases/1.125/Build/Cesium/Widgets/widgets.css" rel="stylesheet">
    
        <script src="https://unpkg.com/@esri/arcgis-rest-request@4/dist/bundled/request.umd.js"></script>
        <script src="https://unpkg.com/@esri/arcgis-rest-geocoding@4/dist/bundled/geocoding.umd.js"></script>
    
    
    Expand

Update the scene

CesiumJS supports both 3D models and geocoding. Update the scene to display 3D buildings so you can visualize results from the geocoding service.

  1. Update the scene view to center on location [-122.4117, 37.769, 2000] in San Francisco, CA and change the orientation heading to -130.

    Use dark colors for code blocks
    1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    11
    12
    13
    14
    15
    16
    17
    18
    19
    20
    21
    22
    23
    24
    25
    26
    27
    28
    29
    30
    31
    32
    33
    34
    35
    36
    37
    38
    39
    40
    41
    42
    43
    44
    45
    46
    47
    48
    49
    50
    51
    52
    53
    54
    55
    56
    57
    58
    59
    60
    61
    62
    63
    64
    65
    66
    67
    68
    69
    70
    71
    72
    73
    74
    75
    76
    77
    78
    79
    80
    81
    82
    83
    84
    85
    86
    87
    88
    89
    90
    91
    92
    93
    94
    95
    96
    97
    98
    99
    100
    101
    102
    103
    104
    105
    106
    107
    108
    109
    110
    111
    112
    113
    114
    115
    116
    117
    118
    119
    120
    121
    122
    123
    124
    125
    126
    127
    128
    129
    130
    131
    132
    133
    134
    135
    136
    137
    138
    139
    140
    141
    142
    143
    144
    145
            viewer.camera.setView({
    
                destination: Cesium.Cartesian3.fromDegrees(-122.388805, 37.797517, 2000),
    
                orientation: {
    
                    heading: Cesium.Math.toRadians(-130),
    
                    pitch: Cesium.Math.toRadians(-70.0),
                }
            });
    
  2. Initialize a terrain provider called geoidService that references the Earth Gravitational Model EGM2008. This provider will allow for geoid conversion between the gravity-based 3D object layer and the ellipsoidal-based Cesium World Terrain.

    Expand
    Use dark colors for code blocks
    1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    11
    12
    13
    14
    15
    16
    17
    18
    19
    20
    21
    22
    23
    24
    25
    26
    27
    28
    29
    30
    31
    32
    33
    34
    35
    36
    37
    38
    39
    40
    41
    42
    43
    44
    45
    46
    47
    48
    49
    50
    51
    52
    53
    54
    55
    56
    57
    58
    59
    60
    61
    62
    63
    64
    65
    66
    67
    68
    69
    70
    71
    72
    73
    74
    75
    76
    77
    78
    79
    80
    81
    82
    83
    84
    85
    86
    87
    88
    89
    90
    91
    92
    93
    94
    95
    96
    97
    98
    99
    100
    101
    102
    103
    104
    105
    106
    107
    108
    109
    110
    111
    112
    113
    114
    115
    116
    117
    118
    119
    120
    121
    122
    123
    124
    125
    126
    127
    128
    129
    130
    131
    132
    133
    134
    135
    136
    137
    138
    139
    140
    141
    142
    143
    144
    145
            const geoidService = await Cesium.ArcGISTiledElevationTerrainProvider.fromUrl("https://tiles.arcgis.com/tiles/GVgbJbqm8hXASVYi/arcgis/rest/services/EGM2008/ImageServer");
    
    
    Expand
  3. Add the data attribution for the elevation layer source.

