MGLInterpolationMode

Values between two stops are interpolated linearly, or exponentially based on the MGLStyleFunctionOptionInterpolationBase. A higher interpolation base causes the function’s output values to vary exponentially, increasing more rapidly towards the high end of the function’s range. The default interpolation base of 1 creates a linear interpolation. Use exponential interpolation mode to show values relative to stop keys.

Values between two stops are not interpolated. Instead, properties are set to the value of the stop just less than the function input. Use interval interpolation mode to show values that fall within a range.

Values between two stops are not interpolated. Instead, properties are set to the value of the stop equal to the function input’s key value. Use categorical interpolation mode to show values that fit into categories.

Values between two stops are not interpolated. Instead, for any given feature, the style value matches a value in that feature’s attributes dictionary. Use identity interpolation mode to show attribute values that can be used as style values.