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You can also perform an Eigenvalue decomposition of the covariance
matrix and see along which
directions the singularity occurs and how strong it is.
Consequences could be rescaling (or
Dear R Users
Suppose that we want to regress a certain autoregressive model using SVM. We have our data and also some fixed kernels in libSVM behinde e1071 in front. The question Where can weseverine.erhel@(protected) a �crit
> hello
>
> I work since a few time on R and i wanted to know how to obtain the Wald chi
> square value when you make a binary logistic regression. In fact i have thI have a data frame with three columns type (a factor with two
values "Monolithic " and "Compositional ") size (numeric) and states
(numeric). I want to create a plot where size goes on the x-axisHi
I have a dataset which has around 138 variables and 30 000 cases. I am
trying to calculate a mahalanobis distance matrix for them and my
procedure is like this
Suppose my data is stored in mymatHello
The set of messages below reports a successful build of 2.0.0 on AIX 5.2
using GCC 3.3.2
I 've been trying for a while now to build 2.1.0 and 2.1.1 and have been
unsuccessful. I 've tried
- Ghello
I work since a few time on R and i wanted to know how to obtain the Wald chi
square value when you make a binary logistic regression. In fact i have the z
value and the signification but is tHello
I plot with filled.contour and have this problem.
There is an area that I want to cover with angled
shading lines to represent NA in my data.
Very much appreciate help.
Thanks
Mark
pal <- Hi!
OK I 'm trying to select some "useful outliers " from
my dataset I defined 11 "treshold " values (1 for each
level of a variable (sampling site) as follows
tresholds <-function(x)
{
tapply(x mm$NI have a matrix r and a scalar d and I would like to apply the
following functions to each of its elements
1. if r < 0 no change
2. if 0 < r < d replace element by zero
3. if d < r replace ele
Hi
I 'd like to perform Dufrene-Legendre Indicator Species Analysis for
a multivariate regression tree. However I have problems with arguments
of duleg(veg class numitr 1000)function. How to obtain Hi all
In heatmap 's documentation it mentions that the output value is
actually an invisible list...how would one access this list?
Thanks
Jake
Dear R-helpers
I 'm trying to get xyplot to plot 2 y-axes. I looked at the examples
and googled around. This is how far I got so far.
test <-data.frame(a rnorm(100) b rnorm(100)*10 ind rep(1 10 10)Hi
I would like to get the coefficient of polynomial expansion. For example
(1+ x)^2 1 + 2x + x^2 and the coefficients are 1 2 and 1.
(1 + x + x^2)^3 1 + 3*x + 6*x^2 + 7*x^3 + 6*x^4 + 3*x^5 Hi everybody
I 'd like to know if there 's an easy way for extracting
outliers record from a dataset in order to perform
further analysis on them.
Thanks
Alessandro
Dear list
I would like to create histograms for up to three groups with
distincive colour/pattern in a trellis panel. However I have not
been able to find a way to do this. histogram does not seehi all
assume that one is doing a simulation. in each iteration one produces a
vector of results. this vectors length might change for each different
iteration. how can one construct a matrix that cohi all
are we able to combine column vectors of different lengths such that the
result appears in matrix form?
e.g.
a 1
b 1 3
d 1 4
then
z CBIND(a b d)
1 1 1
2 2
3 3
4
i stil want theHi Everyone
May I request for a small help while performing the regression analysis.
I would like to know is there any possibility of conducting the
regression for different data subsets (in the samHi all
When I tried to install package randomForest it gave out the following
error message
"
> install.packages( "randomForest " dependencies TRUE)
trying URL
'http //www.lmbe.seu.edu.cn/CRANHi Everybody
I am interested in estimating nested logit with latent classes at the
lower level.
I have seen the codes for conditional logit and latent class analysis
but I haven�t found anything abHi
I was a user of the searchable Mail Archives which you have
linked from somewhere on your homepage.
http //maths.newcastle.edu.au/~rking/R/
This link is out of order. I know there is a search atLe mail envoye a 20stephane.dumas@(protected) le lundi 08 ao�t contient un virus
Hi
I am trying to use this function. Can anyone show me how I would input
the following example?
Chi-Squared (40-30)^2 + (20-30)^2 + (30-30)^2
30 30 On Fri 5 Aug 2005 Julia Reid wrote
> Subject [R] GAP pointer
>
> I am trying to do a simple segregation analysis using the GAP package. I
> have the documentation for pointer but I desperately neHi
how can I extract the t-values after running a pairwise.t.test? The
output just list the p-values.
Many thanks for your help.
Cheers
Guido
Hello r-help
I 'm trying to fit birds counts over years using glm. In fact I 'm trying to reproduce an analysis already perform with genstat (attach document). I have done (with Estate
and year as faI am wondering if someone could cast some the box plot function. I have been having trouble manipulating boxplot to display the x & y axes in bold. I had the same problem with the x & y labels but mI am new to R so excuse me if its too basic. I have a vector of scores
S {s1 s2 s3 sn}
n could be very large.
I want to find p-value for each score andIt seems nice that R is part of the 'walled garden ' of applications specifically configured to run under Fedora Core 4 (Linux). The gnomeGUI has a separate installation routine under FC4 and yum tells |
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