Displaying 20 results from an estimated 1000 matches similar to: "How to change time zones?"
2005 Jan 26
2
reshape (a better way)
Hi,
I am using the NLSY79 data (longitudinal data from the Bureau of labour
stats in the US). The extractor exctracts this data in a "wide" format and
I need to reshape it into a long format.
What I am doing right now is to do it in chuncks for each and evry
variable that is varying and then I merge the data together. This is
taking a long time. my question is:
How do I specify that
2006 Aug 26
1
problems with loop
Dear all,
I am trying to evaluate the optimisation behaviour of a function. Originally
I have optimised a model with real data and got a set of parameters. Now I
am creating simulated data sets based on these estimates. With these
simulations I am estimating the parameters again to see how variable the
estimation is. To this end I have written a loop which should generate a new
simulated data
2006 Mar 07
4
POSIX time zone codes
The manual entry for as.POSIX says this about time zone codes...
Usage
as.POSIXct(x, tz = "")
tz
A timezone specification to be used for the conversion...
but it fails to mention what these "specifications" are. So far, I
have tried...
as.POSIX(x, tz="UTC") ... works, gives UTC times
as.POSIX(x, tz="UTC") ... works, gives EST times
as.POSIX(x,
2007 Jan 19
4
Newbie question: Statistical functions (e.g., mean, sd) in a "transform" statement?
Greetings listeRs -
Given a data frame such as
times
time1 time2 time3 time4
1 70.408543 48.92378 7.399605 95.93050
2 17.231940 27.48530 82.962916 10.20619
3 20.279220 10.33575 66.209290 30.71846
4 NA 53.31993 12.398237 35.65782
5 9.295965 NA 48.929201 NA
6 63.966518 42.16304 1.777342 NA
one can use "transform" to
2006 Mar 08
0
survival
Dear R-helpers,
We marked 6000 leaves from 5 SPECIES - 10 individuals/species - in two
different TREATMENTs: a control and a dry-plot from which 50% of
incoming precipitation was excluded. We followed those leaves for 42
months and noted the presence and absence at each visit. I then carried
out a Cox Harzard model to see differences in leaf mortality between
parcels and among species over time:
2004 Jan 11
1
strange behaviour when converting from char to POSIX (PR#6427)
On Sun, 11 Jan 2004, Dirk Eddelbuettel wrote:
> On Fri, Jan 09, 2004 at 06:01:27PM +0100, christoph.schmutz@meteoschweiz.ch wrote:
> > Full_Name: Christoph Schmutz, MeteoSchweiz, Switzerland
> > Version: R1.7.1, R1.8.1
> > OS: windows2000, solaris sunOS 5.8
> > Submission from: (NULL) (141.249.133.6)
> >
> >
> >
> > I'm not sure if I
2010 Jul 16
5
Randomly Dropping Audio / CTD
Now that 1.2 is out, will the issue of randomly dropping audio finally be addressed? Personally, I'm ignoring the stable series until this problem is identified and fixed. I understand that someone is working of revamping OpenAL support in WINE so when will users likely see the fruit of this revamp? This issue of randomly dropping audio with the application then CTD is extremely important.
2007 Dec 23
3
How to remove some rows from a data.frame
Hello list,
I have a data frame M like:
BAC chr pos s1 s2
RP11-80G24 1 77465510 -1 0
RP11-198H14 1 78696291 -1 0
RP11-267M21 1 79681704 -1 0
RP11-89A19 1 80950808 -1 0
RP11-6B16 1 82255496 -1 0
RP11-210E16 1 228801510 0 -1
RP11-155C15 1 230957584 0 -1
RP11-210F8 1
2007 May 14
3
x axis problems
I have been searching for the R manual, unable to solve my problem.
Questions
1) How can I put the x axis at the top of the plot?
2) I am plotting data from a CTD. I want to add series sal, obs and fluo
at the same plot by using points(sal,deepth) ets. The data have
different values so I want to use multiple x axis (4) with different
scaling. How can I do that?
2006 Nov 03
4
read file problem
R-help,
I have the following file I want to import to R (some lines
removed)
Calibrated CTD data for station:00280001
Calibrated:23/8 2001, Salinity Unsmoothed, Fluorescence Uncalibrated
Maximum observed depth: 36 m
QUAL has one digit for each of pressure, temp., sal. and fluor.
