[R] loop over matrix: subscript out of bounds

[Maija Sirkjärvi]

Thanks, but I didn't quite get it. And I don't get it running as it should.

ti 7. elok. 2018 klo 10.47 Martin Maechler (maechler using stat.math.ethz.ch)
kirjoitti:

>
> > Thanks for help!
> > However, changing the index from i to j for the column vector changes the
> > output. I would like the matrix to be the following:
>
> > -1 1 0 0 0 0 0
> > 0 -1 1 0 0 0 0
> > 0 0 -1 1 0 0 0
> > .....
> > etc.
>
> > How to code it?
>
> as Enrico Schumann showed you:  Without any loop, a very nice
> R-ish way (see his message)!
>
> Martin
>
> > Best,
> > Maija
>
>

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