    • Go to the EGM2008 item.
    • Scroll down to the Credits (Attribution) section and copy its value.
    • Create an attribution property and paste the attribution value from the item.
      Expand
      Use dark colors for code blocks
      1
      2
      3
      4
      5
      6
      7
      8
      9
      10
      11
      12
      13
      14
      15
      16
      17
      18
      19
      20
      21
      22
      23
      24
      25
      26
      27
      28
      29
      30
      31
      32
      33
      34
      35
      36
      37
      38
      39
      40
      41
      42
      43
      44
      45
      46
      47
      48
      49
      50
      51
      52
      53
      54
      55
      56
      57
      58
      59
      60
      61
      62
      63
      64
      65
      66
      67
      68
      69
      70
      71
      72
      73
      74
      75
      76
      77
      78
      79
      80
      81
      82
      83
      84
      85
      86
      87
      88
      89
      90
      91
      92
      93
      94
      95
      96
      97
      98
      99
      100
      101
      102
      103
      104
      105
      106
      107
      108
      109
      110
      111
      112
      113
      114
      115
      116
      117
      118
      119
      120
      121
      122
      123
      124
      125
      126
      127
      128
      129
      130
      131
      132
      133
      134
      135
      136
      137
      138
      139
      140
      141
      142
      143
      144
      145
              const geoidService = await Cesium.ArcGISTiledElevationTerrainProvider.fromUrl("https://tiles.arcgis.com/tiles/GVgbJbqm8hXASVYi/arcgis/rest/services/EGM2008/ImageServer");
      
              // Attribution text retrieved from https://arcgis.com/home/item.html?id=d798c71512404bbb9c1551b827bf5467
              viewer.creditDisplay.addStaticCredit(new Cesium.Credit("National Geospatial-Intelligence Agency (NGA)", false));
      
      
      Expand
  4. Add the San Francisco 3D Buildings scene layer to visualize the city of San Francisco.

    Expand
    Use dark colors for code blocks
    1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    11
    12
    13
    14
    15
    16
    17
    18
    19
    20
    21
    22
    23
    24
    25
    26
    27
    28
    29
    30
    31
    32
    33
    34
    35
    36
    37
    38
    39
    40
    41
    42
    43
    44
    45
    46
    47
    48
    49
    50
    51
    52
    53
    54
    55
    56
    57
    58
    59
    60
    61
    62
    63
    64
    65
    66
    67
    68
    69
    70
    71
    72
    73
    74
    75
    76
    77
    78
    79
    80
    81
    82
    83
    84
    85
    86
    87
    88
    89
    90
    91
    92
    93
    94
    95
    96
    97
    98
    99
    100
    101
    102
    103
    104
    105
    106
    107
    108
    109
    110
    111
    112
    113
    114
    115
    116
    117
    118
    119
    120
    121
    122
    123
    124
    125
    126
    127
    128
    129
    130
    131
    132
    133
    134
    135
    136
    137
    138
    139
    140
    141
    142
    143
    144
    145
            const geoidService = await Cesium.ArcGISTiledElevationTerrainProvider.fromUrl("https://tiles.arcgis.com/tiles/GVgbJbqm8hXASVYi/arcgis/rest/services/EGM2008/ImageServer");
    
            // Attribution text retrieved from https://arcgis.com/home/item.html?id=d798c71512404bbb9c1551b827bf5467
            viewer.creditDisplay.addStaticCredit(new Cesium.Credit("National Geospatial-Intelligence Agency (NGA)", false));
    
            const i3sProvider = await Cesium.I3SDataProvider.fromUrl("https://tiles.arcgis.com/tiles/z2tnIkrLQ2BRzr6P/arcgis/rest/services/SanFrancisco_Bldgs/SceneServer", {
                geoidTiledTerrainProvider: geoidService
            });
            viewer.scene.primitives.add(i3sProvider);
    
    
    Expand
  5. Add the data attribution for the scene layer source.

    • Go to the San Francisco 3D Objects item.
    • Scroll down to the Credits (Attribution) section and copy its value.
    • Create an attribution property and paste the attribution value from the item.
      Expand
      Use dark colors for code blocks
      1
      2
      3
      4
      5
      6
      7
      8
      9
      10
      11
      12
      13
      14
      15
      16
      17
      18
      19
      20
      21
      22
      23
      24
      25
      26
      27
      28
      29
      30
      31
      32
      33
      34
      35
      36
      37
      38
      39
      40
      41
      42
      43
      44
      45
      46
      47
      48
      49
      50
      51
      52
      53
      54
      55
      56
      57
      58
      59
      60
      61
      62
      63
      64
      65
      66
      67
      68
      69
      70
      71
      72
      73
      74
      75
      76
      77
      78
      79
      80
      81
      82
      83
      84
      85
      86
      87
      88
      89
      90
      91
      92
      93
      94
      95
      96
      97
      98
      99
      100
      101
      102
      103
      104
      105
      106
      107
      108
      109
      110
      111
      112
      113
      114
      115
      116
      117
      118
      119
      120
      121
      122
      123
      124
      125
      126
      127
      128
      129
      130
      131
      132
      133
      134
      135
      136
      137
      138
      139
      140
      141
      142
      143
      144
      145
              const geoidService = await Cesium.ArcGISTiledElevationTerrainProvider.fromUrl("https://tiles.arcgis.com/tiles/GVgbJbqm8hXASVYi/arcgis/rest/services/EGM2008/ImageServer");
      
