Alternatively, a single argument x can be be provided. In this case, an attempt is made to interpret the argument in a way suitable for plotting. If the argument is a list containing components x and y, these are used are assumed to define plotting coordinates; if the argument contains a time series, the x values are taken to be time and the y values to be the time series; if the argument is a matrix with two columns, the first is assumed to contain the x values and the second the y values; in any other case, the argument is coerced to a vector and the values plotted against their indices.