Function interp_plot_viewport 

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

Create a viewport with margins specified in lines of text.

This is a convenience wrapper around viewport() that converts margin specifications (in lines of text) to appropriate offsets.

@param margins numeric vector c(bottom, left, top, right) in lines (default c(5.1, 4.1, 4.1, 2.1)) @return a viewport object