Displaying 20 results from an estimated 30000 matches similar to: "how to initial a list to store data result?"
2010 Apr 28
1
how to remove the names in the list result
hi,everybody: I get a list as following. For each element of the list, it
has names such as "Var1" and "Freq". May I ask how to remove them?
And, may I ask how to make them form a matrix such as like concatinating
them?
Thank you!
The list I got:
[[1]]
Var1 Freq
1 -5.20726501684368 19
2 1.89099344331540 31
[[2]]
Var1
2010 May 03
3
how to rewrite this for loops in matrix form without loop
x0=rnorm(100)
y0=rpois(100,3)+1
ind=as.data.frame(table(y0))
ind1=ind[,1]
ind2=ind[,2]
phi=NULL
for (i in 1:length(ind2)){
phi[i]=sum(x0[y0==ind1[i]])/ind2[i]
}
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2010 Jun 17
3
ask a question about data sets element
for example, I have
a1=c(1,3,5)
a2=c(2,4,6)
a3=c(7,8)
a4=c(9,10)
now if I have i=5, so i in a1, then I get a feedback tag[5]=1
i=8, so i in a3, then can get tag[8]=3
in there any function to do this to check the element belongs to which
group?
thank you!!!
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2018 Jun 01
3
values of list of variable names
Hi,
I have searched the documentations of eval, substitute, expression, and
I cannot make work something like the values of a list of variable names:
lis <- ls(pattern="pr") # all variables with names containing 'pr'
What is the mantra giving me the _values_ of the variables whose names
are contained in 'lis'. eval(parse(ls(pattern="pr"))) will not do
2012 Aug 29
5
Extracting the name of a function (inverse of match.fun("myFun"))
Hi all,
is there a way to extract the name of a function, i.e. do the reverse
of match.fun applied to a character string? I would like to print out
the name of a function supplied to another function as an argument.
For example:
myFunc = function(x) { x+1 }
applyFunc = function(fnc, x)
{
fnc = match.fun(fnc)
fnc(x)
}
Is there a way to obtain "myFunc" from the argument fnc in
2010 Sep 29
1
how to to if a calculation is out range?
for example, when I am calculating a posterior density, I need to calculate
gamma(75*3+5)=gamma(220) which is out of the bound of gamma function. what
shall I do for this condition>
Thank you
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2012 Mar 29
3
scalar assignment within a vector within function
Hello,
I'm trying to create a vector of r^2 values for using a function which I
will run in a "for" loop. Example:
per<-rnorm(100,.5,.2)^2
x<-rnorm(100,10,5)
y<-rnorm(100,20,5)
fr<-data.frame(x,y,per)
test<-rep(0,9)
plotter<-function(i){
temp.i<-fr[fr$per <=(i*.10),]
with(temp.i, plot(x, y, main=(i*.10),))
mod<-lm(y~x-1,data=temp.i)
2006 Mar 10
2
lapply and list attributes
Hi
I have a list that has attributes:
attributes(lis[2])
$names
[1] "150096_at"
I want to use those attributes in a function and then use lapply to
apply that function to every element of the list, eg for simplicity's
sake:
my.fun <- function(x) {
attributes(x)
}
Then
l2 <- lapply(lis, my.fun)
It seems that "attributes(x)" within the function is not the
2008 Jul 01
5
trivial list question
Dear experts,
For the makeGenotype function I need a list as in the example. However,
since my list needs to be 184 long there must be an easy way to make it.
>list(1:2,3:4,5:6,7:8)
[[1]]
[1] 1 2
[[2]]
[1] 3 4
[[3]]
[1] 5 6
[[4]]
[1] 7 8
I have tried
lis<-1:184
dim(lis)=c(92,2,1)
as.list(lis)
and several other options. Any suggestions?
many thanks
Marco
[[alternative
2005 Mar 16
8
Summing up matrices in a list
Dear all,
I think that my question is very simple but I failed to solve it.
