Function interp_barplot 

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

Create a bar plot from a numeric vector.

@param height numeric vector of bar heights @param names.arg character vector of bar names @param col bar color @param main plot title @return numeric vector of bar midpoints (invisibly)