              // Attribution text retrieved from https://arcgis.com/home/item.html?id=d798c71512404bbb9c1551b827bf5467
              viewer.creditDisplay.addStaticCredit(new Cesium.Credit("National Geospatial-Intelligence Agency (NGA)", false));
      
              const i3sProvider = await Cesium.I3SDataProvider.fromUrl("https://tiles.arcgis.com/tiles/z2tnIkrLQ2BRzr6P/arcgis/rest/services/SanFrancisco_Bldgs/SceneServer", {
                  geoidTiledTerrainProvider: geoidService
              });
              viewer.scene.primitives.add(i3sProvider);
      
              // Attribution text retrieved from https://www.arcgis.com/home/item.html?id=d3344ba99c3f4efaa909ccfbcc052ed5
              viewer.creditDisplay.addStaticCredit(new Cesium.Credit("Precision Light Works (PLW)", false));
      
      Expand

Call the geocoding service

  1. Create a new arcgisRest.ApiKeyManager using your access token to authenticate requests to the geocoding service.

    Use dark colors for code blocks
    1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    11
    12
    13
    14
    15
    16
    17
    18
    19
    20
    21
    22
    23
    24
    25
    26
    27
    28
    29
    30
    31
    32
    33
    34
    35
    36
    37
    38
    39
    40
    41
    42
    43
    44
    45
    46
    47
    48
    49
    50
    51
    52
    53
    54
    55
    56
    57
    58
    59
    60
    61
    62
    63
    64
    65
    66
    67
    68
    69
    70
    71
    72
    73
    74
    75
    76
    77
    78
    79
    80
    81
    82
    83
    84
    85
    86
    87
    88
    89
    90
    91
    92
    93
    94
    95
    96
    97
    98
    99
    100
    101
    102
    103
    104
    105
    106
    107
    108
    109
    110
    111
    112
    113
    114
    115
    116
    117
    118
    119
    120
    121
    122
    123
    124
    125
    126
    127
    128
    129
    130
    131
    132
    133
    134
    135
    136
    137
    138
    139
    140
    141
    142
    143
    144
    145
            const authentication = arcgisRest.ApiKeyManager.fromKey(accessToken);
    
  2. Define a function called findAddress that takes coordinates (longitude and latitude) as a parameter. Use arcgisRest.reverseGeocode to retrieve address information for the given coordinates.

    Expand
    Use dark colors for code blocks
    1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    11
    12
    13
    14
    15
    16
    17
    18
    19
    20
    21
    22
    23
    24
    25
    26
    27
    28
    29
    30
    31
    32
    33
    34
    35
    36
    37
    38
    39
    40
    41
    42
    43
    44
    45
    46
    47
    48
    49
    50
    51
    52
    53
    54
    55
    56
    57
    58
    59
    60
    61
    62
    63
    64
    65
    66
    67
    68
    69
    70
    71
    72
    73
    74
    75
    76
    77
    78
    79
    80
    81
    82
    83
    84
    85
    86
    87
    88
    89
    90
    91
    92
    93
    94
    95
    96
    97
    98
    99
    100
    101
    102
    103
    104
    105
    106
    107
    108
    109
    110
    111
    112
    113
    114
    115
    116
    117
    118
    119
    120
    121
    122
    123
    124
    125
    126
    127
    128
    129
    130
    131
    132
    133
    134
    135
    136
    137
    138
    139
    140
    141
    142
    143
    144
    145
            function findAddress(coordinates) {
                arcgisRest
                    .reverseGeocode(coordinates, {
                        authentication
                    })
    
                    .then((response) => {
    
                    })
    
            }
    
    Expand
  3. Inside the then block of the reverseGeocode call, create a pin builder using Cesium.PinBuilder. This will allow you to create map markers for the coordinates.

