[pstricks] ncbar outside pstricks

[hh-brasil at bol.com.br]

Dear Mr. Arnold

try to make the  step from ps to pdf with freepdf (public domain). It uses 
ghostscript and protocols its ways. Even if you get an error message, it might be better!

hh



Em 06/07/2011 22:27, David Arnold < dwarnold45 at suddenlink.net > escreveu:
All,

I've attached a file (won't compile for you as many supporting files are missing) so that you can see what our preamble contains:

This block of code contains my question.

code_snippet:

We ``group'' the first and second terms, noting that we can factor  $5u$ out of both of these terms. Then we ``group'' the third and fourth terms, noting that we can factor $-8$ out of both of these terms.
\begin{align*}
5\rnode[t]{A}{u^2} -10\rnode[t]{B}{uw} -8\rnode[t]{C}{u} +16\rnode[t]{D}{w}
&=5u\,{\color{red}(u-2w)} -8\,{\color{red}(u-2w)}\\
\intertext{Now we note that we can factor a $u-2w$ out of both of these terms.}
&=(5u-8){\color{red}(u-2w)}
\end{align*}
\ncbar[linecolor=red,angle=270,arm=7pt,nodesep=3pt]{}{A}{B}
\ncbar[linecolor=red,angle=270,arm=7pt,nodesep=3pt]{}{C}{D}

In our Optimath system (msenux.redwoods.edu/optimath), we compile this file with a script, whose main lines are:

    system "latex --shell-escape $testbank-preview.tex";
    system "dvips -o $testbank-preview-pics.ps $testbank-preview.dvi";
    system "ps2pdf -dAutoRotatePages=/None $testbank-preview-pics.ps $testbank-preview-pics.pdf";
    system "pdflatex  --shell-escape $testbank-preview.tex";

This results in the following error:

ABD: EveryShipout initializing macros
(/usr/local/texlive/2010/texmf-dist/tex/latex/amsfonts/umsa.fd)
(/usr/local/texlive/2010/texmf-dist/tex/latex/amsfonts/umsb.fd))
! Incomplete \iffalse; all text was ignored after line 67.
 
                \fi 
 dev-preview.tex
                   
? 

I wondering if there is an easy way to recode my code_snippet above so that it will compile in our system?

Thanks.

David Arnold
College of the Redwoods
http://msemac.redwoods.edu/~darnold/index.php



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