Okay, I've been convinced of both
the feasibility and the desirability
of a pdf. However, such a thing is
unlikely to appear very soon.
On 23/10/2010 20:23, 刘力平 wrote:
Hi, all:
My opinion is, provide a PDF tutorial is important, but not one web page
containing everything.
From the perspectiv
On 24/10/2010 04:35, Steve Lianoglou wrote:
[ ... ]
Speaking as as an older R-user to a new R-user, I can understand some
of the frustrations you feel with coming up to speed with a new
programming language.
One piece of advice I have for you is that you should actually take
the time to read
Dear R-users,
i try to use the following code to do a gamma regression
glm(x1 / x2 ~ x3 + x4 + x5 + x6 + x7 + x8, family=Gamma(link="log"),
weights=x2)
but here i get the error
Error: NA/NaN/Inf in foreign function call (arg 1)
In addition: Warning message:
step size truncated due to diverge
On Sun, Oct 24, 2010 at 10:33 AM, Patrick Burns
wrote:
> If you look at 'Introduction' through the eyes of
> a complete novice, it is really, really scary.
>
Ditto. I had no programming background prior to learning R, and after
half a minute glancing through the 'Intro to R' I've decided that this
Hello Jim,
Please reply to the list - you'll have a much better chance of getting
useful suggestions.
> OK so some addition info. I know each of the X2 is in (0,1). Is there any
> method available?
I don't think that's sufficient to estimate b, at least not in my
experience of fitting Bayesian m
Dear All,
I would like to plot a scalar (e.g. a temperature) on a non-rectangular
domain (or even better: I would simply like to be able to draw a contour
plot on an arbitrary 2D domain). I wonder if there is any tool to
achieve that with R. I did some online search in particular on the list
a
On 24-Oct-10 11:30:57, Lorenzo Isella wrote:
> Dear All,
> I would like to plot a scalar (e.g. a temperature) on a non-rectangular
> domain (or even better: I would simply like to be able to draw a
> contour plot on an arbitrary 2D domain). I wonder if there is any
> tool to achieve that with R. I
On 10/24/2010 01:51 PM, (Ted Harding) wrote:
On 24-Oct-10 11:30:57, Lorenzo Isella wrote:
Dear All,
I would like to plot a scalar (e.g. a temperature) on a non-rectangular
domain (or even better: I would simply like to be able to draw a
contour plot on an arbitrary 2D domain). I wonder if there
On 24.10.2010 14:14, Lorenzo Isella wrote:
On 10/24/2010 01:51 PM, (Ted Harding) wrote:
On 24-Oct-10 11:30:57, Lorenzo Isella wrote:
Dear All,
I would like to plot a scalar (e.g. a temperature) on a non-rectangular
domain (or even better: I would simply like to be able to draw a
contour plot
On Oct 24, 2010, at 4:30 AM, Lorenzo Isella wrote:
Dear All,
I would like to plot a scalar (e.g. a temperature) on a non-
rectangular domain (or even better: I would simply like to be able
to draw a contour plot on an arbitrary 2D domain). I wonder if there
is any tool to achieve that with
On 10/24/2010 02:55 PM, David Winsemius wrote:
On Oct 24, 2010, at 4:30 AM, Lorenzo Isella wrote:
Dear All,
I would like to plot a scalar (e.g. a temperature) on a
non-rectangular domain (or even better: I would simply like to be able
to draw a contour plot on an arbitrary 2D domain). I wonder
On Oct 24, 2010, at 6:12 AM, Lorenzo Isella wrote:
As to the domain of the function, at least in case (1), that should
arise from the collected data points in (x,y) if the sampling is
dense enough.
And that is precisely what you get from the perimeter function. The
earlier Design packag
>
> Here is a dodge I often use. This is a mock-up example.
Very instructive (and helpful) ...
