Displaying 20 results from an estimated 5000 matches similar to: "R 2.14.1 memory management under Windows"
2012 Oct 01
6
nlme: spatial autocorrelation on a sphere
I have spatial data on a sphere (the Earth) for which I would like to run an gls model assuming that the errors are autcorrelated, i.e. including a corSpatial correlation in the model specification.
In this case the distance metric should be calculated on the sphere, therefore metric = "euclidean" in (for example) corSpher would be incorrect.
I would be grateful for help on how to
2012 Mar 08
3
Packages 'effects' loads 'name' which conflicts with 'lme4'
Hi,
I would like to use the effect() function (actually a slightly modified version of it) on the output of the lmer() function in the lme4 package. But the effects package requires the nlme pacvkage, which is incompatible with lme4. Workaround?
______________________________________________
Professor Michael Kubovy
University of Virginia
Department of Psychology
for mail add: for FedEx or
2013 Oct 11
3
Gaussian Quadrature for arbitrary PDF
Hi all,
We know that Hermite polynomial is for
Gaussian, Laguerre polynomial for Exponential
distribution, Legendre polynomial for uniform
distribution, Jacobi polynomial for Beta distribution. Does anyone know
which kind of polynomial deals with the log-normal, Student抯 t, Inverse
gamma and Fisher抯 F distribution?
Thank you in advance!
David
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2012 Mar 19
1
diff(time) vs. difftime?
I just encountered another RTFM problem: With
diff(as.POSIXct(...), ...) I was unable to control the units of the
results. Examples:
> (d.d <- diff(as.POSIXct(c('2012-12-12', '2012-12-13'))))
Time difference of 1 days
> (d.h <- diff(as.POSIXct(c('2012-12-12 08:00', '2012-12-12 09:00'))))
Time difference of 1 hours
> (d.m <-
2014 Dec 15
2
Making iconv portable?
> On Dec 15, 2014, at 12:21 PM, Kurt Hornik <Kurt.Hornik at wu.ac.at> wrote:
>
>>>>>> Spencer Graves writes:
>
>> Hello, All:
>> What would it take to make ?iconv? portable?
>
>
>> I ask, because I want to convert accented characters to
>> vanilla ASCII, thereby converting, e.g., ?Ra?l? to ?Raul?, and
>> Milan
2014 Dec 15
1
Making iconv portable?
On Dec 15, 2014, at 1:37 PM, Spencer Graves <spencer.graves at prodsyse.com> wrote:
>
>
>> On Dec 15, 2014, at 10:13 AM, Simon Urbanek <simon.urbanek at r-project.org> wrote:
>>
>>>
>>> On Dec 15, 2014, at 12:21 PM, Kurt Hornik <Kurt.Hornik at wu.ac.at> wrote:
>>>
>>>>>>>> Spencer Graves writes:
2013 Feb 04
2
Wide character in print?
Hello:
I get "Wide character in print" from trying
read.xls("22_data.xls") in the gdata package, with "22_data.xls"
downloaded from "Varieties_Country_A-E.xls" at
"http://www.reinhartandrogoff.com/data/browse-by-topic/topics/7/":
> library(gdata)
> read.xls("22_data.xls")
Wide character in print at
2011 Nov 28
3
Rprofile.site
Dear All
I inserted a frequently used function (subroutine) right into my Rprofile.site which allows me to run it each time-works great. However, this approach is obviously suitable for a short function or a small number of functions. Instead of inserting the lines in Rprofile.site, is there a way to insert one line pointing to (fetching) the function in a local drive, similar to #include
2012 Jul 09
1
c(a, b) for POSIXct objects with tzone attributes?
Hello:
What is the recommended method for retaining the tzone attributes
when concatonating POSIXct objects?
> (d1 <- ISOdate(1970,1,1)) # Sets the tzone attribute = GMT
[1] "1970-01-01 12:00:00 GMT"
> (d1.2 <- c(d1, d1)) # c(..) strips the tzone attribute, displays in
the time zone of the operating system
[1] "1970-01-01 04:00:00 PST" "1970-01-01
2012 May 04
1
Rprofile.site under Windows 7?
