Nothing
summary.PriceSurface <-
function(object, ...){
cat("\nVolatility sequence:\n")
cat(as.numeric(rownames(object)))
cat("\n\nStrike sequence:\n")
cat(as.numeric(colnames(object)))
cat("\n\nAverage price: ")
cat(mean(object))
cat("\nMinimum price: ")
cat(min(object))
cat("\nMaximum price: ")
cat(max(object))
}
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