step_expr function

Create a step expression

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

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

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.

Returns

A list representing the step expression.

Examples

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