colored tables work... almost

["W.H. Dekker" <wybo@servaly.hobby.nl>]

Hans Hagen wrote:

> ======================= Now how about this one ====================
> 
> \unexpanded\def\Check#1
>   {\stelomlijndin        % let op de spatie achter #1
>      [kader=uit,         % let op het gebruik van \inlijnd
>       hoogte=passend,
>       offset=1pt,
>       breedte=2.5em,
>       uitlijnen=links,
>       achtergrond=raster]%
>    \hfill
>    \ifdim#1pt=0pt
>      % forget about it
>    \else\ifdim#1pt>2pt
>      \inlijnd[achtergrondraster=.9]{\strut$#1$}%
>    \else\ifdim#1pt>8pt
>      \inlijnd[achtergrondraster=.7]{\strut$#1$}%
>    \else
>      \inlijnd[achtergrond=]{\strut$#1$}%
>    \fi\fi\fi}
> 
> \def\JC{\JustCenter}
> 
> \starttabel[|l|f{\Check}|f{\Check}|f{\Check}|]
> \HL
> \VL \LOW{method} \VL \use3 \JC Laboratory no.  \VL\SR
> \DC              \DL[3]                           \DR
> etcetera

That looked like a very interesting solution, which I translated as follows:

\starttext
\unexpanded\def\Check#1
  {\setupframed        % let op de spatie achter #1
     [frame=off,         % let op het gebruik van \inlijnd
      height=fit,
      offset=1pt,
      width=2.5em,
      align=left,
      background=color]%
   \hfill
   \def\leeg{0}  
   \ifx#1\leeg
     no data% forget it
   \else\ifdim#1pt<-3pt
     \framed[backgroundcolor=unsat]{\strut$#1$}%
   \else\ifdim#1pt<-2pt
     \framed[backgroundcolor=quest]{\strut$#1$}%
   \else\ifdim#1pt>3pt
     \framed[backgroundcolor=unsat]{\strut$#1$}%
   \else\ifdim#1pt>2pt
     \framed[backgroundcolor=quest]{\strut$#1$}%
   \else
     \framed[background=]{\strut$#1$}
   \fi\fi\fi\fi\fi}

\def\JC{\JustCenter}
\setupcolors[state=start]
\definecolor[unsat][r=1,g=.7,b=.7]
\definecolor[quest][r=1,g=.9,b=.9]

\starttable[|l|f{\Check}|f{\Check}|f{\Check}|]
%\starttable[|l|c|c|c|]
\HL
\VL \LOW{method} \VL \use3 \JC Laboratory no.  \VL\SR
\DC              \DL[3]                           \DR
\VL              \VL \JC 1 \VL \JC 2 \VL \JC 3 \VL\SR
\HL
\VL PO           \VL 25.5  \VL -0.0  \VL -2.8  \VL\FR \HL
\VL FFA          \VL  2.2  \VL -0.3  \VL  3.3  \VL\MR \HL
\VL Ranci        \VL  2.3  \VL  0.7  \VL  0.6  \VL\MR \HL
\VL NMR 20       \VL  1.9  \VL  0.7  \VL -1.0  \VL\LR
\HL
\VL \LOW{method} \VL \use3 \JC Laboratory no.  \VL\SR
\DC              \DL[3]                           \DR
\VL              \VL \JC 6 \VL \JC 5 \VL \JC 6 \VL\SR
\HL
\VL PO           \VL  1.4  \VL  2.4  \VL   0   \VL\FR
\VL FFA          \VL  0.5  \VL -0.8  \VL   0   \VL\MR
\VL Ranci        \VL -0.5  \VL   0   \VL   0   \VL\MR
\VL NMR 20       \VL -0.4  \VL   0   \VL   0   \VL\LR
\HL
\stoptable
\stoptext

So I replaced raster with color because the raster thing did not work,
possible because I translated the keywords (background,
backgroundraster, raster) wrongly. By the way: do you have a list of
english vs. dutch keywords somewhere?)

This works fine, except for the following problems:

- in your solution empty fields are considered 0, while they actually
  stand for non-measured data and may not be replaced with 0. I tried to
  solve this by testing if the cell has a single 0 (\ifx#1\leeg) but
  this does not work, the single 0's are not recognized.

- The framed numbers (both colored and white) are all shifted up with
  the top of the frame against the top of the table-cell. So the first
  column does not align with the number columns and the table becomes
  longer than without coloring. I have shown this more explicitly by
  adding some extra \HL's.

- The left vertical line of the cells containing "method" is broken in
  the middle.

- Perhaps not important, but intriguing: I don't understand the
  f{\Check}. According to the TaBlE manual this looks like a font
  redefinition, but is it?

I hope you another few of those nice suggestions!
-- 
Kind regards,
Wybo
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