Thanks for the suggestions.
There is actually a Latex issue with the package *extract *handling align*
environment, corresponding to the error I read on the LyX console.
The solution (see the discussion
http://tex.stackexchange.com/questions/154515/why-align-environement-does-not-work-with-extract-package)
is to replace every
\begin{align*}
with
\begin{equation}\begin{aligned}
and the same for every \end{align*} statements.
My question concerning LyX, however, remains open. Since the output of
extract is a Latex file, it has to be compiled externally. Is that
possible, maybe using regular expressions, to mask the content of a LyX
file to math-only (or in general, to a chosen environment only)? For long
documents (possibly written along many months) it is a useful instrument to
filter some undesired content into some sort of auxiliary LyX file.
In case no solution shows up, do you think it is a suitable feature to be
added to the FeaturePoll list at https://wiki.lyx.org/LyX/FeaturePoll ?
Riccardo
2016-10-26 19:00 GMT+02:00 Richard Heck <[email protected]>:
>
> I don't know how to solve this problem---I'm top-posting since the details
> below don't matter much---but I can say how to go about solving it.
>
> Since you are comfortable with LaTeX, figure this out at the LaTeX level
> first, and ignore LyX. So, e.g,. create a simple file, based on
> article.cls, and include a variety of types of equations, e.g., align* and
> other things that seem to be causing problems. You may need to try putting
> the line that loads extract in different places. Does this work? If not,
> the problem lies in extract's treatment of those environments. If it does
> work, try shifting the document class to classic-thesis. Does that work? If
> not, then there's some incompatibility between classic-thesis and extract.
> Those are both LaTeX issues. I'd try writing the extract maintainer, or
> asking on comp.text.tex or somewhere like that.
>
> If all is well on the LaTeX side, try importing your simple LaTeX file
> into LyX. Alternatively, just try creating the same kind of file in LyX. If
> it no longer works, then export it back to LaTeX and compare the two files.
> They will be different. It may be that the line that's loading extract is
> coming at a different place.
>
> Richard
>
>
>
> On 10/26/2016 11:42 AM, Riccardo wrote:
>
> Indeed it is very useful in my opinion!
> By the way, sorry for the poor explanation. I'll try to better explain the
> problem:
>
> *In latex* with a Minimal.tex (attached) you run
> latex Minimal.tex
> and the line
> \usepackage[active,generate=filename,extract-env={align,equa
> tion}]{extract}
> generate a filename.tex (attached), attaching to it every align and
> equation environment found in Minimal.tex.
>
> In my case, however, I'm using *LyX with classicthesis template*. Being
> it based on a latex template, I thought it'd be easy to modify the preamble
> classicthesis-config.tex (in fact it worked in the past with some other
> packages). I tried to add the following lines to the package list loaded
>
> \PassOptionsToPackage[active, \PassOptionsToPackage[active,generate=file,
> extract-env={equation,align}]{extract}
> \usepackage{extract}
>
> and I got many errors (not relevant showing them, please read the
> following).
>
> Then, I tried adding to the Latex preamble
>
> \usepackage[active,generate=file,extract-env={equation,align}]{extract}
>
>
> via the Document->Setting->LatexPreamble dialog, with a little more luck.
> At first, I got many identical errors concerning the package extract
> handling of unnumbered equations environment (please refer to the package
> documentation):
>
> ! LaTeX Error: \begin{XTRalign*} on input line 1 ended by \end{XTRalign}.
>
>
> See the LaTeX manual or LaTeX Companion for explanation.
>
> Type H <return> for immediate help.
>
> ...
>
> l.4 \end{XTRalign*}
>
> Your command was ignored.
>
> Type I <command> <return> to replace it with another command,
>
> or <return> to continue without it.
>
> Removing every {align*} and {eqnarray*} environment, leaving numbered
> equations only, a proper "file.tex" is created in the temporary log folder,
> with every numbered formula attached.So now my questions are:
>
> 1. Has anyone encountered the same problem? Do you now any fix to the
> align* issue?
> 2. Do you know any alternative, possibly with a Lyx file output instead of
> a latex one? Formatting and tipography issue are not relevant for me, since
> this would be just an auxiliary file for me to check while writing.
>
> Thanks in advance
> Riccardo
>
> 2016-10-26 15:32 GMT+02:00 Scott Kostyshak <[email protected]>:
>
>> On Wed, Oct 26, 2016 at 02:31:03PM +0200, Riccardo wrote:
>> > Hello,
>>
>> Hi Riccardo,
>>
>> > do anybody have ever used the package extract in LyX (possibly in
>> > combination with classicthesis)?
>>
>> I have not used it, but it looks interesting and useful!
>>
>> > I'm writing my thesis and I'd like to
>> > check the consistency of the notation throughout it, focusing on math
>> only.
>> > Are there any alternatives?
>> > If I use the package as suggested in the CTAN repository documentation,
>> Lyx
>> > fails with a number of errors.
>>
>> For issues like this, please always say explicitly which errors you get
>> and please also attach a minimal example. See here for more information:
>>
>> https://wiki.lyx.org/FAQ/MinimalExample
>>
>> Scott
>> >
>> > Riccardo
>>
>
>
>
