Re: flowchart strangeness

[Hans Hagen <pragma@wxs.nl>]

At 10:38 PM 5/28/2002 +0000, Binx Bolling wrote:
>Why does the appended context flowchart generate an error? If I uncomment 
>the block at the end, it processes without a problem. It seems that 
>problems sometimes arise if the last cell is between a \bgroup \egroup 
>pair. I would like to enclose some cells that way in order to change 
>attributes.
>
>Thanks,
>bb
>
>%output=pdf
>
>\usemodule[chart]
>\starttext
>\startFLOWchart[cells]
>
>  \startFLOWcell
>    \name {A}
>    \location{1,1}
>    \shape{action}
>    \text{Box A}
>    \connection[bt]{B}
>  \stopFLOWcell
>{
>  \startFLOWcell
>    \name {B}
>    \location{1,2}
>    \shape{action}
>    \text{Box B}
>  \stopFLOWcell
>}
>
>%  \startFLOWcell
>%    \name {C}
>%    \location{1,3}
>%    \shape{action}
>%    \text{Box C}
>%  \stopFLOWcell
>
>\stopFLOWchart
>\FLOWchart[cells]
>\stoptext

During a first pass, the dimensions are determined, and this happens 
locally, which means that in this case a 1 by 1 grid is taken; adding the 
third cell kind of obscure this since now the grid is 1 by 3; the solution 
is a small patch in m-chart:

\def\getFLOWlocationA#1,#2\end
   {\ifnum0#1>\FLOWwidth \xdef\FLOWwidth {#1}\fi
    \ifnum0#2>\FLOWheight\xdef\FLOWheight{#2}\fi}

(there are a few more places, but that's not important now)

Hans
-------------------------------------------------------------------------
                                   Hans Hagen | PRAGMA ADE | pragma@wxs.nl
                       Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
  tel: +31 (0)38 477 53 69 | fax: +31 (0)38 477 53 74 | www.pragma-ade.com
-------------------------------------------------------------------------
                        information: http://www.pragma-ade.com/roadmap.pdf
                     documentation: http://www.pragma-ade.com/showcase.pdf
-------------------------------------------------------------------------