Note
This documentation is for a prior release of Kinetica. For the latest documentation, click here.
Points
A point can be any record that has fields containing the longitude and latitude of a geospatial point.
Shapes
Kinetica supports the following WKT types: Point, LineString, Polygon, MultiPoint, MultiLineString, MultiPolygon, and GeometryCollection.
WKT shapes can include a z-level value ranging from -128 to +128 but rendering points on the z-axis (e.g., via /wms or Workbench as either a Table/View WMS Preview or a Worksheet Map Block) is currently not supported.
Note
Though LINEARRING WKT types may be inserted into tables, any LINEARRINGs used within a geospatial function will be converted to a LINESTRING
Examples of WKTs include:
| Type | WKT |
|---|---|
| Point | POINT (-77.1151397 38.8814540) |
| LineString | LINESTRING (-77.1151397 38.8814540, -122.3979088 37.7929045) |
| Polygon | POLYGON ((-77.115 38.881, -71.054 42.364, -122.398 37.793, -77.115 38.881)) |
| MultiPoint | MULTIPOINT ((-77.115 38.881), (-122.398 37.793)) |
| MultiLineString | MULTILINESTRING ((-77.115 38.881, -122.398 37.793), (-77.115 38.881, -71.054 42.364)) |
| MultiPolygon | MULTIPOLYGON (((-77 38, -71 42, -122 37, -77 38)), ((-122 37, -77 38, -71 42, -122 37))) |
| GeometryCollection | GEOMETRYCOLLECTION (POINT (-77.115 38.881), LINESTRING (-77.115 38.881, -122.398 37.793)) |
Tracks
Tracks are a set of points which represent the path an object takes across the map. Unlike a WKT multiline string, each point in a track has an associated timestamp. Taken together: the longitude, latitude, and timestamp in each record describe where the object was at a given time; all points in a given track should contain the same track ID. Tables containing tracks must have columns of the following names and types (names are case-sensitive):
| Column | Type | Description |
|---|---|---|
| TRACKID | Select string types (unrestricted, charN, UUID) | Must be the table's shard key |
| x | Any numeric type (int, float, double, etc.) | Corresponds to the longitude |
| y | Any numeric type (int, float, double, etc.) | Corresponds to the latitude |
| TIMESTAMP | Any numeric or time-based type (long, datetime, etc.) |
Any table created with these columns that does not define a shard key with automatically have one added.
Track-based tables can utilize partitioning for better performance and data management. See Partitioning for details and limitations.
Tracks can be accessed via the following means:
- SQL
- Native API endpoints:
Labels
Labels are text labels located at specified positions on the map. Each label can optionally be enclosed in a box and can have a line pointing to a specific location.
