>>>>> Thomas Levine <_...@thomaslevine.com>
>>>>> on Fri, 28 Jul 2017 18:53:16 +0000 writes:
> The attached patch corrects a dead link in the treering
> documentation. The URL in the manual [1] refers to a
> personal home page belonging to Christine Hallman (user
> "hallman") on the website of the University of Arizona
> Laboratory of Tree-Ring Research (LTRR). It seems that the
> LTRR personal homepages have been moved to a new root
> directory [2] and that Hallman's webpage is no longer
> there.
> I have contacted Dr. Hallman. She confirmed that the LTRR
> hosting has changed and that she has not set up her
> website on a new host. Also, I have not managed to find
> any other photographs of the Methuselah Walk. So the page
> on the Wayback Machine [3] is the best option I see for
> now.
> Dr. Hallman also told me that she has more photographs of
> the tree, and she has offered to publish them in order
> that we may reference more photographs eventually.
Dear Thomas,
thank you very much for your careful work about this.
I'm sorry it took so long before anyone reacted to this - and so
thank you as well for the reminder.
[..........]
The web.archive.org aka Wayback Machine aka Internet Archive
URL does work and your patch is formally fine.
There may be one small problem: IIUC, the wayback machine is a
+- private endeavor and really great and phantastic but it does
need (US? tax deductible) donations, https://archive.org/donate/,
to continue thriving.
This makes me hesitate a bit to link to it within the "base R"
documentation. But that may be wrong -- and I should really use
it to *help* the project ?
> I found other dead links in the base documentation, but I thought most
> should be kept for reference, as they were usually links to a
> publisher's webpage for a particular journal article or book. The link
> of present interest just provides context about the tree whose rings
> were measured, so I think it is okay to change the link.
> [1] http://www.ltrr.arizona.edu/~hallman/sitephotos/meth.html
> [2] http://www.ltrr.arizona.edu/webhome/
> [3]
https://web.archive.org/web/20110523225828/http://www.ltrr.arizona.edu/~hallman/sitephotos/meth.html
> ----------------------------------------------------------------------
> Index: src/library/datasets/man/treering.Rd
> ===================================================================
> --- src/library/datasets/man/treering.Rd (revision 72947)
> +++ src/library/datasets/man/treering.Rd (working copy)
> @@ -32,6 +32,6 @@
> }
> \references{
> For some photos of Methuselah Walk see
> - \url{http://www.ltrr.arizona.edu/~hallman/sitephotos/meth.html}
> +
\url{https://web.archive.org/web/20110523225828/http://www.ltrr.arizona.edu/~hallman/sitephotos/meth.html}
> }
> \keyword{datasets}
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