Just found 'ngCMatrix' class, it must be the way to go?
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Message: 47Date: Mon, 20 Dec 2010 17:41:20 +1100
From: Kohleth Chia
To: r-help@r-project.org
Subject: [R] package "arules" - 'transpose' of the transactions
Messa
Suppose this is my list of transactions:
set.seed(200)
tran=random.transactions(100,3)
inspect(tran)
itemstransactionID
1 {item80}trans1
2 {item8,
item20}trans2
3 {item28}trans3
I want to get the 'transpose' of the data, i.e.
transactionID items
1 {trans2
Hi,
layout(1:2) # split the screen into 2 regions
plot(1:2) # plot in region 1
plot(1:2) # plot in region 2
par(mfg=c(1,1)) # Then I want to update the plot in region 1
plot(1.5,1.5)
But the this last plot overlays with my 1st plot.
Q: How do I replace my first plot with my last?
NOTE ##
elp-boun...@r-project.org [mailto:r-help-boun...@r-
>> project.org] On Behalf Of Kohleth Chia
>> Sent: Wednesday, November 24, 2010 5:53 AM
>> To: r-help@r-project.org
>> Subject: [R] Getting user input without hitting enter
>>
>> Hi,
>>
>> I am writin
Hi,
I am writing a function which requires user to enter a single character.
Something like:
hello<-function(){
input<-scan(n=1,what="a")
if(input=="h")cat("Hello") # What goes after the 'if' is completely
arbitrary, for simplicity sake I simply put a cat command here.
}
I want
; Cochran-Mantel-Haenzel test, of which Cochran's Q is a special case:
>
> mantelhaen.test
> cmh.test (lawstat package)
>
> D.
>
> On Tue, Sep 28, 2010 at 5:46 AM, Kohleth Chia wrote:
> Thanks for all the suggestions. It seems that I still have to write my own
>
.ch/pipermail/r-help/2006-September/113156.html
>
> HTH,
> Dennis
>
> On Mon, Sep 27, 2010 at 7:27 PM, Kohleth Chia wrote:
> Dear all,
>
> I am trying to look for a built in function that performs the cochran Q
> test.
> that is, cochranq.test(X)
> where X is a
Dear all,
I am trying to look for a built in function that performs the cochran Q
test.
that is, cochranq.test(X)
where X is a contingency table (maybe a matrix or data.frame).
The output will naturally be the test statisitcs, p-value, etc.
A quick search on Google gives me the cochran.test in th
Hi,
How can we vectorize multiple for loops?
E.g. how do you vectorize this:
for (i in 1:10){
for(j in 1:25){
for(k in 1:19){
x[i,j,k]=i*k-j
}
}
}
THanks
KC
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Hi,
Using the package lpSolve API, I need to build a 2000*10 constraint matrix.
I wonder which method is faster:
(a)
model = make.lp(0,0)
add.constraint(model, ...)
or
(b)
model = make.lp(2000,10)
set.constraint(model,...)
Thanks
KC
_
Dear all,
When I coerce a vector into a multi dimensional array, I would like R to start
filling the array along the last dimension, then the 2nd last etc.
Let's jump straight into an example.
x <- 1 : 24
y <- array(dim=c(2,2,6))
I would like to have:
y[1,1,1] = 1
y[1,1,2] = 2
...
y[1,1,6] = 6
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