>
> ___
>
> bar <- data.frame(matrix(rnorm(1001), nrow = 1))
> names(bar)[1] <- "y" ## say
> head(bar[,1:5])
>
> nbar <- names(bar)
> form <- as.formula(paste(nbar[1], "~", paste(nbar[-1],
Dear all,
I'm working with two point patterns (ppp) in spatstat. I turned one of
them into a spatial covariate (im) object. After that, I used this im
object to fit a Poisson model for the second point pattern, using the
covariate layer from the first one.
In R, the whole thing looks somewhat lik
The OOB error estimates in RF is one really nifty feature that alleviate
the need for additional cross-validation or resampling. I've done some
empirical comparison between OOB estimates and 10-fold CV estimates, and
they are basically the same.
Andy
> -Original Message-
> From: r-help
This won't be as quick as Bill's elegant solution, but it's a one-liner:
apply(d, 1, function(x), match(1, x))
See ?match.
-Peter Ehlers
On 2010-10-22 10:36, David Herzberg wrote:
Bill, thanks so much for this. I'll get a chance to test it later today, and
will post the outcome.
David S
Would anybody be able to advise on which package would offer the best
approach for producing a model able to predict the probability of species
occupation based upon a range of variables, some of them catagorical (eg.
ten soil types where the numbers assigned are not related to any
qualitative/qua
Hi all,
I generated a covariance matrix and visualized as a 2D contour plot (x,y,
covariance matrix), I would like to extract from the matrix the values ( in
x and y) that auto-correlate which I will plot as an normal (x,y(being the
values that auto-corelate to a certain x and y values in my origi
Hi,
And thanks for helping. I am anyway a bit puzzled, since case (1) is not
only a matter of interpolation. Probably the point I did not make clear
(my fault) is that case (1) in my original email does not refer to an
irregular grid on a rectangular domain; the set of (x,y) coordinate
could sta
Hello everyone.
These days I am writing some code for a small project. I have started having
problems with different versions of the files I keep (in case I need to move to
older files).
I need some easy cvs platform ( I do not know if cvs is the general name or a
specific program) that is easy
On Wed, Oct 20, 2010 at 5:30 PM, Nutter, Benjamin wrote:
> I run into that problem frequently. I can usually circumvent it by using
> the
> quote = "\""
> Argument. The default is quote = "\"'" which uses the double and
> single quote as quoting symbols. If you change it to "\"" it will read
>
Hi,
I have a dataframe with 43 columns and a 1000 rows. Each entry in the
dataframe can be either P or A.
here is a small chunk:
c1c2 ...c43
r100 P A ... P
r101 A A ... A
r102 P P ... P
How does one subset this data frame to select those rows t
Hi Anjan,
Please consider the following example:
> x <- c(2, rep(1, 10))
> all(x == 1)
[1] FALSE
> d <- replicate(10, sample(x, replace = TRUE))
> d
[,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10]
[1,]111111211 1
[2,]11121
Hi,
On Sun, Oct 24, 2010 at 1:15 PM, Alaios wrote:
> Hello everyone.
> These days I am writing some code for a small project. I have started having
> problems with different versions of the files I keep (in case I need to move
> to
> older files).
> I need some easy cvs platform ( I do not know
Thanks all for your help.
Anjan
On Sun, Oct 24, 2010 at 1:38 PM, Jorge Ivan Velez
wrote:
> Hi Anjan,
>
> Please consider the following example:
>
> > x <- c(2, rep(1, 10))
> > all(x == 1)
> [1] FALSE
> > d <- replicate(10, sample(x, replace = TRUE))
> > d
> [,1] [,2] [,3] [,4] [,5] [,6] [,
Whoops, got an extra comma in there somehow; should be:
apply(d, 1, function(x) match(1, x))
-Peter Ehlers
On 2010-10-24 08:17, Peter Ehlers wrote:
This won't be as quick as Bill's elegant solution, but it's a one-liner:
apply(d, 1, function(x), match(1, x))
See ?match.
