Displaying 20 results from an estimated 900 matches similar to: "Your email message was blocked"
2010 May 06
2
Problem with install.packages(); getting out-of-date version.
I recently tried to install the latest version of spatstat, from CRAN,
using the install.packages() function. It proceeded to install version
1.17-5 of spatstat, although the current version is 1.18-4.
Checking the CRAN mirror that I used (New Zealand) via Firefox, I found
that version 1.18-4 is indeed present on CRAN. I was able to download
and install version 1.18-4 ``manually''
2010 Sep 16
8
function help?
Hi all,
I am writing a function (fun.R), but I dont know how to code the
function so that the Help Text will be shown up when one types ?fun (of
course, after he loads it up). Anyone has any advice for me how to do that?
Thanks,
D.
2009 Sep 05
2
Combining expressions.
I am trying to construct a function to which I pass an expression as an argument.
>From that expression I want to create a somewhat more complicated expression
and then differentiate it using D() or deriv().
To give a simple example, I'd like to be able to do something like
e1 <- expression(x^2 + y^2)
e2 <- some.magic(e1,"n")
or maybe e2 <- some.magic(e1,expression(n))
2007 May 21
3
quartz() on MAC OSX
I am (desperately) trying to get used to using a Mac here at my new
location. (Why *anyone* would ever use anything other than Linux, except
under duress as I am, totally escapes me, but that's another story.)
Fortunately much of the Mac OSX is actually Unix, so a civilized person can
manage to carry on ... But there are some things. (Like this <expletive
deleted> mailer ... But
2000 Aug 31
3
help with data import/export
how can I import/export data from ms excel?
also is there a way to import/export data of the hdf format?
is there a way to import/export hdf format for ms excel as well?
thank you very much in advance.
/js
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2009 Nov 18
3
Re ading multiple Excel 2007 files with a loop
I have several hundred Excel 2007 data files in a folder. I would like to
read every file in a single given folder using a loop.
I have searched the FAQ, the forum archives here, other or older R boards
and the R Import / Export documentation, and have asked some very
knowledgeable R users without learning of a solution. I hope someone here
can help.
I understand that the most common
2010 Jan 18
1
how to install spatstat
Hi,
I tried to install spatstat using:
install.packages("spatstat", dependencies = TRUE, lib =
"./R/i486-pc-linux-gnu-library/2.8")
but got the following msg:
--- Please select a CRAN mirror for use in this session ---
<here i selected one mirror, and tried several mirrors)
Loading Tcl/Tk interface ... done
Warning message:
In install.packages("spatstat",
2010 Jan 30
1
MA parameter in R vs. Minitab
Dear R People:
I ran an ARIMA(1,0,1) on a particular series in R and got a negative
MA(1) estimate.
Then I ran an ARIMA(1,0,1) on the same series in Minitab and got a
positive MA(1) estimate.
The values are about -0.69 and 0.70.
Does R show the opposite value, please?
Thanks,
Erin
--
Erin Hodgess
Associate Professor
Department of Computer and Mathematical Sciences
University of Houston -
2008 Oct 07
2
fitting a curve to data points
Hello all. This is likely to be a silly question, but I have a set of
data points and I want to fit a curve to it, like this:
http://www.igc.usp.br/pessoais/guano/temp/curve.png.
which function should I use?
many thanks
Carlos
--
+-----------------------------------------------------------+
Carlos Henrique Grohmann - Guano
Geologist M.Sc - Doctorate Student at IGc-USP -
2008 Dec 17
1
append lines to a created file
hi,
I try to append a line to a file with;
writeLines("xxx", con = "file.txt, sep = "\n")
but it always overwrites the existing content.
How can I "change" the "mode" of writeLines to append ("a") ?
2009 Mar 19
2
How to set R_PROFILE conditional on batch or interactive mode
I am running R 2.8.1 on SUSE Linux. I would like to be able to set
R_PROFILE to two different possibilities. One when R is called by R CMD
BATCH and another any other time. Is this possible?
Mark Lyman, Statistician
Engineering Systems & Integration, ATK
2009 May 13
2
(no subject)
Dear R users,
Does anyone know how to graph the function below?
sqrt(2)Γ(n/2)/[sqrt(n − 1)Γ((n − 1)/2]
Please help.
Debbie
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2009 May 24
1
about strauss process
i have trouble in using spatstat package.
i want to simulate a community under the Strauss process,which has a parameter gamma that controls interaction strength between points,and Strauss process is defined only for 0 ¡Ügamma ¡Ü 1 and is a model for inhibition between points.
my problem is that in my data, many species's estimated gamma is larger than one.so if i still wanna simulate
2009 Nov 01
1
problems whit seasonal ARIMA
Hello,
I have daily wind speed data and need to fit seasonal ARIMA model, problem
is that my period is 365. But when I use arima(...) function, with period
365, I?m getting error message: ?Error in makeARIMA(trarma[[1]],
trarma[[2]], Delta, kappa) : maximum supported lag is 350?. Can someone
help me with this problem?
Thank you
Sincerely yours,
Laura Saltyte
2009 Nov 30
1
how to solve a problem in R this problem?can someone help me
Census from 1990 california in USA. It?s a data frame with data from 20640
zones from Calif?rnia. Zones are chosen as being geograficly near, wich one
with 1500 persons (mean).
For each zone are provided several informations in the colums from data
frame:
- longitude e latitude from the geografic centre
- median age of houses in the zone (housingMedianAge)
- total number of houses in the na zone
2010 Feb 05
1
unique function works funny
I have 3 nested functions, the core function goes like this:
listx<-function(x,tox)
{
xt=table(x)
wa=sort(unique(x,fromLast=FALSE))
print(xt)
print(wa)
......
return(kk)
}
listx get called in functionB, and functionB get called in functionC.
When I test functionB, the listx function works just fine. When I call
functionB from functionC, strange thing happened:
My result for xt:
0.07 0.17
2010 Mar 11
1
Calculate mean slope of a function
Hallo,
hope you can help me with this question:
I have calculated a function using f<-smooth.spline(data) and
approxfun(f). Now I want to calculate the mean slope of the resulting
function.
Haven't found the right R command yet, maybe you can give me a hint.
Thanx, Antje
2010 Mar 08
2
variance of discrete uniform distribution
Hi all,
I am REALLY confused with the variance right now.
for a discrete uniform distribution on [1,12]
the mean is (1+12)/2=6.5
which is ok.
y=1:12
mean(y)
then var(y)
gives me 13
1- on http://en.wikipedia.org/wiki/Uniform_distribution_%28discrete%29 wiki
the variance is (12^2-1)/12=143/12
2-
2010 Mar 04
1
Setting graphical parameters
Hi guys... I have problem with this excersise...
Consider the pressure data frame again.
(a) Plot pressure against temperature, and use the following
command to pass a curve through these data:
> curve((0.168 + 0.007*x)?(20/3), from=0, to=400, add=TRUE)
(b) Now, apply the power transformation y3/20 to the pressure data values.
Plot these transformed values against temperature. Is a linear
2008 Jun 18
1
Pointwise Confidence Bounds on Logistic Regression
Hi all. I hope I have my terminology right here...
For a simple lm, one can add ?pointwise confidence bounds? to a fitted line
using something like
>predict(results.lm, newdata = something, interval = "confidence")
(I'm following DAAG page 154-155 for this)
I would like to do the same thing for a glm of the logistic regression type,
for instance, the example in MASS pg