That's much more fair I failed to note that extra line of work.
Good to know looping can be avoided.
Thanks!
-Original Message-
From: arun [mailto:smartpink...@yahoo.com]
Sent: August 20, 2013 11:11 AM
To: Folkes, Michael
Cc: R help
Subject: Re: function on columns of two arrays
Hi Mich
Hi Michael,
I run it on my system after deleting one of the lines from method1 (as it was
not necessary)
method1 <- function(){
a1<- data.frame(a)
b1<- data.frame(b)
lapply(seq_len(ncol(a1)),function(i) summary(lm(b1[,i]~a1[,i]))$coef)
}
linRegFun<- function(x,y){
res<- summary(lm(y~x))$
Here's a tiny summary of the speed results using different methods to
run lm on common columns from two arrays.
Sadly looping is fastest. I don't know if any are sensitive to array
dimensions (more columns, fewer layers etc).
I invite correction, or suggestions for improvement to avoid looping.
Goi
97203-5452
-Original Message-
From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org]
On Behalf Of Folkes, Michael
Sent: Tuesday, August 20, 2013 12:34 AM
To: r-help@r-project.org
Subject: [R] function on columns of two arrays
I've spent a bit too long searching the h
l"
To: r-help@r-project.org
Cc:
Sent: Tuesday, August 20, 2013 3:34 AM
Subject: [R] function on columns of two arrays
I've spent a bit too long searching the help history and attempting to apply
some logic to the following:
I have two 3D arrays each with same dim. I wish to run lm on the r
Avenue
Portland, OR 97203-5452
-Original Message-
From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On
Behalf Of Folkes, Michael
Sent: Tuesday, August 20, 2013 12:34 AM
To: r-help@r-project.org
Subject: [R] function on columns of two arrays
I've spent a bit too lon
iginal Message -
From: arun
To: "Folkes, Michael"
Cc: R help
Sent: Tuesday, August 20, 2013 7:42 AM
Subject: Re: [R] function on columns of two arrays
Hi,
May be this helps.
a1<- data.frame(a)
b1<- data.frame(b)
lapply(seq_len(ncol(a1)),function(i) lm(b1[,i]~a1[,i]))
lap
:
Sent: Tuesday, August 20, 2013 3:34 AM
Subject: [R] function on columns of two arrays
I've spent a bit too long searching the help history and attempting to apply
some logic to the following:
I have two 3D arrays each with same dim. I wish to run lm on the respective
columns of each arra
I've spent a bit too long searching the help history and attempting to apply
some logic to the following:
I have two 3D arrays each with same dim. I wish to run lm on the respective
columns of each array, preferably without loops.
We often hear chatter that sometimes apply() won't be faster "just
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