The latitude distance between two consecutive grid lines, expressed in degrees.
The longitude distance between two consecutive grid lines, expressed in degrees.
The scale of the map.
The scale parameter is a cartographic scale, which is the ratio of a distance on the screen to a distance in the real world. The specified settings are used for all scales smaller than the specified scale (so for more 'zoomed out' than the specified scale. This means that using zero as scale will apply the settings for all zoom levels.
Object which describes the spacing between two consecutive grid lines for a specific map scale. Consult the documentation of the LonLatGrid constructor for more information.