Displaying 20 results from an estimated 11000 matches similar to: "Referencing variable names rather than column numbers"
2007 Jul 05
1
cor() and cor.test() (PR#9781)
Hello,
I am trying to make a correlation matrix in R using cor() and also to get
the p-value for each correlation using cor.test(). I can't get these
commands to work. I'm getting errors like the following:
cor(Pollution, Wet.days)
Error in inherits(x, "data.frame") : Object "Wet.days" not found
cor("Pollution", "Wet.days")
Error in
2007 Jan 17
1
Coefficient of determination when intercept is zero
I am curious as to the "lm" calculation of R2 (multiple coefficient of
determination, I assume) when intercept is zero. I have 18 data points, two
independent variables:
First, a model with an intercept:
> mod0=lm(Div~Rain+Evap,data=test)
> summary(mod0)$r.squared
[1] 0.6257541
> cor(predict(mod0),test$Div)^2
[1] 0.6257541
The $r.squared and the result from "cor"
2010 Feb 25
2
proto and baseenv()
I understand why the following happens ($.proto delegates to get,
which ascends the parent hierarchy up to globalenv()), but I still
find it anti-intuitive:
> z <- 1
> y <- proto(a=2)
> y$z
[1] 1
Although this is well-documented behavior; wouldn't it uphold the
principle of least surprise to inherit instead from baseenv() or
emptyenv()? (See attached patch.)
Spurious
2006 Sep 23
1
variance-covariance structure of random effects in lme
Dear R users,
I have a question about the patterned variance-covariance structure for the random effects in linear mixed effect model.
I am reading section 4.2.2 of "Mixed-Effects Models in S and S-Plus" by Jose Pinheiro and Douglas Bates.
There is an example of defining a compound symmetry variance-covariance structure for the random effects in a
split-plot experiment on varieties of
2009 May 26
2
(OT) Does pearson correlation assume bivariate normality of the data?
Dear all,
The other day I was reading this post [1] that slightly surprised me:
"To reject the null of no correlation, an hypothsis test based on the
normal distribution. If normality is not the base assumption your
working from then p-values, significance tests and conf. intervals
dont mean much (the value of the coefficient is not reliable) " (BOB
SAMOHYL).
To me this implied that in
2000 Aug 28
2
Windows / RODBC / Accented characters
A disturbing behaviour of R: an import of data using RODBC library
(Windows 98, R 1.1.1) recognizes accented characters in variables
names but these can't be manipulated further. See below:
> library(Rodbc)
> ch<-odbcConnect("Paradox Files")
> pollut<-sqlFetch(ch,Pollutio)
> pollut
Mortalit? Densit? Pollution
1 82 600 110
2 97 960
2020 May 14
2
NUT control of vCenter & vServer?
Is anyone using NUT to signal/control vCenter and vServer (6.x) for
shutdown when batteries are getting low? Any recommendations?
We've found
https://4sysops.com/archives/startup-and-shutdown-a-vmware-cluster-with-powercli-and-powershell/
but
I'd prefer to do this from the master (which is running CentOS 8) and not
pollute it by installing PS on it.
thanks,
nomad
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2004 Dec 03
8
Why, why, why???
Help.
Why is it that I can call out from my GSBudgetone SIP phone but the
audio is "one-way'?
Why is it that when I call my asterisk phone number, I get a fast busy?
2006 Jun 20
9
secure downloads
Has anyone had any success with the mongrel_secure_download gem? I
keep getting "connection reset" errors.
--
Cheers,
Kevin
2005 Feb 22
13
TFTP Server
G'Day All,
Can anyone give me some direction in setting up the TFTP server on my
RadHat ES3 box?
I did quite a bit of reading, but I think I am more unsure now than
before. I found the information nebulous. TFTP is already installed. I
am trying to determine where the root directory for the tftp services is
located so I can copy the CISCO 7960 firmware files onto it.
Thanks.... Ferg
2009 May 03
2
[PATCH] ocfs2: Don't print error when listing too many xattrs.
