Line layers are the 2D version of arc layers. Both draw a line between two points to represent distance, but, in a line layer, the line is drawn across the shortest distance between the two points.

Settings

The following section provides help for every setting in Line Layer.

Basic

Contains basic settings required for Line Layer configuration.

You can draw lines in two ways -- creating an line from a set of source and destination points, or from a set of points and their neighbors.

Setting	Description
Layer Type	Must be Point to display the line layer.
Dataset	Required. The dataset to use for the line layer.
Columns	Required. The columns to use for the line layer.
Columns: Points	Provide a pair of source/target latitude and longitudes columns, or Hex/H3 ID columns. Optionally, include an altitude column.
Columns: Point and Neighbors	Provide a latitude and longitude column for a point, then a `geo` column containing one or more neighbors. Optionally, include an altitude column.

Color

Color settings for the line.

Setting	Description
Color Based On	The field to base the line color on.
Color Scale	The color scale and palette for the line color.
Opacity	The opacity of the line color. 100 = fully opaque, 0 = fully transparent.

Stroke

Color settings for the stroke, or line width.

Setting	Description
Stroke Slider	The stroke width (or range of stroke width when a field is selected for "Stroke Based On").
Stroke Based On	The field to base the stroke width on.
Stroke Scale	The scaling of the stroke width. Choose from linear, sqrt, or log.

Elevation Scale

Elevation settings for the Line Layer. Requires an elevation column.

Setting	Description
Elevation Scale	When an altitude is defined, a multiplier applied to emphasize elevation.

JSON Schema

For details on how to programmatically specify layer properties, refer to the Layer Configuration specification.