Hi all, I need to define numerical coefficients (essentially at random) and then use them with commands, say like \CoeffAlpha, \CoeffBeta, and so on. More precisely, how can I define the command \RandomCoeff, so that \RandomCoeff{Beta}{1}{10} yields a command named \CoeffBeta, which is a random number chosen between 1 and 10? I tried to use the following approach, but could not make it work: %%% begin random-coeff.tex \setuprandomize[2012] % set a seed \ctxlua{CoeffAlpha = math.random(1,10) ;} \def\CoeffAlpha{\ctxlua{tex.print(CoeffAlpha)}} %%%%% \define[3]\RandomCoeff{% \ctxlua{a = math.random(#2,#3)} % \csname{Coeff#1}\endcsname{\ctxlua{tex.print(a)}} %% this line does not work as expected... } \starttext \CoeffAlpha \RandomCoeff{Beta}{1}{10} \ctxlua{tex.print(a)} %\CoeffBeta \stoptext %%% end random-coeff.tex Thanks in advance for any suggestion or hint. Best regards: OK
Reccently I did something random in ctxlua. I post it in the hope it will be useful. Hans van der Meer \startluacode -- Define our namespace as hvdm hvdm = hvdm or {} -- Return random series of numbers 1..n depending on the number of arguments function hvdm.randomseries (n, straight) local done = {} for i = 1, n do done[i] = i end if straight == "false" then return table.concat(done,",") end local result = "" for i = n, 2, -1 do local r = math.random(i) result = result .. done[r] .. "," table.remove(done,r) end result = result .. done[1] return result end \stopluacode \def\RandomSeed#1{\directlua{math.randomseed(#1)}} \def\RandomValue{\directlua{tex.print(math.random())}} \def\RandomRange#1{\directlua{tex.print(math.random(#1))}} \def\RandomSeries[#1]#2{\ctxlua{tex.print(hvdm.randomseries(#2,"#1"))}% On 5 jan. 2012, at 21:05, Otared Kavian wrote:
Hi all,
I need to define numerical coefficients (essentially at random) and then use them with commands, say like \CoeffAlpha, \CoeffBeta, and so on. More precisely, how can I define the command \RandomCoeff, so that \RandomCoeff{Beta}{1}{10} yields a command named \CoeffBeta, which is a random number chosen between 1 and 10?
I tried to use the following approach, but could not make it work:
%%% begin random-coeff.tex \setuprandomize[2012] % set a seed
\ctxlua{CoeffAlpha = math.random(1,10) ;} \def\CoeffAlpha{\ctxlua{tex.print(CoeffAlpha)}}
%%%%% \define[3]\RandomCoeff{% \ctxlua{a = math.random(#2,#3)} % \csname{Coeff#1}\endcsname{\ctxlua{tex.print(a)}} %% this line does not work as expected... }
\starttext \CoeffAlpha
\RandomCoeff{Beta}{1}{10}
\ctxlua{tex.print(a)}
%\CoeffBeta
\stoptext %%% end random-coeff.tex
Thanks in advance for any suggestion or hint. Best regards: OK
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Am 05.01.2012 um 21:11 schrieb Meer, H. van der:
Reccently I did something random in ctxlua. I post it in the hope it will be useful.
Hans van der Meer
\startluacode -- Define our namespace as hvdm hvdm = hvdm or {}
Don’t use a global namespace, you can use “userdata”. userdata = userdata or { } userdata.hvdm = userdata.hvdm or { } Wolfgang
Thanks Hans, in another problem I was looking for commands such as \RandomRange, \RandomSeries: I am going to use your ideas! It is incredible that on this list one gets solutions even for problems one didn't dare to ask :-) Best regards: OK On 5 janv. 2012, at 21:11, Meer, H. van der wrote:
Reccently I did something random in ctxlua. I post it in the hope it will be useful.
Hans van der Meer
\startluacode -- Define our namespace as hvdm hvdm = hvdm or {}
-- Return random series of numbers 1..n depending on the number of arguments function hvdm.randomseries (n, straight) local done = {} for i = 1, n do done[i] = i end if straight == "false" then return table.concat(done,",") end local result = "" for i = n, 2, -1 do local r = math.random(i) result = result .. done[r] .. "," table.remove(done,r) end result = result .. done[1] return result end \stopluacode \def\RandomSeed#1{\directlua{math.randomseed(#1)}} \def\RandomValue{\directlua{tex.print(math.random())}} \def\RandomRange#1{\directlua{tex.print(math.random(#1))}} \def\RandomSeries[#1]#2{\ctxlua{tex.print(hvdm.randomseries(#2,"#1"))}%
On 5 jan. 2012, at 21:05, Otared Kavian wrote:
Hi all,
I need to define numerical coefficients (essentially at random) and then use them with commands, say like \CoeffAlpha, \CoeffBeta, and so on. More precisely, how can I define the command \RandomCoeff, so that \RandomCoeff{Beta}{1}{10} yields a command named \CoeffBeta, which is a random number chosen between 1 and 10?
I tried to use the following approach, but could not make it work:
%%% begin random-coeff.tex \setuprandomize[2012] % set a seed
\ctxlua{CoeffAlpha = math.random(1,10) ;} \def\CoeffAlpha{\ctxlua{tex.print(CoeffAlpha)}}
%%%%% \define[3]\RandomCoeff{% \ctxlua{a = math.random(#2,#3)} % \csname{Coeff#1}\endcsname{\ctxlua{tex.print(a)}} %% this line does not work as expected... }
\starttext \CoeffAlpha
\RandomCoeff{Beta}{1}{10}
\ctxlua{tex.print(a)}
%\CoeffBeta
\stoptext %%% end random-coeff.tex
Thanks in advance for any suggestion or hint. Best regards: OK
___________________________________________________________________________________ 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://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________
___________________________________________________________________________________ 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://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________
On Thu, Jan 05 2012, Otared Kavian wrote:
\define[3]\RandomCoeff{% \ctxlua{a = math.random(#2,#3)} % \csname{Coeff#1}\endcsname{\ctxlua{tex.print(a)}} %% this line does not work as expected...
\setuprandomize[2012] \define[3]\RandomCoeff{% \expandafter\def\csname Coeff#1\endcsname{\ctxlua{tex.print(math.random(#2,#3))}}} \starttext \RandomCoeff{Alpha}{1}{10} \RandomCoeff{Beta}{2}{20} \CoeffAlpha \CoeffBeta \stoptext -- Peter
Am 05.01.2012 um 21:17 schrieb Peter Münster:
On Thu, Jan 05 2012, Otared Kavian wrote:
\define[3]\RandomCoeff{% \ctxlua{a = math.random(#2,#3)} % \csname{Coeff#1}\endcsname{\ctxlua{tex.print(a)}} %% this line does not work as expected...
\setuprandomize[2012] \define[3]\RandomCoeff{% \expandafter\def\csname Coeff#1\endcsname{\ctxlua{tex.print(math.random(#2,#3))}}}
\setvalue{Coeff#1}{…} Wolfgang
Thanks for Wolfgang: your solution, that is \setuprandomize[2012] \define[3]\RandomCoeff{% \setvalue{Coeff#1}{\ctxlua{tex.print(math.random(#2,#3))}}} works indeed and it is somehow simpler than using \expandafter\csname, and as a matter of fact, after reading your message I searched in the ConTeXt manuals written by Hans, and found that \setvalue is defined on page 93 of module-01.pdf as \def\setvalue#1{\expandafter \def\csname#1\endcsname} so it is better to use it. Best regards: OK On 5 janv. 2012, at 21:18, Wolfgang Schuster wrote:
Am 05.01.2012 um 21:17 schrieb Peter Münster:
On Thu, Jan 05 2012, Otared Kavian wrote:
\define[3]\RandomCoeff{% \ctxlua{a = math.random(#2,#3)} % \csname{Coeff#1}\endcsname{\ctxlua{tex.print(a)}} %% this line does not work as expected...