I have a list which elements are matrices like this:
>mylist
[[1]]
[,1] [,2] [,3]
[1,] 1 3 5
[2,] 2 4 6
[[2]]
[,1] [,2] [,3]
[1,] 7 9 11
[2,] 8 10 12
I'd like to create a matrix M<-mylist[[1]]+mylist[[2]]
[,1] [,2] [,3]
[1,] 8 12 16
[2,] 10 14 18
2007 Feb 22
3
List filtration
Hello R-ologists,
Imagine you have a list "list" like so:
>list
[[1]]
[1] "IPI00776145.1" "IPI00776187.1"
[[2]]
[1] "Something" "IPI00807764.1" "IPI00807887.1"
[[3]]
[1] "IPI00807764.1"
[[4]]
[1] "Somethingelse"
What I need to achieve is a filtered list "list2" like so:
>list2
[[1]]
[1]
2003 Aug 11
4
subscripts in lists
I am tying myself in knots over subscripts when applied to lists
I have a list along the lines of:
lis<-list(c("a","b","next","want1","c"),c("d", "next", "want2", "a"))
>From which I want to extract the values following "next" in each
member of the list, i.e. something along the lines of
2018 Apr 17
5
Hacked
No, I do not use gmail, still got dirty spam email twice.
-----Original Message-----
From: R-help [mailto:r-help-bounces at r-project.org] On Behalf Of Fowler, Mark
Sent: Tuesday, April 17, 2018 12:32 PM
To: Luis Puerto; Peter Langfelder
Cc: R-Help ML R-Project; Neotropical bat risk assessments
Subject: Re: [R] Hacked
[Attention: This email came from an external source. Do not open attachments
2018 Apr 17
2
Hacked
I've been receiving nasty e-mails too. No g-mail, but official/work e-mail address.
-----Original Message-----
From: R-help <r-help-bounces at r-project.org> On Behalf Of Rui Barradas
Sent: Tuesday, April 17, 2018 5:09 PM
To: Ding, Yuan Chun <ycding at coh.org>; Fowler, Mark <Mark.Fowler at dfo-mpo.gc.ca>; Luis Puerto <luiss.puerto at gmail.com>; Peter Langfelder
2018 Apr 18
3
Hacked
Hi All: I lately get a lot more spam-porn type emails lately also but I
don't know if they are due to me being on
the R-list.
On Tue, Apr 17, 2018 at 5:09 PM, Rui Barradas <ruipbarradas at sapo.pt> wrote:
> Hello,
>
> Nor do I, no gmail, also got spam.
>
> Rui Barradas
>
> On 4/17/2018 8:34 PM, Ding, Yuan Chun wrote:
>
>> No, I do not use gmail, still
2005 May 10
4
summary statistics for lists of matrices or dataframes
Is there a simple way to calculate summary statistics for all the
matrices or dataframes in a list? For example:
> z <- list(matrix(c(2,2,2,2), ncol = 2), matrix(c(4,4,4,4), ncol = 2))
> z
[[1]]
[,1] [,2]
[1,] 2 2
[2,] 2 2
[[2]]
[,1] [,2]
[1,] 4 4
[2,] 4 4
>
I would like to calculate, for example, the mean value for each
cell. I can do that the hard
2018 Apr 17
0
Hacked
Hello,
Nor do I, no gmail, also got spam.
Rui Barradas
On 4/17/2018 8:34 PM, Ding, Yuan Chun wrote:
> No, I do not use gmail, still got dirty spam email twice.
>
> -----Original Message-----
> From: R-help [mailto:r-help-bounces at r-project.org] On Behalf Of Fowler, Mark
> Sent: Tuesday, April 17, 2018 12:32 PM
> To: Luis Puerto; Peter Langfelder
> Cc: R-Help ML
2018 Apr 12
1
WGCNA package installation segmentation fault
Hi all,
a user contacted me about a segfault when installing WGCNA package
dowloaded from CRAN. I also see a segfault like that on certain
installs of R.
The package passes all CRAN checks, so presumably this has something
to do with the R installation or environment. The R versions here are
not the newest but I would guess that this is not an R version issue.
I'm attaching two
2019 May 08
3
openblas
On Wed, 8 May 2019 at 04:52, Peter Langfelder
<peter.langfelder at gmail.com> wrote:
>
> (CCing the R-devel list, maybe someone will have a better answer.)
>
> To be honest, I don't know how to. I wasn't able to configure R to use
> OpenBLAS using the configure script and options on my Linux Fedora system.
> I configure it without external BLAS, then replace the
2007 Apr 03
5
converting a list to a data.frame
Hello,
I have a list with n numerical components of different length (3, 4 or 5
values in each component of the list); I need to export this as a text
file where each component of the list will be a row and where missing
values should fill in the blanks due to the different lengths of the
components of the list.
I think that as a first step I should convert my list to a data frame,
but this is