Displaying 11 results from an estimated 11 matches similar to: "Problem with lapply"
2012 Mar 01
2
'break' function in loop
Dear R helpers,
I have some difficulties in using ''break'' function with loop, and the followings are my script. What I try to do is (1) permute ''or'' first; (2) doing t-test if this ''or'' pass criteria 1 (k=1); (3) end the loop when I get 10 permutations; (4) redo everything again but this time use criteria 2 (k=2) (I have more criteria 1:n).
2012 Feb 08
1
How indices calculated in package "boot"
Hi,there,
I am using R package "boot" to bootstrap. I have one question here: does
anybody possibly know how the boot package generates the "indices" which is
used in the statistic function?
I thought "indices = sample(data, replace=TRUE)", but when I replaced
"indices" with this command and used "boot", I got different results.
Specifically,
2007 May 14
2
creating a "list of 3 dataframes" from a "list of 2 dataframes" and a dataframe?
#I wish to create a "list of three dataframes" ("results2") from a "list of two dataframes" (temp) and a dataframe ("c")?
#Please advise.
a <- data.frame(x=c(1,2,3),y=c(5,7,9))
b <- data.frame(x=c(2,4,7,9),y=c(2,3,5,4))
c <- data.frame(x=c(22,34,7,9),y=c(52,63,5,4))
results1 <- list(a,b,c) #what I want
#but this is how I need to get there
2015 May 11
1
Foreach %dopar% operator incorrectly load balancing
Dear R-SIG-Debian,
I am using R version 3.1.2 with rstudio-server 0.98.113 on debian build
3.2.0-4-amd64 #1 SMP Debian 3.2.68-1+deb7u1 x86_64 GNU/Linux.
I often use the %dopar% operator in from the foreach package to run code in
parallel. However, the only other use on the box seemingly installed a few
items and suddenly %dopar% will use far more than the number of cores I am
specifying and
2009 Jul 28
3
Help with significance. T-test?
Hi,
this is more a general statistics question I think.
I am working on a system which automatically answers user questions (such
systems are commonly called "Question Answering systems").
I evaluated different versions of the same system on a publicly available
test set.
This set contains 500 question. Naturally, for each question the answer can
be wrong or right, which is coded as
2011 Nov 29
2
aggregate syntax for grouped column means
I am calculating the mean of each column grouped by the variable 'id'.
I do this using aggregate, data.table, and plyr. My aggregate results
do not match the other two, and I am trying to figure out what is
incorrect with my syntax. Any suggestions? Thanks.
Here is the data.
myData <- structure(list(var1 = c(31.59, 32.21, 31.78, 31.34, 31.61, 31.61,
30.59, 30.84, 30.98, 30.79, 30.79,
2012 Apr 06
2
read multiaple files within one folder
Suppose we have files in one folder file1.bin, file2.bin, ... , and
1460slice(file) with dim of 720 * 360 in directory C:\\PHD\\Climate
Data\\Wind\\ and we want to read them and make a loop to go from 1 to 4
and take the average, then from 4 to 8 and so on till 1460. in the end we
will get 365 files . I need those 365 files to be in one new folder for
later use in my model
I tried using this
2011 Feb 09
1
Iterate over a list of input files?
Hi,
I've got the following code which seems to work fine for a single
file if I specify the file name explicitly in the code. What I need to
do is run it on all the files in the directory tested and augment the
data frame I'm building to have more results columns.How can I do
that?
Here's the code:
library(chron) # .Holidays / is.holiday / is.weekend
TStoDate = function
2007 May 30
2
How to search with limit by field
Hello,
I have a ferret index with 2 fields:
Acts_as_ferret :fields => [:client, :content]
If I do model.find_by_contents(query) I obtain all results by the query
but I would like to obtain 3 results for each client.
Any ideas?
Thanks for all.
--
Posted via http://www.ruby-forum.com/.
1997 Oct 23
0
R-beta: why restart()
Martyn, you write
> I don't think restart() is necessary - it just seems like an invitation to
> bad programming to me.
It's needed when comparing, say, the time to convergence (if at all) of various
iterative processes, for each of a few hundred simulated values. For example one
wants basically
function(data){
summary<-rep(NA,1000)
for(i in 1:1000){
2013 May 14
2
[Bug 1993] ssh tries to add keys to ~/.ssh/known_hosts though StrictHostKeyChecking yes is set
https://bugzilla.mindrot.org/show_bug.cgi?id=1993
alex at testcore.net changed:
What |Removed |Added
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CC| |alex at testcore.net
Version|5.9p1 |6.2p1
--- Comment #1 from alex at testcore.net ---
Also