Get item data

The data of an itemAn item, also known as a content item, is a resource stored in a portal such as a web map, hosted layer, style, script tool, file, or notebook.Learn more in ArcGIS portalArcGIS portal, also known as a portal, is a website with applications and tools that can be used to create, manage, access, and share geospatial content and data. It supports security and authentication, developer credentials, content and data service management, user and group management, and site administration. A portal can be hosted in Esri's infrastructure or your own infrastructure.Learn more serves as the foundation that supports the item's capability and usability. It provides the underlying geospatial information that supports the item's visualization, analysis, and interactivity.

Why get the item data

Fetching the underlying data of an item is a process that allows you to retrieve data in a predetermined format, such as CSV, shapefile, or GeoJSON.

You get the item data to:

• Integrate the data into your custom workflows, applications, and analyses.
• Perform data analysis and visualization in external systems.
• Maintain data consistency across different platforms and systems.
• Ensure users can access and work with the data using their preferred custom tools and software.

How to get the item data

The general steps of getting the item data:

1. Choose a type of authentication

The purpose of an access token in ArcGIS is to provide secure, authorized access to content items, services, and functionality for both applications and users. You need to implement a type of authentication in your app to get an access token and access secure ArcGIS resources. The type of authentication you implement will determine the access privileges and billing method of your app.

The following types of authentication can be used to get an access token:

• API key authenticationAPI key authentication is a type of authentication that uses an API key to authenticate requests to ArcGIS services and secure portal items.Learn more
• User authenticationUser authentication is a type of authentication that allows users with an ArcGIS account to sign into an application and allow it to access ArcGIS content, services, and resources on their behalf. The typical authorization protocol used is OAuth2.0.Learn more
• App authenticationApp authentication is a type of authentication that grants a short-lived access token based on an OAuth 2.0 client ID and client secret, authorizing an application to access ArcGIS services and items.Learn more

2. Get an access token

To get an access tokenAn access token is an authorization string that provides access to secure ArcGIS content, data, and services. Its capabilities are determined by the privileges it supports. It is obtained by implementing API key authentication, User authentication, or App authentication.Learn more, you need to implement a type of authentication in your application. Different types of authentication result in access tokens with different privileges. Learn how to implement the types of authentication workflows below:

• API key authentication.
• User authentication.
• App authentication.

3. Get the item data

Once you have an access tokenAn access token is an authorization string that provides access to secure ArcGIS content, data, and services. Its capabilities are determined by the privileges it supports. It is obtained by implementing API key authentication, User authentication, or App authentication.Learn more, you can access an item and its properties by the item ID.

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
  const item = new PortalItem({
    portal: "https://www.arcgis.com/sharing/rest",
    id: "5a5147abe878444cbac68dea9f2f64e7"
  });
  item.load().then(()=>{
    item.fetchData().then((response)=>{
      console.log(response);
    });
  });

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
const portal = new Portal({
  url: "https://www.arcgis.com/",
  authMode: "immediate"
});

// OR
esriConfig.apiKey = "YOUR_ACCESS_TOKEN"

const portalItem = new PortalItem({
  portal: portal,
  id: "ITEM_ID" // private
});
portalItem.load().then(()=>{
  portalItem.fetchData().then((response)=>{
    console.log(response);
  });
});

1
2
3
4
5
6
7
8
9
10
## Public

curl https://www.arcgis.com/sharing/rest/content/items/5a5147abe878444cbac68dea9f2f64e7/data \
-d 'f=pjson'

## Private

curl https://www.arcgis.com/sharing/rest/content/items/<ITEM_ID>/data \
-d 'f=pjson' \
-d 'token=<ACCESS_TOKEN>'

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
// Public

{
  "operationalLayers":[
     {
        "id":"Seven_Natural_Wonders_of_the_World_6051",
        "layerType":"ArcGISFeatureLayer",
        "url":"https://services.arcgis.com/uCXeTVveQzP4IIcx/arcgis/rest/services/Seven_Natual_Wonders_of_the_World/FeatureServer/0",
        "visibility":true,
        "opacity":1,
        "title":"Seven Natural Wonders of the World",
        "itemId":"da7cda8d38224b368bc74cc7d6f05d0f"
     }
  ],
  "baseMap":{
     "baseMapLayer":[
        {
           "id":"defaultBasemap",
           "layerType":"ArcGISTiledMapServiceLayer",
           "url":"https://services.arcgisonline.com/ArcGIS/rest/services/World_Topo_Map/MapServer",
           "visibility":true,
           "opacity":1,
           "itle":"Topographic"
        }
     ],
     "title":"Topographic"
  },
  "spatialReference":{
     "wkid":102100,
     "latestWkid":3857
  },
  "authoringApp":"WebMapViewer",
  "authoringAppVersion":"5.4",
  "version":"2.11"
}

// Private

{
   "operationalLayers":[
      {
         "id":"",
         "layerType":"",
         "url": "ITEM_URL"
         "visibility":true,
         "opacity":1,
         "title":"YOUR_ITEM_TITLE",
         "itemId":"ITEM_ID"
      }
   ],
   "baseMap":{
      "baseMapLayer":[
         {
            "id":"defaultBasemap",
            "layerType":"ArcGISTiledMapServiceLayer",
            "url":"https://services.arcgisonline.com/ArcGIS/rest/services/World_Topo_Map/MapServer",
            "visibility":true,
            "opacity":1,
            "itle":"TILE"
         }
      ],
      "title":"BASEMAP_TITLE"
   },
   "spatialReference":{
      "wkid":102100,
      "latestWkid":3857
   },
   "authoringApp":"WebMapViewer",
   "authoringAppVersion":"5.4",
   "version":"2.11"
 }

Code examples

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
          portalItem
            .fetchData()
            .then(function (data) {
              const features = data.value.features;
              const dataList = document.getElementById("dataList");
              // Populate a list with feature attributes
              features.forEach(function (feature) {
                const attributes = feature.attributes;
                const li = document.createElement("li");
                li.textContent = JSON.stringify(attributes);
                dataList.appendChild(li);
              });

Tutorials

Import data to create a feature layer

Use data management tools to import files and create a feature layer in a feature service.

ArcGIS portal

Define a new feature layer

Use data management tools to define and create a new empty feature layer in a feature service.

ArcGIS portalPython APIREST JS

Manage a feature layer

Use a hosted feature layer item to set the properties and settings of a feature layer in a feature service.

ArcGIS portal

Create a vector tile service

Use data management tools to create a new vector tile service from a feature service.

ArcGIS portalPython APIREST JS

Create a map tile service

Use ArcGIS Online or scripting APIs to publish a map tile service.

ArcGIS portalPython APIREST JS

Services

API support

Use data management toolsData management tools are ArcGIS software applications and functionality in portal and ArcGIS Pro that can be used by developers to create, manage, and edit content and data such as web maps, hosted layers, and data services for their applications.Learn more or Client APIsA Client API is a web, native, or scripting Application Programming Interface (including all ArcGIS, open source, and third-party APIs) that has mapping capabilities and can be used to access ArcGIS location services.Learn more to create, manage, and access data servicesData services, also known as hosted data services, are services created dynamically to store and provide access to your data in ArcGIS. Examples are feature services, vector tile services, map tile services, image services, and scene services.Learn more. The table below outlines the level of support for each API.

Tools