Function interp_grid_points 

fn interp_grid_points(
    args: &[RValue],
    named: &[(String, RValue)],
    context: &BuiltinContext<'_>,
) -> Result<RValue, RError>

Draw points on the grid graphics device.

@param x x-coordinates @param y y-coordinates @param pch plotting character (default 1) @param size point size @param default.units default unit type for coordinates @param gp graphical parameters @param vp viewport to use @param name grob name @param draw whether to draw immediately (default TRUE) @return a points grob (invisibly)