R program matrix


I am trying to create a table that looks as follows:

    portfolio            return            risk
    SP                        6                    20
    NASDAQ            10                  25
The numbers are stored in variables and I am not hardcoding them and rest are headings.
How do I code for this.

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sdstuberConnect With a Mentor Commented:
> t <- matrix(c(60,20,10,25),ncol=2,byrow=TRUE)
> rownames(t) <- c("SP","NASDAQ")
> colnames(t) <- c("return","risk")
> t <- as.table(t)
> t

substitute your variables for the corresponding values in the collection
another version, same idea, using a matrix, but different syntax

> vals <- c(6,20,10,25)
> rows <- c("SP","NASDAQ")
> cols <- c("return","risk")
> tab <- matrix(vals,ncol=2,byrow=TRUE,dimnames=list(rows,cols))
> tab

I don't know of a way to put a label above the row names, that is, your "portfolio" label.
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