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% File: TeX Inputs cellular.doc
% Author: J E Pittman
% Bitnet: JEPTeX@TAMVenus
% Internet: JEPTeX@Venus.TAMU.EDU
% Date: November 8, 1988
A cellular table is specified by:
\begincellular{specifications that change defaults}
appropriate macro definitions
column header specifications
row specifications (header and data)
\endcellular
The following are examples of specifications that change defaults:
\pixelwidth=1in
\divide\pixelwidth by 300
The pixel width dimension register should be set to the resolution
of the device used. The default is 1/300th of an inch.
\setverticaladjustment -or- \sethorizontaladjustment
Some printers (such as the Xerox 9700s and 4050s) produce vertical
and horizontal rules that have a different visual thickness for the
same specified thickness. The macros set vertical and set
horizontal adjustment specified that vertical or horizontal rules
are to be thickened by pixel width, which may correct this problem.
\edef\everycolumn{\everycolumn
\leftrulewidth=0.4pt\relax
\rightrulewidth=\leftrulewidth
\leftborderskip=6pt plus 1fil\relax
\rightborderskip=\leftborderskip
\columnwidth=\zeropt\relax
\columnwidth=\zeropt\relax
}%
An \edef can be used to add material (usually default overrides) to
the every column macro. The information shown above reflect the
defaults. Care must be exercised to avoid introducing spurous
spaces, which will be very visible when output.
\edef\everyrow{\everyrow
\toprulewidth=0.4pt\relax
\bottomrulewidth=\toprulewidth
\topborderskip=3pt plus 1fil\relax
\bottomborderskip=\topborderskip
\rowheight=\zeropt\relax
}%
Same as every column.
\tracingexpansions=1
This specification will request notes on how column and rows are
expanded to accommedate spans.
Any sort of macros can be defined within a cellular table. An obvious
example is abbrevations for commonly used control sequence names.
A column header is specified as:
\column{specifications}
The specifications are the same as for every column. Note: There
is a considerable amount of processing required for these
specifications, wise selection of defaults can decrease execution
time significantly.
Column headers are optional.
Rows are specified as a row header (similiar to a column header) and a
series of entry specifications.
An entry specification can be any of the following:
\blank
A blank entry specification creates a completely blank spot in the
table (no rules or text).
\mergeright
A merge right specification merges the width of the entry into the
width of the entry to the right. It is used to create column
spans.
\mergedown
Similar to merge right. Note: The overhead for a merge down
specification is considerably higher than a merge right.
Therefore, when specifing an entry that spans both rows and
columns, merge rights should be used as much as possible. For
example:
> > > V V V V V
> > > V rather V V V V
> > > V than V V V V
> > > * > > > *
\entry{horizontal mode material}
An entry macro takes the specified material and formats it as
appropriate.
It is not necessary to complete every row.
Vertical mode material can be added after a row by specifying:
\noalign{vertical mode material}
at any point in the row. Multiple no aligns are permitted.
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