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69 lines
2.1 KiB
Markdown
69 lines
2.1 KiB
Markdown
# ArcGIS REST API Reference
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The Raleigh Open Data portal is built on ArcGIS Hub and exposes datasets through standard ArcGIS REST API endpoints.
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## Live Catalog Discovery
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The CLI discovers the current catalog from the ArcGIS Hub Search API:
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```text
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https://data.raleighnc.gov/api/search/v1/collections/{collection}/items?startindex={startindex}&limit={limit}
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```
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Collections: `dataset`, `document`, `appAndMap`.
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The CLI paginates through each collection, normalizes records, caches the result, and validates canonical URLs on demand.
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## Layer Info
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Get metadata about a specific layer:
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```text
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{serviceUrl}?f=json
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```
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For FeatureServer:
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```text
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https://services.arcgis.com/v400IkDOw1ad7Yad/arcgis/rest/services/DogParkLocations_Existing_PUBLIC/FeatureServer/0?f=json
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```
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For MapServer:
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```text
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https://maps.wake.gov/arcgis/rest/services/Inspections/RestaurantInspectionsOpenData/MapServer/1?f=json
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```
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## Query Records
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```text
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{serviceUrl}/query?where={where}&outFields={fields}&returnGeometry={true|false}&f={format}&resultRecordCount={limit}&resultOffset={offset}&orderByFields={fields}&outSR=4326
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```
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| Parameter | Description | Example |
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|-----------|-------------|---------|
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| `where` | SQL WHERE clause | `1=1`, `SCORE<70` |
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| `outFields` | Comma-separated field names | `*`, `SITE,ADDRESS` |
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| `returnGeometry` | Include spatial data | `true`, `false` |
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| `f` | Output format | `geojson`, `json`, `html` |
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| `resultRecordCount` | Max records per request | `10`, `1000` |
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| `resultOffset` | Pagination offset | `0`, `1000` |
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| `orderByFields` | Sort fields | `SCORE DESC` |
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| `outSR` | Output spatial reference | `4326` |
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## Export Formats
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| Format | Parameter | Use Case |
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|--------|-----------|----------|
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| GeoJSON | `f=geojson` | Spatial data in standard format |
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| JSON | `f=json` | Tabular/attribute data |
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| HTML | `f=html` | Human-readable table |
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## Notes
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- All endpoints are public; no API key is required.
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- Dates are returned as Unix timestamps in milliseconds.
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- `returnGeometry=false` is faster for tabular queries.
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- MapServer layers with `type: "Table"` have no geometry.
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- String values in WHERE must be single-quoted.
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