    Expand
    Use dark colors for code blocks
    1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    11
    12
    13
    14
    15
    16
    17
    18
    19
    20
    21
    22
    23
    24
    25
    26
    27
    28
    29
    30
    31
    32
    33
    34
    35
    36
    37
    38
    39
    40
    41
    42
    43
    44
    45
    46
    47
    48
    49
    50
    51
    52
    53
    54
    55
    56
    57
    58
    59
    60
    61
    62
    63
    64
    65
    66
    67
    68
    69
    70
    71
    72
    73
    74
    75
    76
    77
    78
    79
    80
    81
    82
    83
    84
    85
    86
    87
    88
    89
    90
    91
    92
    93
    94
    95
    96
    97
    98
    99
    100
    101
    102
    103
    104
    105
    106
    107
    108
    109
    110
    111
    112
    113
    114
    115
    116
    117
    118
    119
    120
    121
    122
    123
    124
    125
    126
    127
    128
    129
    130
    131
    132
    133
    134
    135
    136
    137
    138
    139
    140
    141
    142
    143
    144
    145
            function findAddress(coordinates) {
                arcgisRest
                    .reverseGeocode(coordinates, {
                        authentication
                    })
    
                    .then((response) => {
    
                        const pinBuilder = new Cesium.PinBuilder();
    
                    })
    
            }
    
    Expand
  4. Add a billboard at the clicked coordinates on the map. Extract the location from the response and add it to the Cesium viewer as an entity.

    Expand
    Use dark colors for code blocks
    1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    11
    12
    13
    14
    15
    16
    17
    18
    19
    20
    21
    22
    23
    24
    25
    26
    27
    28
    29
    30
    31
    32
    33
    34
    35
    36
    37
    38
    39
    40
    41
    42
    43
    44
    45
    46
    47
    48
    49
    50
    51
    52
    53
    54
    55
    56
    57
    58
    59
    60
    61
    62
    63
    64
    65
    66
    67
    68
    69
    70
    71
    72
    73
    74
    75
    76
    77
    78
    79
    80
    81
    82
    83
    84
    85
    86
    87
    88
    89
    90
    91
    92
    93
    94
    95
    96
    97
    98
    99
    100
    101
    102
    103
    104
    105
    106
    107
    108
    109
    110
    111
    112
    113
    114
    115
    116
    117
    118
    119
    120
    121
    122
    123
    124
    125
    126
    127
    128
    129
    130
    131
    132
    133
    134
    135
    136
    137
    138
    139
    140
    141
    142
    143
    144
    145
            function findAddress(coordinates) {
                arcgisRest
                    .reverseGeocode(coordinates, {
                        authentication
                    })
    
                    .then((response) => {
    
                        const pinBuilder = new Cesium.PinBuilder();
    
                        const location = Cesium.Cartesian3.fromDegrees(response.location.x, response.location.y);
                        const result = viewer.entities.add({
                            name: `${response.location.x.toLocaleString()}, ${response.location.y.toLocaleString()}`,
                            description: `${response.address.LongLabel}`,
                            position: location,
    
                            billboard: {
                                verticalOrigin: Cesium.VerticalOrigin.BOTTOM,
                                heightReference: Cesium.HeightReference.CLAMP_TO_GROUND,
                                scale: 0.6,
                                image: pinBuilder.fromColor(Cesium.Color.fromCssColorString('#5491f5'), 48).toDataURL(),
                            }
    
                        })
                        viewer.selectedEntity = result;
    
                    })
    
            }
    
    Expand

Add a click handler

  1. Define a function called onLeftClick that handles user clicks on the map. This function will be triggered whenever a LEFT_CLICK event occurs. Use Cesium.ScreenSpaceEventType.LEFT_CLICK to register the event type.

    Expand
    Use dark colors for code blocks
    1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    11
    12
    13
    14
    15
    16
    17
    18
    19
    20
    21
    22
    23
    24
    25
    26
    27
    28
    29
    30
    31
    32
    33
    34
    35
    36
    37
    38
    39
    40
    41
    42
    43
    44
    45
    46
    47
    48
    49
    50
    51
    52
    53
    54
    55
    56
    57
    58
    59
    60
    61
    62
    63
    64
    65
    66
    67
    68
    69
    70
    71
    72
    73
    74
    75
    76
    77
    78
    79
    80
    81
    82
    83
    84
    85
    86
    87
    88
    89
    90
    91
    92
    93
    94
    95
    96
    97
    98
    99
    100
    101
    102
    103
    104
    105
    106
    107
    108
    109
    110
    111
    112
    113
    114
    115
    116
    117
    118
    119
    120
    121
    122
    123
    124
    125
    126
    127
    128
    129
    130
    131
    132
    133
    134
    135
    136
    137
    138
    139
    140
    141
    142
    143
    144
    145
            function onLeftClick(movement) {
    
