map

An object that serves as a namespace for the VectorMap widget.

projection(data)

Creates a new projection.

Export: projection
Parameters:
data:

Object

An object specifying the conversion functions.

Object structure:
Name Type Description
to

Function

The function that converts coordinates from a data space to [-1, 1] * [-1, 1] space.

from

Function

The function that converts coordinates from the [-1, 1] * [-1, 1] space to the data space.

aspectRatio

Number

The projection's aspect ratio.

Return Value:

Object

The projection.

After creating the custom projection, you can add it to the projections storage or assign the returning object to the projection option of the widget.

View Demo

projection

A namespace with methods that manipulate map projections.