

   CCaallccuullaattee aanndd pplloott aa ccoorrrreellooggrraamm

        corgram(y, wt=1, add=F, lty=1, ylim=NULL, xlab=NULL, ylab=NULL, main=NULL)

   AArrgguummeennttss::

          y: A time series vector.

         wt: Indicator vector with zeros for values to be
             ignored.

        add: If TRUE, adds a new correlogram to an existing
             plot.

     others: Graphics parameters

   DDeessccrriippttiioonn::

        `corgram' calculates the values of a correlogram and
        plots it.

   VVaalluuee::

        `corgram' returns a two-column matrix containing the
        correlogram.

   AAuutthhoorr((ss))::

        J.K. Lindsey

   EExxaammpplleess::

        y <- rnorm(100)
        corgram(y)

