ags-stream
ags-stream creates a readable stream of GeoJSON Features from an ArcGIS Server instance. This can be useful for scraping records from any ArcGIS Server or any other ETL process.
ags-stream is currently used in fulcrum-ags-import to import ArcGIS Server records into Fulcrum and ags-shapefile to export shapefiles from ArcGIS Server instances.
Installation
npm install ags-stream
Usage
var AgsStream = ;var agsStream = <service_url> <options>?) agsStream; agsStream; agsStream;
The service_url
parameter represents a single layer in an ArcGIS Server map service. It should look something like http://gis-web.co.union.nc.us/arcgis/rest/services/PWGIS_Web/Operational_Layers/MapServer/5
.
options
is optional and accepts the following:
Option | Description | Default |
---|---|---|
chunkSize |
The number of features to fetch per request to the AGS instance | 50 |
where |
The where clause for querying the service layer | '1=1' (all features) |
outSR |
The srid for the returned geometry | 4326 (lat, lng) |
qs |
An object of query strings to append to the url. These will be url encoded automatically. | null |