Displaying 20 results from an estimated 700 matches similar to: "help with multivariate analysis"
2004 May 21
2
bars with sd
I need some help for a curious question of a friend of mine.
She usually does some experiments (3-5 repeats for each exp) and then she
calculates mean and standard deviation.
In microsoft excel she writes something like the following
sample mean sd
a 1.25 0.35
b 2.65 0.65
c 3.45 0.50
She can do a vertical barplot graph just giving mean value and specifying
the
2009 Mar 25
1
mvtnorm package
Dear all,
I would like to ask information about the package mvtnorm in R.
It is very useful for me the "qmvnorm" comand, but I see that it can
compute only quantile for equicoordinate. Is it possible to have a
curve (or a set of values) if we don't want equicoordinates?
Thank you
Best regards
Antonio.
--
Antonio Lucadamo,
Dipartimento di Scienze Economiche e Metodi Quantitativi
2009 May 04
1
ellipse
Dear all,
I'm using the ellipse package and I would like to verify if the
confidence region that I
build with this package can be equivalent to an Union Intersection
Test. I used different
value for the t-statistic but I can not find the right equivalence.
Does someone know how to choose the right value?
Thanks a lot.
Antonio
--
Antonio Lucadamo,
Dipartimento di Scienze Economiche e
2011 Jul 01
3
Multilevel Survival Analysis - Cox PH Model
Hello all, thanks for your time and patience.
I'm looking for a method in R to analyse the following data:
Time to waking after anaesthetic for medical procedures repeated on the same
individual.
> str(mysurv)
labelled [1:740, 1:2] 20 20 15 20 30+ 40+ 50 30 15 10 ...
- attr(*, "dimnames")=List of 2
..$ : NULL
..$ : chr [1:2] "time" "status"
-
2010 Jun 12
1
generating ordered, random decimal fractions
Greetings
How do I do this in R? Checking the Cran site produces a bewildering array
of packages that I can't seem to find to load. Surely the main program has
this function?
Cheers
Kurt
***************************************************************
Kurt Lewis Helf, Ph.D.
Invertebrate Ecologist
National Park Service
Cumberland Piedmont Network
P.O. Box 8
Mammoth Cave, KY 42259
Ph:
2011 Jan 28
4
Months in alphabetical order rather than chronological order in graph
Greetings
Though I have months in chronological order in my data table, the data
were sampled every other month (i.e., February, April, June, August,
October, December), every time I try to plot them (on the x-axis) they are
plotted in alphabetical order. What am I missing?
Cheers
Kurt
***************************************************************
Kurt Lewis Helf, Ph.D.
Ecologist
EEO
2011 Jan 18
2
substituting level for NA in factor column
Greetings
I have a bunch of NAs in a column of categorical variables designating
the size classes (e.g., smallest to largest: 1,2,3,4) of cave crickets.
I'd like to substitute "U" (for unknown) for the NAs. Can anyone give me
an idea how to do this? Thanks in advance.
Cheers
Kurt
***************************************************************
Kurt Lewis Helf, Ph.D.
Ecologist
2011 Jan 05
2
OT: Reducing pdf file size
Greetings
Does anyone have any suggestions for reducing pdf file size,
particularly pdfs containing photos, without sacrificing quality? Thanks
for any tips in advance.
Cheers
Kurt
***************************************************************
Kurt Lewis Helf, Ph.D.
Ecologist
EEO Counselor
National Park Service
Cumberland Piedmont Network
P.O. Box 8
Mammoth Cave, KY 42259
Ph: 270-758-2163
2010 Oct 22
2
Confusing error statement
Greetings
Using the following command I've been trying to subset a dataframe of
counts of an organism to compute the sizes of groups for use as a
predictor:
Hs.patches <- as.data.frame(with(Hs.long,
table(Cave,Year,Month,Region,Plot,)))
I am getting the following error message that I do not understand:
ERROR: argument is missing, with no default
Can anyone shed light on this
2010 Oct 18
3
remove numbers from string of characters
Greetings
I want to remove numbers from a string of characters that identify
sites so that I can merge two data frames. For example, a site in one
frame is called "001a Frozen Niagara Entrance" whereas the same site in
the other data frame is called "Frozen Niagara Entrance". It seems to me
the easiest thing to do would be to remove the numbers from the first data
2010 Sep 21
3
R-help Digest, Vol 91, Issue 21
All
Is there a script in R equivalent to the "if then" transforms one can
perform in Systat? For example, I want to create a "Treatment" column
coded either 1 or 2 for twelve field sites in a large data set. Ideally,
I'd be able to tell R to code sites a-f as 1 and sites g-l as 2.
