Displaying 20 results from an estimated 200 matches similar to: "how to interpolate multidimensional (3D) spatial data"
2008 Mar 18
1
odbcQuery , memory.size
Dear R cracks
I am trying to fetch 38 Tables from 38 ESRI Geodatabases through an ODBC
connection.
I stored the 38 channels in a list and the 38 tablenames in an other list.
With a
for(i in 1:38) .... sqlFetch(....) I try to read the tables into a third
list. But always after a certain amount of rounds (mostly 16) i get
Fehler in odbcQuery(channel, query, rows_at_time) :
Calloc konnte
2003 Nov 20
0
Problem with public shares
Hello!
I'm running Samba 3.0.0 with Openldap 2.1.22.
Samba is my PDC and I'm using ldapsam as backend. Nearly everythings
works, but I have a public share [tmp] which should be accessible
without authentication from all clients even if they are no domain
members. I think, my share definition is o.k. in smb.conf but if I
click on the Samba server symbol on a client (Microsoft Windows
2006 Jul 28
0
Non-metric Multidimensional Scaling in R (Tobias Verbeke)
The vegan package has non-metric multidimensional scaling in addition to a
variety of other ordination techniques.
Regards,
Helen Mills Poulos
Yale University
2011 Oct 05
2
cuhre usage ?? multidimensional integration
my=function(x){
len=1
for(i in 1:len){
y[i]=x[i]
}
g=1
w=NULL
t=NULL
for(i in 1:len)w[i]=x[i+len]
for(i in 1:len)t[i]=x[i+2*len]
for(i in 1:len)g=g*dnorm(y[i])*dnorm(w[i])*dnorm(z[i])
return(g)
}
cuhre(6,1,my,rep(-100,6),rep(100,6))
Error in crff(match.call(), integrand, "cuhre", libargs, ...) :
Additional argument not expected in the integrand function
function change to
2007 Nov 05
0
multidimensional integration with adapt
Hello,
I apologize for eventual double-posting.
I am trying to integrate a 2-dimensional function that already calls the
function adapt. More precisely, I am calling
adapt(2,lower=c(-100,-100),upper=c(100,100),functn=function(s){1-exp(-50*Unc
enteredGauss(c(-10,10,-10,10),60,s)})
where UncenteredGauss is given by the following code in R:
2002 Dec 18
0
Multidimensional quadrature using "integrate"
Hi:
I was wondering if someone could give me some examples of how to use
the "integrate" function to perform multi-dimensional quadrature? I
have a posterior density (up to a constant), for which I'd like to
evaluate the normalizing constant.
thanks for any help,
Ravi.
2007 May 18
1
initializing a multidimensional array..
i have a plain old array initialized like this:
@columns = Array.new
this array needs to be an array of arrays..
how do i tell ruby that this is an array of arrays?
what i want to do is something like this:
@columns[i] << ''some value''
where is is determined programattically..
obviously, ruby won''t let me do this since @columns[i] is not an
array, but an
2010 Jun 10
1
importing multidimensional matrix from MATLAB
Hi,
Suppose I have a matrix of size 256x14x32 in MATLAB. I want to import
that into R. I used readMat and then do.call. But the variable is
stored as an array as its done in R. However, I want to define a
variable W=array(0,c(256,14,32)) in R and read the multidimensional
matlab variable into W. I am not able to do this in R. Please, could
you help ?
Thanks
Gopi
[[alternative HTML version
2009 Jun 10
1
Analisys in Multidimensional contingency tables
Dear R-list,
Hi everyone, Im trying to make an analysis of multidimensional contingency
tables using R. I' working with the Agresti example where you have the
data from 3 categories. The thing is how can I do the analisys using the
G2 statistics. Somebody can send me an Idea?
I attach the program where you can find the data.
Best Regards,
> prob1<-
2007 May 20
0
Testing multidimensional random numbers?
Dear Statistics-Experts,
Assume you have given a new and untested pseudo-random number
generator (prng) and you want to test if it "works". The distribution
function (cdf) from which the prng is supposed to sample is known.