Hello All:
I'm still unable to get Rprofile.site to set, e.g.,
options(max.print=222), as I did with previous versions of R.
I just found similar questions posed by Trevor Miles and Ross Bowden
with replies by Uwe Ligges and Duncan Murdoch.
In addition to the things I tried documented below, I also copied
Rprofile.site into "R_HOME/etc/i386" and
2012 May 20
4
write.xls
Hello, All:
The "writeFindFn2xls" function in the "sos" package tries to
write an Excel file with 3 sheets ('PackageSum2', 'findFn', 'call').
Unfortunately, it is often unable to do this because of configuration
problems that are not easy to fix. I've found 3 contributed packages
that provide facilities to write Excel files with
2012 Jan 03
3
An R interface to Model Building
Hello all,
To anyone who is interested, I'm trying to learn a bit more about
developing applications in R with user interfaces. I've been playing
around with gWidgets to develop a model building interface.
I'd appreciate any comments, suggestions, or guidance on how to better
structure my R code and organize the programming task. In addition,
any suggestions for features and
2010 Jun 16
2
Package development process?
Hello, All:
What thoughts might you have on "The R Software Package
Development Process"?
I'm looking for ideas, materials, references, and / or
collaborators for an article on this topic to be submitted to the
Communications of the ACM. My limited experience with other languages
such as Matlab and Python suggests that R may be fairly unique with CRAN
and this
2012 Feb 29
1
Replace back slashes with forward slashes?
Hello, All:
What can people tell me about converting back slashes to forward
slashes in character strings?
Several years ago, Prof. Ripley provided a solution, which I lost
and have not been able to find.
Below please find a function to do this. I do not find this very
satisfactory, however, because it uses "scan" and therefore operates on
an input not a
2012 Feb 06
2
R-RApache to develop Knowledge Base
Hi all,
I need your opinion about using R-Rapache to build a knowlegde base to
bioinformatics field.
I have copious amount of genotype information (some few million records)
and would like to store it in MySQL database. Then, using RMySQL connector
I would like to use it for further analysis using R over a web interface.
The web interface which I am thnking off, just does not serve the purose of
2011 Feb 05
1
Reading a specific file during "R CMD check"?
Hello, All:
How can I obtain the location of an example data file in a
package during "R CMD check"?
I want to include sample raw data files in a package and have
them read by a function in the package. It occurs to me to put such a
file in "\inst\rawdata" and have examples find the data using something
like "system.file('rawdata',
2012 Oct 03
4
Regarding licensing Terms
Hi,
I have developed one application using ggmap package.It is based on google
map.
I am a bit confused regarding its licensing terms.I want to know that can i
use it with my other applications.
Is it legal?
--
With Regards,
Narendra Pratap
Principal Research Developer
Hitech Robotic Systemz Ltd.
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2012 Feb 24
1
evaluating derivative matrices of spline functions
Hello,
I've noticed that SPLUS has a function for evaluating the derivative matrices of splines.
I've also noticed that there's a function in R for evaluating matrices from smooth.spline;
maybe someone knows if something has been written to evaluate matrices from 'smooth.basis'?
regards,
s
2011 Sep 27
1
M-Splines design matrix
Hi
Can any one inform me an r package used to fit Cubic M-splines or r functions used to have design and penalty matrices in fitting cubic M-splines please?
Thanks,
Tigist
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2011 Oct 03
1
Compact letter display for interaction effects
Hello,
I am interested in generating a compact letter display for the results
of Tukey HSD tests that contain interaction effects. The 'cld' method in
the 'multcomp' package seems only to work for main effects. Does such a
thing exist already? Thank you for any thoughts,
Josh
--
Joshua Caplan, PhD
Postdoctoral Associate
Department of Ecology, Evolution, and Natural Resources