Small correction :

\starttext

\startluacode
     function Binom(n,k)
       if k > n then
             return 0
       elseif (n == 0 or k == 0) then
             return 1
       else
             return (n*Binom(n-1,k-1))/k
       end

    end

    context.startxtable({"align={middle,lohi},
width=1cm,offset=0.8ex,bodyfont=9pt"})
    for i = 0, 9 do
          context.startxrow({"background=color,backgroundcolor=cyan"})
            for j = 0, i do
                  context.startxcell()
                     context(Binom(i,j))
                  context.stopxcell()
             end
          context.stopxrow()
    end
   context.stopxtable()

\stopluacode

\stoptext

Le sam. 18 juil. 2020 à 22:25, Fabrice Couvreur <fabrice1.couvreur@gmail.com>
a écrit :

> Hi Wolfgang,
>
> It works but why did you ask this question since I finally use context ?
>
>> Are you sure you want to use context(...) here?
>>
> How not to display the .0 ?
> Fabrice
>
> Le sam. 18 juil. 2020 à 22:22, Wolfgang Schuster <
> wolfgang.schuster.lists@gmail.com> a écrit :
>
>> Fabrice Couvreur schrieb am 18.07.2020 um 22:09:
>> > Hi,
>> > I improved the code to be able to display the grid but I cannot display
>> > the coefficients.
>> > Thank you
>> > Fabrice
>> >
>> > \starttext
>> >
>> > \startluacode
>> >       function Binom(n,k)
>> >         if k > n then
>> >               return 0
>> >         elseif (n == 0 or k == 0) then
>> >               return 1
>> >         else
>> >               return (n*Binom(n-1,k-1))/k
>> >         end
>> >
>> >      end
>> >
>> >      context.startxtable({"align={middle,lohi},
>> > width=1.2cm,offset=0.8ex,bodyfont=9pt"})
>> >      for i = 1, 10 do
>> >            context.startxrow({"background=color,backgroundcolor=cyan"})
>> >              for j = 1, i do
>> >                    context.startxcell()
>> >                       \ctxlua{context(Binom(i,j))}
>>
>> Remove \ctxlua:
>>
>> context(Binom(i,j))
>>
>> Wolfgang
>>
>> ___________________________________________________________________________________
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>>
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>