Hi Hans,
Your code runs perfectly, thanks. However, if I replace % with
\letterpercent, my code does not run
\ctxlua{print(string.format("\letterpercent g",Binomial(100,60,0.25)))}
Thank you
Fabrice
2018-01-14 13:58 GMT+01:00 Hans Hagen <pra...@wxs.nl>:
> On 1/14/2018 1:13 PM, Joseph Canedo wrote:
>
>> Hi Fabrice,
>>
>> string.format behaves more or less as C printf. You probably need to
>> specify %.4g in 1st argument.
>>
>> Hope this helps
>>
>> Best
>>
>> Joseph
>>
>> *De : *Fabrice Couvreur <mailto:fabrice1.couvr...@gmail.com>
>> *Envoyé le :*dimanche 14 janvier 2018 13:05
>> *À : *mailing list for ConTeXt users <mailto:ntg-context@ntg.nl>
>> *Objet :*[NTG-context] Problem with string.format (Lua)
>>
>> Hello,
>> I start with Lua and I try to display my result with 4 decimal places
>> without success.
>> Thank you
>> Fabrice
>>
>> \startluacode
>> function Binomial(n,k,p)
>> if k > n then return nil end
>> if k > n/2 then k = n - k end
>>
>> numer, denom = 1, 1
>> for i = 1, k do
>> numer = numer * ( n - i + 1 )
>> denom = denom * i
>> end
>> return (numer/denom) * p^k * (1-p)^(n-k)
>> end
>>
>> \stopluacode
>>
>> \starttext
>> \ctxlua{print(string.format("%g",Binomial(100,60,0.25)))}
>> \stoptext
>>
>
> the % should be \letterpercent
>
> btw, use locals for numer and denom
>
> you can also do this:
>
> \startluacode
> function document.Binomial(n,k,p)
> if k > n then
> return nil
> end
> if k > n/2 then
> k = n - k
> end
> local numer, denom = 1, 1
> for i=1,k do
> numer = numer * ( n - i + 1 )
> denom = denom * i
> end
> context("%0.5g",(numer/denom) * p^k * (1-p)^(n-k))
> end
> \stopluacode
>
> \starttext
> \ctxlua{document.Binomial(100,60,0.25)}
> \stoptext
>
> in general
>
> context("format",....)
>
> is a bit more powerful than using format
>
>
>
>
> --
>
> -----------------------------------------------------------------
> Hans Hagen | PRAGMA ADE
> Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
> tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
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