projections Property
Vega projections
map longitude and latitude data to projected x
and y
coordinates. When working with geospatial data in OmniSci, you can use projections to define geographic points and regions.
General projections
property JSON format:
When you specify a projection, you must reference it in the Marks Property using the transform
object. For example, if you define the projection my_mercator_projection
:
you then reference it as follows:
The projections specification has the following properties:
Property | Data Type | Required | Description |
| string | X | User-assigned name of the projection. |
| string | X | Projection type. Currently supported types:
|
| object | Specifies the longitude and latitude bounding box for the projection. Default values:
|
Example
Use Vega projection projection
alongside array columns: