[R] Need help on a R script part

[Hugo Mildenberger]

Duncan,

it isn't really that difficult to diagnose. A google search for 

        "ss11=sample(x1, n1, replace=TRUE) "  

turned up this documented R-script 

      ttp://www2.latech.edu/~dcahoy/TwoSampleEqualVarTest.R 

as a likely source for his fragmented and mangled post; other variable 
names match as well. But besides  this, Lusk also demanded to be 
provided with a mathematical notation of the R code he posted. While 
he certainly could have followed Dexter O. Cahoy's reference to the 
underlying paper at 
   
   ttp://www.sciencedirect.com/science/article/pii/S016794731000157X

to get the theoretical background and a formal notation, I do imagine 
a tool which takes the R parse tree as input and produces a mathematical 
notation as a nicely formatted (LaTex) output, similar to what Mathematica 
does on the fly.  

At least I like this idea (h/t to Lusk) and think it should be doable for 
some less complex functions at first. Such a translator could greatly 
enhance function documentation, facilitate debugging and so on, but 
may also provide a base implemention for interfaces specific to other 
programs, thus giving R the ability to also export algorithms. 


Best regards

Hugo Mildenberger



On Saturday 25 June 2011 15:55:51 Duncan Murdoch wrote:
> On 11-06-25 11:33 AM, Mike Miller wrote:
> > I'm curious about what would cause this (see below), if it isn't a joke.
> > Is it possible that it didn't look ridiculous in the deleted HTML but the
> > text looked bad?  It's almost unreadable.  I guess the HTML gets deleted
> > because it is a waste of space, but I received a 14 MB message from this
> > list the other day.
> 
> I imagine you need to contact the poster, and find out what they sent. 
> It's hard to diagnose after it's been mangled.
> 
> Duncan Murdoch
> 
> >
> > Mike
> >
> >
> > On Fri, 24 Jun 2011, Lusk Aris wrote:
> >
> >> Hi all,
> >> I need all your help on this. I have the next part of code:............e1=x1-mean(x1)e2=x2-mean(x2)n1=length(x1)n2=length(x2N=(n1 + 
n2)nu2=sum( c(  ( x1 -mean(x1) )^2 , ( x2-mean(x2) )^2  ) )/Nss=c(e1,e2) b3= N*sum(ss^4)/ (sum( ss^2)^2)............what do lines 6-8 (mathematical 
notation)?Also the, what means part?............for(j in 1:B){ ss11=sample(x1, n1, replace=TRUE) ss12=sample(x2, n2, replace=TRUE) 
............}............????I would appreciate you could help on my inquiry, and I am awaiting for your soon answer Thx in advance, Lusk
> >> 	[[alternative HTML version deleted]]
> >
> > ______________________________________________
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> > and provide commented, minimal, self-contained, reproducible code.
> 
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