Cheers
Kurt
***************************************************************
Kurt Lewis
2003 Jan 15
4
Profile migration again
John H Terpstra jht@samba.org writes:
> You see the NTUser.DAT file is keyed to the user's SID and the Domain SID
> of the NT4 environment in which they were created. You need to either use
> the NT4 procedure as documented in the resource kit for migrating the
> profile, something that Microsoft only supports within the one domain
> anyhow, or else use the profile editting
2008 Aug 19
2
how to import from SPSS without shortening variable names
Hello,
as I import '.sav' files from SPSS, the variable names are shortened to
8 uppercase characters:
"sex_of_therapist" will become "SEX_OF_TH"
Is there a way around this? How can I retrieve the full names?
Greets from Southern Germany,
Timo Stolz
2017 Mar 14
3
Problems with replication and dns
Hello,
Thanks for accepting me on the list, I hope to learn and contribute
according to my knowledge.
My main dc is samba 4.4.5 on centos 7.
I am installing a secondary dc with samba 4.7 And had the following problems:
main dc:
samba-tool ntacl sysvolreset:
open: error=2 (No such file or directory)
ERROR(runtime): uncaught exception - (-1073741823, 'Undetermined error')
File
2006 Oct 05
11
Block comments in R?
Hello list,
Is there any way to perform a block comment in R? In C++, anything in
between a /* and */ is considered a comment, and it allows
programmers to comment out chunks of code for testing and debugging.
Is there such a feature in R?
Cheers,
Wee-Jin
2017 Mar 14
2
Problems with replication and dns
Hello,
Sorry for the few details.
rsync:
rsync -h -a -v /usr/local/samba/var/locks/sysvol/pragma.com.co/
root at server2:/usr/local/samba/var/locks/sysvol/pragma.com.co/
first dc smb.conf:
[global]
tls verify peer = no_check
ldap server require strong auth = no
netbios name = NEPTUNO
realm = PRAGMA.COM.CO
server services = s3fs, rpc, nbt, wrepl, ldap, cldap, kdc, drepl,
winbindd,
2010 Oct 13
1
strip month and year from MM/DD/YYYY format
Greetings
I'm having difficulty witht the strptime function. I can't seem to
figure a way to strip month (name) and year and create separate columns
from a column with MM/DD/YYYY formatted dates. Can anyone help?
Cheers
Kurt
***************************************************************
Kurt Lewis Helf, Ph.D.
Ecologist
EEO Counselor
National Park Service
Cumberland Piedmont Network
2012 Feb 13
0
Singling out observations
Greetings
I am attempting to plot observations of a cave aquatic invertebrate
dating from 1901-2004. I can come up with a nice lattice plot of the eight
sites from which I have data easily enough. However, I'd like to be able
to highlight the 0 observations on the plots, i.e., attempts to find it at
the site were unsuccessful. I'd like to be able to highlight these
observations
2010 Nov 10
1
Inserting Missing Data
Greetings
I'm attempting to insert missing data on the smallest size class of
cave cricket instars into a data frame. The data involve censusing
photoplots (plots) of roosting cave crickets in which we discern in four
instars or size classes. I need to insert data on size class one into a
data frame that already has data on size classes two through four. The
data can be merged by their
2011 Mar 16
0
generate bivariate or multivariate gamma distribution in R
Hi, there:
Is there any quick function to generate bivariate or multivariate gamma distribution?
Thanks.
Yulei