Function interp_lines 

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

Add connected line segments to the current plot.

@param x numeric vector of x-coordinates @param y numeric vector of y-coordinates @param col color @param lwd line width @return NULL (invisibly)