Displaying 20 results from an estimated 10000 matches similar to: "Generate groups with random size but given total sample size"
2010 Jul 22
3
t.test in for loop
Dear list,
I'd like to do several t-test within a for loop. Example follows:
data1 <- rnorm(1:25)
data2 <- rnorm(1:25)
vars <- c("data1", "data2")
for (i in vars) {
t.test(i)
}
Unfortunately, it does not work because of the quotes in the vars-vector (running t.test(data1) by hand works).
How can I remove the quotes before performing the test?
Sincerely,
Arne
2005 Sep 23
1
Unexplained error
Hello,
I like to use rsync to transfer over mine and other peoples ever changing
mail folder onto a remote server.
My Server (FreeBSD 5.4) RSYNC Version is: 2.6.6 Protocol Version 29
My Client (OSX 10.4.2) RSYNC Version is: 2.6.3 Protocol Version 28
I use this command
rsync -vvv --progress --stats --recursive --times \
--perms --links \
--delete /test/my?email?folder/*
2011 Feb 09
2
Insert variable in RMySQL-Statement
Dear list,
I'm working with a MySQL-Table and would like to extract selected ids that are stored in a vector:
Ids <- c(1,2,3)
How do I insert this variable in a for loop like this:
For (a in values) {
Temp <- dbGetQuery(con,
"select * from db
Where id = <ID>";)
}
My problem is to split the select-statement and insert the current id. How can I handle this problem?
2011 Jun 29
14
[PATCH v4 0/6] btrfs: generic readeahead interface
This series introduces a generic readahead interface for btrfs trees.
The intention is to use it to speed up scrub in a first run, but balance
is another hot candidate. In general, every tree walk could be accompanied
by a readahead. Deletion of large files comes to mind, where the fetching
of the csums takes most of the time.
Also the initial build-ups of free-space-caches and
2011 Nov 25
1
Unable to reproduce Stata Heckman sample selection estimates
Hello,
I am working on reproducing someone's analysis which was done in
Stata. The analysis is estimation of a standard Heckman sample
selection model (Tobit-2), for which I am using the sampleSelection
package and the selection() function. I have a few problems with the
estimation:
1) The reported standard error for all estimates is Inf ...
vcov(selectionObject) yields Inf in every
2007 Jul 24
2
Dial out through multiple Zap groups
Hi,
I'm trying to set a rule to dial out through multiple
Zap groups so that, say, g0 is the cheaper POTS lines
group
and must be used first. However, if g0 is busy or
disconnected then try dialing out g1.
My g0 group is made up of 4 analog lines connected to
a 4-FXO card. I disconnected the RJ-11 wires from the
FXO card
to simulate a line disconnection. So theoretically all
calls should
2007 Jan 08
3
Speeding things up
Hi,
is it possible to do this operation faster? I am going over 35k data
entries and this takes quite some time.
for(cnt in 2:length(sdata$date))
{
if(sdata$value[cnt] < sdata$value[cnt - 1]) {
sdata$ddtd[cnt] <- sdata$ddtd[cnt - 1] + sdata$value[cnt - 1] -
sdata$value[cnt]
}
else sdata$ddtd[cnt] <- 0
}
return(sdata)
Thank you,
Benjamin
2011 Mar 10
1
Sample or Probability Weights in LM4, NLME (and PLM) package
Dear all,
First, I would like to thank you for your immense work. My question is
about a frequent topic which I am not able to solve - even after hours
of search in the mailing lisy.
I would like to analyse random-effects (and fixed-effects)models of
longitudinal / panel data with sampling weights. I have an unbalanced
panel of different individuals in 5 years and income data as well as
their
2009 Jan 12
5
[PATCH 0/5] OCFS2 quota fixes
Hello,
the following series of patches fixes some issues with OCFS2 quotas.
The first patch modifies VFS quota locking, the next patch uses the
fact to simplify OCFS2 quota locking and solves a few deadlock issues.
The third and the fourth patches fix another possible deadlocks in OCFS2
quota code and the last patch is a minor cleanup.
Honza
2012 Mar 08
17
kernel BUG at fs/btrfs/delayed-inode.c:1466!
Hi,
this shown up today. I had to do a hard reboot as graceful hanged on sync().
------------[ cut here ]------------
kernel BUG at fs/btrfs/delayed-inode.c:1466!
invalid opcode: 0000 [#1] SMP
CPU 10
Modules linked in: btrfs zlib_deflate lzo_compress ipmi_devintf
autofs4 be2iscsi iscsi_boot_sysfs ib_iser rdma_cm ib_cm iw_cm ib_sa
ib_mad ib_addr iscsi_tcp bnx2i cnic uio ipv6 cxgb3i libcxgbi
2004 Aug 19
1
sample selection problem, inverse mills ratio (Heckman, Lewbel, ...)
