[pstricks] dataread in a table... - arrayjob fails

[Michael Sharpe]

On May 12, 2010, at 9:00 PM, Hensh, Richard wrote:

> A simple test of the arrayjob package was not successful with PSTricks. The minimal example below fails with the error:
> 
> ! Argument of \lists has an extra }.
> <inserted text> 
>                \par 
> l.8 \psline(\lists(1)
>                             ,2)
> 
> I tried using the \lists(1) call in several other pstricks macros but none were successful.
> 
> %%%%%%%%%%%%%%%
> \documentclass[10pt]{minimal}
> \usepackage{arrayjobx}
> \usepackage{pstricks-add}
> \begin{document}
> \newarray\lists
> \readarray{lists}{1&3}
> \begin{pspicture}(-3,3)(-3,3)
> \psline(\lists(1),2)
> \end{pspicture}
> %% The following typesets with no problems.
> $\lists(1) + \lists(2)$
> \end{document}
> %%%%%%%%%%%%%%%
> 
> Suggestions?
> 
> thanks
> rick

Hi Rick,

You are running into a limitation of the pstricks coordinate parsing mechanism, which looks for the first ) following the first ( resulting in trying to assign a meaning to the coordinates \lists(1. That is, expansion of the argument \lists(1) does not take place before parsing the coordinates. One way around this is the following.

\checklists(1)% puts data in lists(1) into macro \cachedata
\psline(\cachedata,2)

For an extended illustration of using the arrayjobx methods to generate pstricks objects, take a look at

http://math.ucsd.edu/~msharpe/pst-grapha.zip

Michael