Rainer,In my view spreadtab is exactly what you are after, but not 'out of the box' because you will be immersed in ERT and it will hardly seem worth it. I created a LyX module earlier in the year to aid using spreadtab. Since then spreadtab has been updated (and gained a command for LyX users through my nagging the developer Christian Tellechea). Unfortunately, the changes in the newer spreadtab (v.0.4a) mean the earlier module won't work with the new version. I've had updating this on my mind for the last 3 months but other work has got in the way. Your request has spurred me to action and I include at the bottom of this email the revised module which will work with spreadtab 0.4 (but not 0.3).
If you copy this to a text editor and save as spreadtab.module in your user directory for LyX layouts (in Windows on my machine, C:\Users\Andrew\AppData\Roaming\LyX2.0\layouts) and reconfigure LyX so it recognises the new module, then all you need to do for your quote is something like the following. Create a table in LyX like so,
`Main task1 `Secondary task1.1 30.00
`Secondary task1.2 20.00
`Secondary task1.3 50.00
`Main task2 `Secondary task2.1 30.75
`Secondary task2.2 20.50
`Secondary task2.3 50.00
`Total sum(c1:c6)
or something similar, position the cursor hard before the table and from
the drop-down list of environments select sLTable, nestling at the
bottom with sLTablePlus. Now when you produce the pdf you will find the
sum of the figures totalled in the bottom-right cell. (Note the grave
accents ` in the first two columns -- they show spreadtab that these are
text cells, not numeric ones. As in spreadsheets the columns are a, b,
c, ... and the rows 1, 2, 3, ...) In this case no ERT is needed at all.
ERT is needed if you want to multiply figures because the multiply symbol * is 'protected' by LyX -- if you look at View Source you'll see it is enclosed in braces {*} which confuses spreadtab. In that case the formula does need to be in ERT. The same goes for some other operations, but addition, subtraction and division can be managed without any ERT.
I've attached a file SpreadtabWithLyX in 7-zipped format (9 pages when compiled to pdf) which has other instructions (e.g. number formatting).
Andrew
************************************
#\DeclareLyXModule[spreadtab.sty,fp.sty,xstring.sty]{Spreadtab}
#DescriptionBegin
#Adds commands which convert LyX tables to spreadtab tables. These
#allow columns of numbers to be summed and other spreadsheet-like
#calculations. The tables are built in LyX using its table toolbar.
#The calculated values appear only in the pdf (ps, dvi etc) document
#not in LyX. A one-celled table provides a calculator of sorts.
#DescriptionEnd
#
#v.1.1 2011-10-28
#Assumes version 0.4a of spreadtab.sty and
#will fail with 0.3 and earlier versions.
#Author: Andrew Parsloe <apars...@clear.net.nz>
#The author & maintainer of spreadtab.sty is
#Christian Tellechea <unbonpe...@gmail.com>
Format 35
AddToPreamble
\usepackage{spreadtab}
%for LyX
\STeol{\tabularnewline}
%default text cell marker is @ but ` is neater
\renewcommand{\STtextcell}{`}
EndPreamble
Style sLTable
Category Tables
LatexType Command
LatexName sLTable
OptionalArgs 1
NextNoIndent 0
TopSep 0.5
BottomSep 0.5
Align Center
Preamble
\makeatletter
\def\sLt@b[#1]#2\begin#3#4#5\end#6{\spreadtab[#1]{{#3}{#4}}#5\endspreadtab}
\newcommand{\sLTable}[2][]{\begin{center}\sLt@b[#1]#2\end{center}}
\makeatother
EndPreamble
End
Style sLTablePlus
CopyStyle sLTable
LatexName sLTablePlus
Preamble
\makeatletter
\def\sLt@bplus[#1]#2\begin#3#4#5\end#6{\spreadtab[#1]{{#3}{#2}}#5\endspreadtab}
\newcommand{\sLTablePlus}[3][]{\begin{center}\sLt@bplus#1#2#3\end{center}}
\makeatother
EndPreamble
End
InsetLayout Flex:sLCalculate
LyXType custom
LatexType Command
LatexName sLdocalc
ContentAsLabel 1
Decoration Classic
Display 0
LabelString Calc
Multipar 0
PassThru 1
ResetsFont 0
Preamble
\def\sLdocalc#1{\mbox{\kern -.6em%
\spreadtab[\STsavecell\sLlastcalc{a1}]{{tabular}{c}}#1\tabularnewline\endspreadtab%
\kern -.6em}%
}
EndPreamble
End
InsetLayout Flex:sLNumberFormat
LyXType custom
LatexType Command
LatexName sLdoNF
ContentAsLabel 1
Decoration Classic
Font
Color phantomtext
End
Display 0
LabelString Fmt
Multipar 0
PassThru 1
ResetsFont 0
Preamble
\def\sLdoNF#1{\sLdofmt#1}
\def\sLdofmt#1,#2{\def\sLsigfig{#1}%
\if*#2\def\sLfillzeros{*}\else\def\sLfillzeros{}\fi%
\expandafter\STautoround\sLfillzeros{\sLsigfig}}
EndPreamble
End
SpreadtabWithLyX.7z
Description: Binary data