Further, you are given some finite (large) sample from the prng. If
the sample is one-dimensional, we can apply the cdf to it and test
the sample for being
2005 May 12
0
Multidimensional Scaling with pairwise Fst
I want to create a MDS plot with pairwise Fst values derived from a
population genetics project. My Fst values are in a tab-delimited file
(lower triangle only) that I view with Excel. When I use the cmdscale
command I get the message:
Error in cmdscale(x) : Distances must be result of dist or a square
matrix
In addition: Warning messages:
1: "^" not meaningful for factors in:
2012 Oct 23
0
multidimensional Array or Hash with group_by 'created_at'
Hello,
i want to create a multidimensional Array or Hash with group_by
''created_at''.
3 dimensions needed:
myArray[week][day][data]
currently i only created it with 2 dimesions:
#model
def self.group_per_day
all.group_by{|t| t.created_at.strftime("%d. %B, %Y")}.sort #"%U" for
Weeks
end
#controller
@pdf_activities = Activity.group_per_day
#view
2006 Feb 16
0
Hybrid Multidimensional Scaling
Hi all,
Does anyone know if there's R code available for doing Hybrid Multidimensional Scaling (or Semi-Strong HMDS, e.g. Belbin 1991 J. Veg. Sci. 2:491-)? I've found only commercial software that does it.
Thanks,
Anni
2001 Apr 02
1
Multidimensional Scaling
Hi
Does anyone know if there's a package I can use to do Multidimensional
scaling ?
Thank's
EJ
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2007 Aug 15
1
Function for reading in multidimensional tables / data.frames
Hi,
I was wondering if there is already some function
implemented into R that reads in tables with more than
2 dimensions. There is probably something neat out
there...
Thanks,
Werner
Wissenswertes zum Thema PC, Zubeh?r oder Programme. BE A BETTER INTERNET-GURU! www.yahoo.de/clever
2002 Apr 23
0
Summary: Multidimensional scaling
I sent a query to R-Help about the availability of nonmetric
multidimensional scaling (MDS) algorithms in R. I would like to thank
Tony Rossini, Jonathan Baron, Sundar Dorai-Raj, and Brian Ripley for
helpful replies. The gist of the replies is that isoMDS in the MASS
library provides Kruskal's method for nonmetric MDS, sammon in the MASS
library provides Sammon's nonlinear mapping method
2003 Feb 27
0
[despammed] RE: multidimensional function fitting
If something like the second-order function does not fit your data well, it
may well be that the data do not admit a simple structure that you can
easily code in C.
If you expect the structure of the function to be simple, tell gam() so by
specifying a small dimensional basis (via the k= argument in s()). This
will probably ease the computational burden.
HTH,
Andy
> -----Original
2003 Feb 28
0
[despammed] RE: multidimensional function fitting
You can use R objects, such as the return from gam, and the
predict.gam function, from C. See the R extensions manual.
Reid Huntsinger
-----Original Message-----
From: RenE J.V. Bertin [mailto:rjvbertin at despammed.com]
Sent: Thursday, February 27, 2003 3:42 PM
To: Wiener, Matthew
Cc: r-help at stat.math.ethz.ch
Subject: Re: [despammed] RE: [R] multidimensional function fitting
On Thu, 27
2003 Dec 03
1
multidimensional Fisher or Chi square test
Hello,
Is there a test for independence available based on a multidimensional
contingency table?
I've about 300 processes, and for each of them I get numbers for failures and
successes. I've two or more conditions under which I test these processes.
If I had just one process to test I could just perform a fisher or chisquare
test on a 2x2 contigency table, like this:
for one process:
2005 Jun 28
1
enhanced multidimensional scaling?
Dear R list
Would anyone be able to tell me whether it is possible to do "enhanced
multidimensional scaling" (enhanced MDS) in R? In other words, something that
goes beyond "cmdscale" by iteratively improving the fit between observed
dissimilarities and inter-object distances, using the KYST algorithm
(Kruskal, 1964).
I have found several implementations of non-metric MDS