-----Ursprüngliche Nachricht-----
Von: Wildi Marc, wia
Gesendet: Mittwoch, 18. August 2004 10:11
An: r-help@lists.R-project.org
Betreff:
Hi
Does anybody know from an R-package devoted to sample selection problems (Heckman's lambda, Lewbel, ...)?
Thanks and best regards
Marc Wildi
[[alternative HTML version deleted]]
2011 May 13
2
More effective calculation for loop
I am getting confused in how to use R effectively. Below is the example that I
would like to optimize, which is basically a loop. In its current version it
takes about 20 seconds to run. I have looked at the apply function and but
didn't seem to get it to work. I am sure this is relatively easy to show me a
better version for someone who has done this before. For some reason I seem to
2011 Jun 10
6
[PATCH v2 0/6] btrfs: generic readeahead interface
This series introduces a generic readahead interface for btrfs trees.
The intention is to use it to speed up scrub in a first run, but balance
is another hot candidate. In general, every tree walk could be accompanied
by a readahead. Deletion of large files comes to mind, where the fetching
of the csums takes most of the time.
Also the initial build-ups of free-space-caches and
2002 Sep 03
2
[patch] for rsync
To Whom It May Concern:
Below is a patch, that I have used to eliminate the unexplained
errors in the rsync program. I was able to trace the problem to
the order in which the sigchld_handler and wait_process routines
were executed. If sigchld_handler executes first it retrieves
the status that wait_process needs to indicate proper rsync
termination. The code below allows the sigchld_handler to
2009 Nov 15
2
resampling problem counting number of means above a specific value
I am trying to modify some code from Good 2005.
I am trying to resample the mean of 8 values and then count how many
times the resampled mean is greater than 10. But my count of means
above 10 is coming out as zero, which I know isn't correct.
I would appreciate it if someone could look at the code below and tell
me what I am doing wrong.
Many thanks,
Graham
> LL<-
2006 May 12
2
Problem regarding accessing attributes from object...
Hi,
I have an object (@cnt).
Now when I am calling "@cnt.inspect" on object it gives me output as
follows:-
----output----
[#"3"}>]
-----------
Now in aboove output the number between double quotes (3) which is of my
interest & I want to display it. How to do that?
Actually this is my method:-
====================================
class Tagging < ActiveRecord::Base
2010 May 26
1
[PATCH 1/1] staging: hv: Fix race condition on IC channel initialization (modified)
From: Haiyang Zhang <haiyangz at microsoft.com>
Subject: [PATCH] staging: hv: Fix race condition on IC channel initialization
There is a possible race condition when hv_utils starts to load immediately
after hv_vmbus is loading - null pointer error could happen.
This patch added an event waiting to ensure all channels are ready before
vmbus_init() returns. So another module won't have
2010 May 26
1
[PATCH 1/1] staging: hv: Fix race condition on IC channel initialization (modified)
From: Haiyang Zhang <haiyangz at microsoft.com>
Subject: [PATCH] staging: hv: Fix race condition on IC channel initialization
There is a possible race condition when hv_utils starts to load immediately
after hv_vmbus is loading - null pointer error could happen.
This patch added an event waiting to ensure all channels are ready before
vmbus_init() returns. So another module won't have
2013 Oct 25
8
[PATCH] btrfs: add framework to read fs info from btrfs-control
This adds ioctl BTRFS_IOC_GET_FSIDS which reads the fs
info through the btrfs-control
Signed-off-by: Anand Jain <anand.jain@oracle.com>
---
fs/btrfs/super.c | 47 ++++++++++++++++++++++++++++++++++++++-----
fs/btrfs/volumes.c | 33 ++++++++++++++++++++++++++++++
fs/btrfs/volumes.h | 2 +
include/uapi/linux/btrfs.h | 19 +++++++++++++++++
4 files changed,
2015 Feb 05
5
[LLVMdev] RFC: Recursive inlining
Hi Hal,
> As we had briefly mentioned on IRC, one way of forming this 'stack', and
its associated 'cnt' variable, is to use dynamic stack allocation.
I hadn't really reached a decision on the mechanics yet. However, your
suggestion while it can work within the current abilities of the IR, has
the disadvantage that it is using an extra stack slot for the link pointer.
I