            }
    
            viewer.screenSpaceEventHandler.setInputAction(onLeftClick, Cesium.ScreenSpaceEventType.LEFT_CLICK);
    
    Expand
  2. Inside onLeftClick, update the coordinates of the clicked point. Remove any previously selected points (if any). Convert the clicked screen position into geographic coordinates.

    Expand
    Use dark colors for code blocks
    1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    11
    12
    13
    14
    15
    16
    17
    18
    19
    20
    21
    22
    23
    24
    25
    26
    27
    28
    29
    30
    31
    32
    33
    34
    35
    36
    37
    38
    39
    40
    41
    42
    43
    44
    45
    46
    47
    48
    49
    50
    51
    52
    53
    54
    55
    56
    57
    58
    59
    60
    61
    62
    63
    64
    65
    66
    67
    68
    69
    70
    71
    72
    73
    74
    75
    76
    77
    78
    79
    80
    81
    82
    83
    84
    85
    86
    87
    88
    89
    90
    91
    92
    93
    94
    95
    96
    97
    98
    99
    100
    101
    102
    103
    104
    105
    106
    107
    108
    109
    110
    111
    112
    113
    114
    115
    116
    117
    118
    119
    120
    121
    122
    123
    124
    125
    126
    127
    128
    129
    130
    131
    132
    133
    134
    135
    136
    137
    138
    139
    140
    141
    142
    143
    144
    145
            function onLeftClick(movement) {
    
                viewer.entities.removeAll();
                const pickedPosition = viewer.scene.pickPosition(movement.position);
    
                const cartographic = Cesium.Cartographic.fromCartesian(pickedPosition);
                const originLatLng = [Cesium.Math.toDegrees(cartographic.longitude), Cesium.Math.toDegrees(cartographic.latitude)]
    
            }
    
            viewer.screenSpaceEventHandler.setInputAction(onLeftClick, Cesium.ScreenSpaceEventType.LEFT_CLICK);
    
    Expand
  3. Pass the latitude and longitude values obtained from the click event to the findAddress function. This will send a request to the geocoding service to retrieve the address for the clicked location.

    Expand
    Use dark colors for code blocks
    1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    11
    12
    13
    14
    15
    16
    17
    18
    19
    20
    21
    22
    23
    24
    25
    26
    27
    28
    29
    30
    31
    32
    33
    34
    35
    36
    37
    38
    39
    40
    41
    42
    43
    44
    45
    46
    47
    48
    49
    50
    51
    52
    53
    54
    55
    56
    57
    58
    59
    60
    61
    62
    63
    64
    65
    66
    67
    68
    69
    70
    71
    72
    73
    74
    75
    76
    77
    78
    79
    80
    81
    82
    83
    84
    85
    86
    87
    88
    89
    90
    91
    92
    93
    94
    95
    96
    97
    98
    99
    100
    101
    102
    103
    104
    105
    106
    107
    108
    109
    110
    111
    112
    113
    114
    115
    116
    117
    118
    119
    120
    121
    122
    123
    124
    125
    126
    127
    128
    129
    130
    131
    132
    133
    134
    135
    136
    137
    138
    139
    140
    141
    142
    143
    144
    145
            function onLeftClick(movement) {
    
                viewer.entities.removeAll();
                const pickedPosition = viewer.scene.pickPosition(movement.position);
    
                const cartographic = Cesium.Cartographic.fromCartesian(pickedPosition);
                const originLatLng = [Cesium.Math.toDegrees(cartographic.longitude), Cesium.Math.toDegrees(cartographic.latitude)]
    
                findAddress(originLatLng);
    
            }
    
            viewer.screenSpaceEventHandler.setInputAction(onLeftClick, Cesium.ScreenSpaceEventType.LEFT_CLICK);
    
    Expand

Run the app

Run the app.

Click on the scene to get the address of the clicked point.

What's next?

Learn how to use additional ArcGIS location services in these tutorials:

Your browser is no longer supported. Please upgrade your browser for the best experience. See our browser deprecation post for more details.