-Peter Eh
quick programming question. I am not making enough errors in my
programs, so I want to trigger a few more. ;-)
[1] undefined variable behavior:
> d=data.frame( x=rnorm(1:10), y=rnorm(1:10))
> z
Error: object 'z' not found
> d$z
NULL
is this consistent? I thought that z is the same as .GlobalE
On 24-Oct-10 19:55:12, ivo welch wrote:
> quick programming question. I am not making enough errors in my
> programs, so I want to trigger a few more. ;-)
>
> [1] undefined variable behavior:
>
>> d=data.frame( x=rnorm(1:10), y=rnorm(1:10))
>> z
> Error: object 'z' not found
>> d$z NULL
>
> is
Dear Sir/Madam
*CALL FOR PAPER DECEMBER ISSUE*
Greetings from INTERNATIONAL JOURNAL OF COMPUTER TECHNOLOGY AND APPLICATIONS
(IJCTA)
IJCTA is an international, peer-reviewed online journal entitled to publish
original research articles in the fields of Computer science and Information
technolog
Dear List
I just downloaded and installed R 2.12.0 and then installed R Commander .
First it got RCmdr and Car, and then suggested for other packages for
utilizing the full functionality- I clicked yes!
I got 140 packages installed!!! Cran Mirror was UCLA...
Here is the list.
Is this intention
Hi, dear fellows,
I was wondering how can I simulate from an estimated density function? I
used my training data set and already have estimated density values at some
fixed points. I plan to simulate some data from such estimated density and
compare them to my validation data set. Anyone can help
I'm trying to import a CSV file into R and when it gets imported, the
entries get numbered down the left side. How do I get rid of that?
Thanks,
Jason
*> read.csv(file="C:\\Program Files\\R\\Test Data\\sales.csv",head=TRUE)
Month Sales
1January 422
2 February 151
3 March
On 10/24/2010 04:57 PM, Jason Kwok wrote:
I'm trying to import a CSV file into R and when it gets imported, the
entries get numbered down the left side. How do I get rid of that?
When you imported the CSV file into R, an object of class data.frame
was created, and since you did not assign it t
Thanks for the response Erik.
In this case, I would like to keep the row name as the month. How would I
do that?
Thanks,
Jason
On Sun, Oct 24, 2010 at 6:20 PM, Erik Iverson wrote:
> On 10/24/2010 04:57 PM, Jason Kwok wrote:
>
>> I'm trying to import a CSV file into R and when it gets importe
You usually simulate a distribution by:
1. building the cumulative distribution (use cumsum).
2. Simulating a random number (from uniform distribution, use runif
(number_of_simulations_needed)).
3. Get the closest number to the number simulated from the cumulative
distribution.
4. The corresponding
sales <- read.csv(file="C:/Program Files/R/Test Data/sales.csv",
header=TRUE, row.names = "Month")
^^^
-Original Message-
From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On
Behalf Of
On Mon, Oct 25, 2010 at 12:26 AM, Jason Kwok wrote:
> Thanks for the response Erik.
>
> In this case, I would like to keep the row name as the month. How would I
> do that?
>
You can do this in Rcmdr. First Data > Import > From text file (or
select your data.frame as active data set), then Data >
On Sun, Oct 24, 2010 at 2:54 PM, Peter Ehlers wrote:
> Whoops, got an extra comma in there somehow; should be:
>
> apply(d, 1, function(x) match(1, x))
>
A slight variation on this would be:
apply(d, 1, match, x = 1)
--
Statistics & Software Consulting
GKX Group, GKX Associates Inc.
tel:
Dear Ajay,
This is a consequence of installing the dependencies (including "suggested"
packages, etc.) of the Rcmdr package, their dependencies, and so on
recursively. The alternative would be for the Rcmdr package to specify its
direct dependencies via "depends" rather than "suggests," but then t
On Oct 24, 2010, at 9:30 AM, Lorenzo Isella wrote:
Hi,
And thanks for helping. I am anyway a bit puzzled, since case (1)
is not
only a matter of interpolation. Probably the point I did not make
clear
(my fault) is that case (1) in my original email does not refer to
an
irregular grid o
Can you provide a reproducible code?