Currently, when listing xattrs, kernel define XATTR_LIST_MAX as 65536
in include/linux/limits.h, so it can't handle too many xattrs.
But with ocfs2 xattr tree, we actually have no limit for the number.
And it will pollute the message with something like this when listing.
(27738,0):ocfs2_iterate_xattr_buckets:3158 ERROR: status = -34
(27738,0):ocfs2_xattr_tree_list_index_block:3264 ERROR:
2007 Sep 24
2
Q: how to collect user/group-names
Hi
Sorry if it's not 100% appropriate for this list, cannot think of better
place to find people with lots of know-how from Unix and Windows.
I'm currently working on replacing EMC's Celerra file servers by Linux/Samba.
The SID to UID/GID mapping table on Celerra is very large, ~50'000 entries
and I don't want to pollute my LDAP server with all this (using winbind with
LDAP
2005 Jan 11
6
Installing * on fedora 3
G'Day List,
Can someone help me out a bit please.
I just installed Fedora Core 3 on a Dell Power Edge 400 SC and am trying
to install *
I am following
http://www.voip-info.org/wiki-Asterisk+Step-by-step+Installation
After running:
cd /usr/src/asterisk
make clean
make
make install
make samples
The instructions says:
Configuring Asterisk
- Login to your server as user
2005 Feb 19
2
This is NUTS!!SOLVED
Thanks everyone for your feedback, especially Mark. I now have the ALL
the files I need. My order still stands for the $8.00 product from CISCO
but the CP7960 dealer sent me all the files.
Now I will move on to completeing the setup of the TFTP server. Thanks
again
-----Original Message-----
From: Michael Loftis [mailto:mloftis@wgops.com]
Sent: Friday, February 18, 2005 7:51 PM
To:
2006 Apr 19
8
Win32 Gem Dependencies
Yeah I just noticed that the latest mongrel gem for win32 doesn''t have
the proper dependency for ''daemons''. This of course causes the require
to fail. Any chance at getting this fixed for future gems? :)
Thanks
Josh Ferguson
2017 Oct 27
4
Infinite loops with no side effects
On Fri, Oct 27, 2017 at 1:08 PM, Hal Finkel <hfinkel at anl.gov> wrote:
> On 10/27/2017 02:51 PM, Reid Kleckner wrote:
>
> Personally, I don't like the side effect intrinsic.
>
>
> Understood. I also don't like the fact that it will clutter the IR in many
> cases.
>
> It will pollute all the IR generated by non-C frontends. What most of
> these
2004 Dec 02
6
Restarting *
G'Day All
What do I type at the command line to stop and start * on a RedHat ES3
box?
Thanks
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2004 Mar 22
3
Rsync killed my server
I have the following as a line in a script kicked off from cron:
sudo rsync -e ssh -avz /Times_QPS/ 192.168.22.72:/Times_QPS/ --eahfs
It logs the output to a log file, however rsync caused the log file to go to an 80gb file and fill up my disk because it threw a mental when a file it went to sync was no longer there!
Is there some way to get the sync to ignore errors?
-Jason
2007 Jun 12
1
Problems with Vista, R 2.5.0 and function save
Hi everyone,
I want to make use of the save function but it did not work.
I'm using vista and R 2.5.0, winzip is installed too.
Here's the code (from example ?save):
> x <- runif(20)
> y <- list(a = 1, b = TRUE, c = "oops")
> save(x, y, file = "xy.Rdata")
Fehler in gzfile(file, "wb") : kann Verbindung nicht ?ffnen
Zus?tzlich:
2012 Nov 30
2
Possible repo polllution
Hi,
I've just been checking my local copy of the CentOS repos. I found
200+ i386/i686 packages in both the updates/5/RPMS and
updates/6/Packages directories.
I checked with my rsync site ( ftp.heanet.ie ) and the equivalent UK
site ( ftp.mirrorservice.org ) and they both carried these packages
also.
Is this a case a repo pollution, it can't be necessary to have i386
packages in