Dear Luigi and listers, Last year, I need to write a text for a linear algebra class. Since there are many \startmatrix … \stopmatrix and matrix calculations, I wrote a lua code which did matrix calculations and writing with a lot of help from this list. Using the code, I can write class materials easily. It is good enough for my purpose. I am not good in Lua coding, so there may be many things to be checked for efficiency and for stability.
However, I attached the code because there may be someone who need it. It is also good thing to return what I get from the list back. I hope that you enhance the code for better performance since you are an expert in Lua. I always thank to this list and to developers of ConTeXt. Best regards, Dalyoung
MatrixLuacode.tex
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>
> Message: 1
> Date: Fri, 23 May 2014 13:44:30 +0200
> From: luigi scarso <luigi.sca...@gmail.com>
> To: mailing list for ConTeXt users <ntg-context@ntg.nl>
> Subject: Re: [NTG-context] Simple command with variable number of
> arguments
> Message-ID:
> <CAG5iGsCadu33Hw=hphmde+wp1b_fcpjn0caxwjaso+vnqbj...@mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> On Fri, May 23, 2014 at 11:54 AM, Matthias Weber <matwe...@indiana.edu>wrote:
>
>> Dear All,
>>
>> I would like to define a command that expands
>>
>> \vector{2,4} % or vector[2,4] if that?s easier
>>
>> to
>>
>> \startpmatrix
>> \NC 2 \NR
>> \NC 4 \NR
>> \stoppmatrix
>>
>> and more generally
>>
>> \vector{2,4,1,7}
>>
>> to
>>
>> \startpmatrix
>> \NC 2 \NR
>> \NC 4 \NR
>> \NC 1 \NR
>> \NC 7 \NR
>> \stoppmatrix
>>
>> Any hints how to achieve this?
>>
>> Thanks,
>>
>
>
>
> \definemathmatrix
> [pmatrix]
> [left={\left(\,},right={\,\right)}]
>
> \startluacode
> document = document or {}
> document.matthias = document.matthias or {}
> local function lua_columnvector(a)
> context.startpmatrix()
> for i,v in ipairs(a) do
> context.NC() context(tostring(v)) context.NR()
> end
> context.stoppmatrix()
> end
> document.matthias.lua_columnvector = document.matthias.lua_columnvector or
> lua_columnvector
> \stopluacode
>
> \def\columnvector#1{\ctxlua{document.matthias.lua_columnvector(#1)}}
>
> \starttext
> \startformula
> \columnvector{{1,2,3}} %% watch the double { !
> \stopformula
>
>
> \stoptext
>
> --
> luigi
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