Geographic data preparation¶
The prepare recipe provides a variety of processors to work with geographic information. DSS also provides a set of formulas to compute geographic operations (see Formula language)
DSS provides two processors to convert between a Geopoint column and latitude/longitude columns:
It produces two kinds of information:
Administrative data (country, region, city, …)
Geographic data (latitude, longitude)
The output GeoPoint can be used for Map Charts.
This processor changes the Coordinates Reference System (CRS) of a geometry or geopoint column.
Source and target CRS can be given either as a EPSG code (e.g., “EPSG:4326”) or as a projected coordinate system WKT (e.g., “PROJCS[…]”).
Dataiku uses the WGS84 (EPSG:4326) coordinates system when processing geometries. Before manipulating any geospatial data in Dataiku, make sure they are projected in the WGS84 (EPSG:4326) coordinates system.
Use this processor to convert data projected in a different CRS to the WGS84 (EPSG:4326) coordinates system.
The /preparation/processors/geopoint-distance processor allows you to compute distance between points
The Create area around a geopoint processor performs creation of polygons centered on input geopoints. For each input geospatial point, a spatial polygon is created around it, delimiting the area of influence covered by the point (all the points that fall within a given distance from the geopoint). The shape area of the polygon can be either rectangular or circular (using an approximation) and the size will depend on the selected parameters.