[Rd] documentation bug for isoreg example (PR#10352)

[maechler at stat.math.ethz.ch]

>>>>> "BT" == Benjamin Tyner <btyner at gmail.com>
>>>>>     on Thu, 18 Oct 2007 15:15:06 +0200 (CEST) writes:

    BT> Full_Name: Benjamin Tyner
    BT> Version: 2.6.0 (43063)
    BT> OS: WinXP
    BT> Submission from: (NULL) (171.161.224.10)


    BT> At the end of the examples for isoreg, there is

    BT> cat("R^2 =", formatC(sum(residuals(ir4)^2) / (9*var(y4)), digits=2),"\n")

    BT> I think this should be

    BT> cat("R^2 =", formatC(1 - sum(residuals(ir4)^2) / (9*var(y4)), digits=2),"\n"

I think so too, and I'm infinitely embarrassed because I think I
had put that example there {maybe cut & paste from somewhere,
but still...}

Martin Maechler, ETH Zurich.