QUAL=1:Uncal., QUAL=2:OK, QUAL=6:Interp., QUAL=9:No data
2007 Feb 08
5
remove component from list or data frame
Sorry to ask such a simple question, but I can't find the answer after
extensive searching the docs and the web.
How do you remove a component from a list? For example say you have:
lst<-c(5,6,7,8,9)
How do you remove, for example, the third component in the list?
lst[[3]]]<-NULL generates an error: "Error: more elements supplied
than there are to replace"
Also,
2012 Aug 24
1
Vpopmail Dynamic Authentication Module
Hello,
We currently use qmail with vpopmail for e-mail and are looking to switch
from courier-imap to dovecot for IMAP on our RedHat EL 5 systems. Our goal
is to use the dovecot RPM supplied by RH (v1.0.7) if at all possible. We
can do this if we are able to dynamically load the vpopmail auth module.
The wiki (http://wiki.dovecot.org/CompilingSource) notes that this should
be possible:
2007 Oct 12
1
Differencing data by groups
Colleagues,
I am analyzing data collected during oceanographic cruises. We have
conducted many cruises over the last decade. On each cruise we visit ~50
stations. At each station (termed EventNum)we lower an instrument that
measures depth, temperature, salinity and oxygen every few seconds as it is
lowered through the water. Data from all EventNums on all cruises are
stacked, generating a data
2009 Aug 03
1
CTDB+GFS2+CMAN. clean_start="0" or clean_start="1"?
Hi everybody,
I have tested CTDB+GFS2+CMAN under Debian. It works good but I do not
understand some points.
It is possible to run the CTDB defining it under services section in
cluster.conf but running it on the second node shuts down the process at the
first one. My CTDB configuration implies 2 active-active nodes.
Does CTDB care if the node starts with clean_start="0" or
2007 Oct 08
2
sort time
Hello, I have got the following problem:
> times <- c("02.07.2007", "03.07.2007","03.09.2007", "04.07.2007","05.07.2007")
> mode(times)
[1] "numeric"
> tim <- as.character(times)
> mode(tim)
[1] "character"
> sort(times)
[1] "02.07.2007" "03.07.2007" "03.09.2007"
2005 Oct 11
2
non-zero sequence of numbers
Can anyone think of a way to create a pretty() sequence that excludes
zero? Or a way to remove the zero from a sequence after using pretty()?
Thanks,
- Jason
Jason Horn
Boston University Department of Biology
5 Cumington Street Boston, MA 02215
jhorn@bu.edu
office: 617 353 6987
cell: 401 588 2766
[[alternative HTML version deleted]]
2008 Sep 27
10
FW: logistic regression
Sorry.
Let me try again then.
I am trying to find "significant" predictors" from a list of about 44
independent variables. So I started with all 44 variables and ran
drop1(sep22lr, test="Chisq")... and then dropped the highest p value from
the run. Then I reran the drop1.
Model:
MIN_Mstocked ~ ORG_CODE + BECLBL08 + PEM_SScat + SOIL_MST_1 +
SOIL_NUTR + cE + cN +
2003 Oct 18
2
Oceanographic lattice plots?
R 1.8.0 on Windows XP Professional. A huge THANK YOU to the R Team for
this marvelous software.
I am making lattice plots of oceanographic data. The usual layout does not
conform to plotting conventions that marine scientists use when depth is
the independent variable. Under those conventions, plots are made with the
origin at the upper left, depth on the vertical axis (increasing as it
2005 Oct 10
2
R.app window size
Hi all,
This is a question for any of you who use R.app (OS X). Is there any
way to resize the quartz plot window from within R? I know that you
can resize the window by dragging the corner of the window, and fro
the preferences panel. But is there a way to specify the window size
from the console? I want to specify the size of the plot window from
inside an R function.
Also a
2005 Oct 06
1
circular statistics plotting
Hi all,
I'm new to the list here, and I have what I think is a simple
question. Using the "circular" package, is there a way to plot the
mean and variance on top of a rose diagram or other plot of the data?
Thanks in advance...
- Jason
Jason Horn
Boston University Department of Biology
5 Cumington Street Boston, MA 02215
jhorn@bu.edu
office: 617 353 6987
cell: 401 588