On Thu, 4 Mar 2021 07:39:31 +0100
Göran Broström <goran.brost...@umu.se> wrote:
> Hi Rolf,
>
> On 2021-03-04 03:51, Rolf Turner wrote:
> >
> > I am trying to create a vignette in a package (basically just using
> > LaTeX code; no R calculations or data are involved).
> >
> > The LaTeX code involves the use of the align* environment from the
> > amsmath package. When I try to run Sweave() on the *.Rnw file I get
> > a corresponding *.tex file, but then when I run pdflatex on that
> > file I get an error:
> >
> >> ! LaTeX Error: Command \iint already defined. Or name \end...
> >> illegal, see p.192 of the manual.
> >>
> >> See the LaTeX manual or LaTeX Companion for explanation. Type H
> >> <return> for immediate help. ...
> >>
> >> l.649 ...d{\iint}{\DOTSI\protect\MultiIntegral{2}}
> >
> > which is completely opaque to me.
>
> Shouldn't be;
Well I guess it's not opaque when you are sufficiently comfortable with
what you are doing. But when every <expletive deleted> thing is
bewilderingly arcane it is difficult to sift out the few simple things
that actually are comprehensible.
> the amsmath package defines \iint, and the error
> message says that it was already defined, probably in another package
> you have loaded. Easily found by googling. My first hit was
>
> https://tex.stackexchange.com/questions/356599/command-iint-already-defined
It turned out that I had \usepackage{wasysym} in the preamble. I guess
it got there because I copied a prototype from somewhere ... long ago,
to use in another package that I maintain. Then I copied the *.Rmw
file over from that other package and modified it, not changing those
things about which I hadn't a clue --- like wasysym. I first
tried \usepackage[nointegrals]{wasysym} as suggested at the URL that
you pointed me to, and that worked fine. Then I tried commenting
it out completely and that worked fine too. So I never needed wasysym
in the first place. But there are so *many* bits and pieces that it is
impossible to tell what is needed and what isn't.
<SNIP>
Anyhow, I seem to be good to go now. Thanks.
cheers,
Rolf
--
Honorary Research Fellow
Department of Statistics
University of Auckland
Phone: +64-9-373-7599 ext. 88276
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