mapgl (version 0.2.1)

step_expr: Create a step expression

Description

This function generates a step expression that can be used in your styles.

Usage

step_expr(column = NULL, property = NULL, base, values, stops, na_color = NULL)

Value

A list representing the step expression.

Arguments

column

The name of the column to use for the step expression. If specified, property should be NULL.

property

The name of the property to use for the step expression. If specified, column should be NULL.

base

The base value to use for the step expression.

values

A numeric vector of values at which steps occur.

stops

A vector of corresponding stops (colors, sizes, etc.) for the steps.

na_color

The color to use for missing values. Mapbox GL JS defaults to black if this is not supplied.

Examples

step_expr(
    column = "value",
    base = "#ffffff",
    values = c(1000, 5000, 10000),
    stops = c("#ff0000", "#00ff00", "#0000ff")
)