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.couvreur@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
------------------------------------------------------------ -----
____________________________________________________________ _______________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage : http://www.pragma-ade.nl / http://context.aanhet.net
archive : https://bitbucket.org/phg/context-mirror/commits/
wiki : http://contextgarden.net
____________________________________________________________ _______________________