Socrata was acquired by Tyler Technologies in 2018 and is now the Data and Insights division of Tyler. The platform is still powered by the same software formerly known as Socrata but you will see references to Data & Insights going forward.



Returns the rows that have locations within the specified box, defined by latitude, longitude corners

Works with the following datatypes:

This function works with 2.1 endpoint(s). What does this mean? »

The within_polygon(...) function is used in the $where parameter filter for Point , Line , and Polygon values within a polygon defined by a sequence points. It accepts two parameters:

  • The field name of a Location or Point
  • A multipolygon in Well-Known Text format

Well-Known Text is a standard way of encoding geospatial data in a textual manner, and is more compact than GeoJSON:

MULTIPOLYGON ((-87.637714 41.887275, -87.613681 41.886892, -87.625526 41.871555, -87.637714 41.887275))

Heads up! Contrary to the normal convention of "latitude, longitude" ordering in the coordinates property, Well-known text orders the coordinates as "longitude, latitude" (X coordinate, Y coordinate), as other GIS coordinate systems are encoded.

For example, to query for all of the Chicago 311 service requests for vacant and abandoned buildings within that polygon:$where=within_polygon(location, 'MULTIPOLYGON (((-87.637714 41.887275, -87.613681 41.886892, -87.625526 41.871555, -87.637714 41.887275)))')

Cool Tool! Formatting shapes as WKT for testing is tedious and error-prone - I don't recommend it. Instead, use a library that can generate them for you, or a tool like Wicket to draw them in your browser.