Ravi.
Ravi Varadhan, Ph.D.
Assistant Professor,
Division of Geriatric Medicine and Gerontology
School of Medicine
Johns Hopkins University
Ph. (410) 502-2619
email: rvarad...@jhmi.edu
---
I seem Unable to allocate arrays of size > around 2GB in 64 bit Windows 7
R. There is a lot of main memory available. The memory.limit is set to the
max memory available, and there is more than 10GB of that available when R
returns an 'unable to allocate memory' error. Is this a limitation of R
e
Dear R user,
Can you please
help me. How do I convert part of a cluster analysis output under the heading
âClustering
vectorâ as shown below, showing the clusters to which each respondent belongs
to:
Â
  [1] 1 1 2 2 1 2 1 2 1 1 2 2 1 2 2 2 2 1 1 1
1 2 2 1 2 2 1 2 2 2 2 2 2 2 2 1 2
Â
Hello,
How would you go about handling the following situation?
This is on R 2.12.0 on Ubuntu 32-bit.
I have a wrapper function to lm. I want to pass in a
subset argument. First, I just thought I'd use "...".
## make example reproducible
set.seed(123)
df1 <- data.frame(age = rnorm(100, 50, 10
Dear R-helpers,
apologies if this is somewhere in a manual, I have not been able to
find anything relevant. I run Windows Vista.
I have some Fortran code in a subroutine, and have no problem calling
this from R with .Fortran, compiling the code either with 'R CMD
SHLIB' or independently with gfo
I am about to give an introduction to R to some clinical data managers
used to SAS. There is already a lot of material in printed form and
on the web that paves the way. What I haven't found so far are text
wrapping capabilities in setting tables in raw text as in SAS PROC
REPORT.
At the moment i
2010/10/25 Johannes Huesing
> I am about to give an introduction to R to some clinical data managers
> used to SAS. There is already a lot of material in printed form and
> on the web that paves the way. What I haven't found so far are text
> wrapping capabilities in setting tables in raw text as
I would demonstrate one of the many LaTeX table functions. Off hand,
packages xtable, hmisc, and quantreg all have functions that convert R
objects to LaTeX tables.
If they're unwilling to work in LaTeX, you can use something like
LaTeXiT or Laeqed to create PDFs or PNGs of the tables for inserti
Hi
r-help-boun...@r-project.org napsal dne 25.10.2010 00:47:22:
> sales <- read.csv(file="C:/Program Files/R/Test Data/sales.csv",
> header=TRUE, row.names = "Month")
> ^^^
>
>
> -Original Message-
> From: r-help-boun...@r-pro
Is there a way to do it? At best what I can achieve
is non integer:
> runif(10, min=1, max=100)
[1] 51.959151 56.654146 63.630251 3.172794 4.073018 11.977437 86.601869
[8] 75.788618 11.734361 6.770962
-G.V.
__
R-help@r-project.org mailing list
ht
Check ?sample.
Nick Sabbe
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ping: nick.sa...@ugent.be
link: http://biomath.ugent.be
wink: A1.056, Coupure Links 653, 9000 Gent
ring: 09/264.59.36
-- Do Not Disapprove
-Original Message-
From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On
Behalf Of Gundala Vis
Hi all,
I am attempting to learn my way through the sem package by constructing
a simple structural model for some of my data on bird diversity,
abundance, and primary productivity.
I have constructed a covariance matrix between these variables as per
the following:
>S_matrix = matrix(c(
>+
Hi R helpers,
I am trying to use the if statement to generate a truncated random variable
as follows:
if (y[i]==0) { v[i] ~ rnorm(1,0,1) | (-inf ,0) }
if (y[i]==1) { v[i] ~ rnorm(1,0,1) | (0, inf) }
I guess I cannot use " | ( , ) " to restrict the range of a variable in R.
Could you let me kno
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