Dear expeRts,
I would like to use a oneway_test (from package coin) to test whether
two groups differ on various variables. The variables are encoded
within a data frame. Unfortunately, I obtained an error, that I don't
understand. Could you please help me ?
Example:
library(coin)
y -
On 07/05/2009 6:11 AM, Matthieu Dubois wrote:
Dear expeRts,
I would like to use a oneway_test (from package coin) to test whether
two groups differ on various variables. The variables are encoded
within a data frame. Unfortunately, I obtained an error, that I don't
understand. Could you
That's a scoping problem, I think a bug in oneway_test. Because the formula
var ~ group is created with the anonymous function within lapply, its
environment should be the evaluation frame of that function call and var
should be visible. If I replace oneway_test() with lm() it works.
I
I need one more clarification here :
Here I did :
fn - function(i) return(list(i, i^2))
ss = sapply(1:4, fn)
Here the object ss should be a matrix object :
is.matrix(ss)
However I feel it lacks some the matrix object properties. For example the
syntax min(ss[1,]) generates an error :
Error in
megh wrote:
I need one more clarification here :
Here I did :
fn - function(i) return(list(i, i^2))
ss = sapply(1:4, fn)
Here the object ss should be a matrix object :
is.matrix(ss)
However I feel it lacks some the matrix object properties. For example the
syntax min(ss[1,]) generates an
Try str(ss) to see what it really looks like. You probably want:
fn - function(i) c(i, i^2)
On Sat, Nov 22, 2008 at 4:54 AM, megh [EMAIL PROTECTED] wrote:
I need one more clarification here :
Here I did :
fn - function(i) return(list(i, i^2))
ss = sapply(1:4, fn)
Here the object ss
I have written following codes, with intention to get a list with values
1,2,9,16 :
fn - function(i) return(i^2)
lapply(1:4, fn, i)
However I got following error :
Error in FUN(1:4[[1L]], ...) : unused argument(s) (1)
Can anyone please tell me what will be the correct code here?
Regards,
--
Hi,
you are feeding lapply i as an optional argument, which is passed to
fn() and causes an error. Just use lapply(1:4, fn), or better yet,
sapply,
fn - function(i) return(i^2)
sapply(1:4, fn)
[1] 1 4 9 16
Hope this helps,
baptiste
On 20 Nov 2008, at 16:31, megh wrote:
I have
on 11/20/2008 10:31 AM megh wrote:
I have written following codes, with intention to get a list with values
1,2,9,16 :
fn - function(i) return(i^2)
lapply(1:4, fn, i)
However I got following error :
Error in FUN(1:4[[1L]], ...) : unused argument(s) (1)
Can anyone please tell me what
lapply already passes the first arg to fn and by specifying the
i (which is undefined -- its only defined within fn) it would be
trying to to pass a second arg to fn yet fn takes only takes
one arg. Try these:
lapply(1:4, fn)
lapply(1:4, ^, 2)
On Thu, Nov 20, 2008 at 11:31 AM, megh [EMAIL
] On
Behalf Of Marc Schwartz
Sent: Thursday, November 20, 2008 8:50 AM
To: megh
Cc: r-help@r-project.org
Subject: Re: [R] Error with lapply
on 11/20/2008 10:31 AM megh wrote:
I have written following codes, with intention to get a list with values
1,2,9,16 :
fn - function(i) return(i^2)
lapply
Dear all,
I am getting a error while using lapply to generate plots. The variable
.name is used to identify each plot in the main variable. The method
worked once but afterwards seems to throw up an error when used in a
different case. The input ...
dataOut - lapply(names(dataIn), FUN =
Dear all,
I am getting a error while using lapply to generate plots. The variable
.name is used to identify each plot in the main variable. The method
worked once but afterwards seems to throw up an error when used in a
different case. The input ...
dataOut - lapply(names(dataIn), FUN =
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