\setuprandomize[2012] \define[3]\RandomCoeff{% \expandafter\def\csname Coeff#1\endcsname{\ctxlua{tex.print(math.random(#2,#3))}}}
\setvalue{Coeff#1}{…}
Wolfgang
Hi again Wolfgang and Peter, The solution you provided to my problem is great but has a small issue… Considering the definition \define[3]\RandomCoeff{% \setvalue{Coeff#1}{\ctxlua{tex.print(math.random(#2,#3))}} } after saying \RandomCoeff{Alpha}{1}{10} one gets \CoeffAlpha, but if I use several times \CoeffAlpha, it takes a new value each time, an effect which is undesirable in what I am willing to do. Is there a way to somehow « freeze » the value of \CoeffAlpha once it is defined? Best regards: OK PS: here is the complete example: \define[3]\RandomCoeff{% \setvalue{Coeff#1}{\ctxlua{tex.print(math.random(#2,#3))}} } \starttext \RandomCoeff{Alpha}{1}{10} \RandomCoeff{Beta}{10}{100} \CoeffAlpha \CoeffBeta \CoeffAlpha \CoeffBeta \stoptext On 5 janv. 2012, at 21:18, Wolfgang Schuster wrote:
Am 05.01.2012 um 21:17 schrieb Peter Münster:
On Thu, Jan 05 2012, Otared Kavian wrote:
\define[3]\RandomCoeff{% \ctxlua{a = math.random(#2,#3)} % \csname{Coeff#1}\endcsname{\ctxlua{tex.print(a)}} %% this line does not work as expected...
\setuprandomize[2012] \define[3]\RandomCoeff{% \expandafter\def\csname Coeff#1\endcsname{\ctxlua{tex.print(math.random(#2,#3))}}}
\setvalue{Coeff#1}{…}
Wolfgang
Sorry for the noise… I found the answer to my last question in module-01.pdf, pages 92 and 93: the right definition is \define[3]\RandomCoeff{% \setevalue{Coeff#1}{\ctxlua{tex.print(math.random(#2,#3))}} } that is one has to use \setevalue instead of \setvalue (that is \edef instead of \def). Best regards: OK On 5 janv. 2012, at 22:24, Otared Kavian wrote:
Hi again Wolfgang and Peter,
The solution you provided to my problem is great but has a small issue… Considering the definition
\define[3]\RandomCoeff{% \setvalue{Coeff#1}{\ctxlua{tex.print(math.random(#2,#3))}} }
after saying \RandomCoeff{Alpha}{1}{10} one gets \CoeffAlpha, but if I use several times \CoeffAlpha, it takes a new value each time, an effect which is undesirable in what I am willing to do. Is there a way to somehow « freeze » the value of \CoeffAlpha once it is defined?
Best regards: OK PS: here is the complete example:
\define[3]\RandomCoeff{% \setvalue{Coeff#1}{\ctxlua{tex.print(math.random(#2,#3))}} }
\starttext \RandomCoeff{Alpha}{1}{10} \RandomCoeff{Beta}{10}{100}
\CoeffAlpha
\CoeffBeta
\CoeffAlpha
\CoeffBeta
\stoptext
On 5 janv. 2012, at 21:18, Wolfgang Schuster wrote:
Am 05.01.2012 um 21:17 schrieb Peter Münster:
On Thu, Jan 05 2012, Otared Kavian wrote:
\define[3]\RandomCoeff{% \ctxlua{a = math.random(#2,#3)} % \csname{Coeff#1}\endcsname{\ctxlua{tex.print(a)}} %% this line does not work as expected...
\setuprandomize[2012] \define[3]\RandomCoeff{% \expandafter\def\csname Coeff#1\endcsname{\ctxlua{tex.print(math.random(#2,#3))}}}
\setvalue{Coeff#1}{…}
Wolfgang
Thanks Peter, I had tried \expandafter\xdef, \edef, \gdef, but not \expandafter\def… Thanks for your quick answer: that's exactly what I was looking for. Best regards: OK On 5 janv. 2012, at 21:17, Peter Münster wrote:
On Thu, Jan 05 2012, Otared Kavian wrote:
\define[3]\RandomCoeff{% \ctxlua{a = math.random(#2,#3)} % \csname{Coeff#1}\endcsname{\ctxlua{tex.print(a)}} %% this line does not work as expected...
\setuprandomize[2012] \define[3]\RandomCoeff{% \expandafter\def\csname Coeff#1\endcsname{\ctxlua{tex.print(math.random(#2,#3))}}} \starttext \RandomCoeff{Alpha}{1}{10} \RandomCoeff{Beta}{2}{20} \CoeffAlpha \CoeffBeta \stoptext
-- Peter ___________________________________________________________________________________ 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://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________
participants (4)
-
Meer, H. van der -
Otared Kavian -
pmlists＠free.fr -
Wolfgang Schuster