[GAP Forum] Is it possible to convert a GAP character table into a table with LaTeX format?

[Russ Woodroofe]

Dear Bernhard,
I'll give an alternative take.  Writing code to export what you want is pretty easy -- you just need to iterate through the rows and columns of the character table.  

I've attached code that takes a matrix and converts it to html (and outputs it in Gap.app -- see cocoagap.sourceforge.io ).  I think you can easily do something similar by iterating through Irr(CharacterTable(G)).

Best,

  --Russ


# code to pretty-print a matrix using html tables
HTMLPrintMatrix:=function(mat)
  local htmlstr, m, n, i, j;

  if not IsMatrix(mat) then
    return fail;
  fi;

  htmlstr:="<style>table.mf { margin-left: 1em; border-left: .1em solid black; border-right: .1em solid black;} .mf td { padding: 0 .5em; text-align: right; } </style>";

  Append(htmlstr, "<table class='mf'>");

  m:=DimensionsMat(mat)[1];
  n:=DimensionsMat(mat)[2];
  for i in [1..m] do
    Append(htmlstr, "<tr>");
    for j in [1..n] do
      Append(htmlstr, "<td>");
      Append(htmlstr, String(mat[i][j]));
      Append(htmlstr, "</td>");
    od;
    Append(htmlstr, "</tr>");
  od;
  Append(htmlstr, "</table>");
  WcHtmlOut(htmlstr);
  return htmlstr;
end;


> On 7 Sep 2018, at 15:50, Bernhard Boehmler <bernhard.boehmler at googlemail.com> wrote:
> 
> Dear Dima, dear Thomas, dear GAP Forum,
> 
> thank you very much for your answers. They do help me a lot.
> 
> Kind regards,
> Bernhard
> 
> 
> 
> 
> On Fri, Sep 7, 2018 at 1:16 PM Thomas Breuer <sam at math.rwth-aachen.de>
> wrote:
> 
>> Dear GAP Forum,
>> 
>> concerning the question about showing character tables
>> in LaTeX documents in a nice way,
>> it is not clear to me what nice means,
>> but my suggestion would be to take what `Display' or `Browse'
>> for the character table in question shows,
>> and to put this into LaTeX's verbatim environment.
>> This is suitable also for tables which have to be split
>> into several pages.
>> 
>> All the best,
>> Thomas
>> 
>> 
>> On Thu, Sep 06, 2018 at 05:01:43PM +0200, Bernhard Boehmler wrote:
>>> Dear GAP forum,
>>> 
>>> I'd like to ask the following question.
>>> 
>>> Is there an automatized way to get a LaTeX - document or LaTeX - string
>>> which display a character table computed with GAP nicely, for example as
>>> array or as table?
>>> 
>>> Thanks for the help in advance.
>>> 
>>> Yours, sincerely
>>> Bernhard Boehmler
>> 
>> 
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