On Fri, 6 Jul 2007, Eric Peterson wrote:
This is probably buried somewhere in the R help archives, but I've been
unable to find it, so perhaps the keywords I use here will help bring the
topic to the surface more easily for future users.
I want to write my own modeling function (ultimately
I'm not able to make out your data but something like this?
df - data.frame(A=rnorm(10),B=rnorm(10),C=runif(10))
stripchart(df,method=jitter)
--- Tavpritesh Sethi [EMAIL PROTECTED] wrote:
Hi all,
I have 205 rows with measurements for three categories of people. I want to
generate stripplots
David Farrelly wrote:
Hello,
I'm trying to make a 3d plot using rgl in which the size and color of
each point corresponds to certain attributes of each data point. The color
attribute, let's call it X, is scaled to go from 0 to 1. The
rainbow(64,start=0.7,end=0.1) palette is perfect for
Hi David,
I'm not an expert in 'rgl', but to determine data-dependent color for points
I often use cut().
# using a very simple example,
x - 1:2; y - 1:2; z - matrix(1:4,ncol=2)
# the following image will be a projection of my intended 3-D 'rgl' plot
# into 2-D space (if we don't consider color
Sorry all R'ers,
the crazy looking data for my query Multiple Stripcharts was an automatic
transpose of what I had pasted. The data was 3 rows indicating three
variables, 12 columns indicating samples. the samples were categorized as
A,B,C,A,B,C,A,B,C,A,B,C, as denoted by the header of the data. I
Alberto Monteiro wrote:
Ted Harding wrote:
So I slickly wrote a recursive definition:
Nnk-function(n,k){
if(n==1) {return(k)} else {
R-0;
for(r in (1:k)) R-(R+Nnk(n-1,k-r+1)) # ,depth))
}
return(R)
}
You are aware that this is equivalent to:
Nnk1 - function(n, k) {
Hi all
I define a function with two methods, one for numeric or integer.
Sometime, I need the numeric method to be applied on integer. So I try
to change the class of the integer but it does not work... Does someone
know why ?
x-1:3
class(x)
[1] integer
class(x)- numeric
class(x)
[1]
?mode
x - 1:10
str(x)
int [1:10] 1 2 3 4 5 6 7 8 9 10
class(x) - 'numeric'
str(x)
int [1:10] 1 2 3 4 5 6 7 8 9 10
mode(x) - 'numeric'
str(x)
num [1:10] 1 2 3 4 5 6 7 8 9 10
On 7/7/07, Christophe Genolini [EMAIL PROTECTED] wrote:
Hi all
I define a function with two methods, one for
Like Stephen Tucker I am not sure what your data are and what you
actually want. In the iPlots package you can draw interactive
parallel coordinate plots or parallel boxplots of x by y (where y is
a groups variable).
Antony
__
On 07-Jul-07 10:34:03, Uwe Ligges wrote:
Alberto Monteiro wrote:
Ted Harding wrote:
So I slickly wrote a recursive definition:
Nnk-function(n,k){
if(n==1) {return(k)} else {
R-0;
for(r in (1:k)) R-(R+Nnk(n-1,k-r+1)) # ,depth))
}
return(R)
}
You are aware that this is
On 07/07/2007 7:15 AM, (Ted Harding) wrote:
On 07-Jul-07 10:34:03, Uwe Ligges wrote:
Alberto Monteiro wrote:
Ted Harding wrote:
So I slickly wrote a recursive definition:
Nnk-function(n,k){
if(n==1) {return(k)} else {
R-0;
for(r in (1:k)) R-(R+Nnk(n-1,k-r+1)) # ,depth))
}
Dear R users,
Here is a couple a quick questions, for which I was unable to not find
any answer in the list archives and in the help:
1- Is there any R equivalents of the VB functions Cint, CStr, etc...
(for non VB users, these functions transform the category of a specified
variable and
You might also be interested in ReadMe by Daniel Hopkins, Gary King,
Matthew Knowles, and Steven Melendez . Website at http://
gking.harvard.edu/readme
--Ista
On Jul 7, 2007, at 6:00 AM, [EMAIL PROTECTED] wrote:
Re: Text Mining
Also see Ingo Feinerer's tm package and his nice vignette.
I'm familiar w/ relevel but that doesn't seem to help here
(e.g., tried setting the reference level to 3 but the second
model w/ the subset argument doesn't seem to estimate the
desired model).
Possibly another contrasts statement needs to be provided prior
to the second model, this time w/ a
Dear R users,
I wonder if it is possible to form a function from a character string. Here is
an example:
x=3
`-`(`+`(`^`(x,3),`^`(x,2)),1) # Here is my function evaluated.
[1] 35
V=list(`-`,(,`+`,(,`^`,(,x,,,3,),,,`^`,(,x,,,2,),),,,1,))
# Here I construct the string, it could be vector
Atte Tenkanen said the following on 7/7/2007 8:41 AM:
Dear R users,
I wonder if it is possible to form a function from a character string. Here
is an example:
x=3
`-`(`+`(`^`(x,3),`^`(x,2)),1) # Here is my function evaluated.
[1] 35
I am trying calculate a probability using numerical integration. The first
program I ran spit out an answer in a very short time. The program is below:
## START PROGRAM
trial - function(input)
{
pmvnorm(lower = c(0,0), upper = c(2, 2), mean = input, sigma = matrix(c(.1, 0,
0, .1), nrow = 2,
I want to gain thousands of random sampling data by randomizing the
presence-absence data. Meantime, one important limition is that the row and
column sums must be fixed. For example, the data tst is following:
site1 site2 site3 site4 site5 site6 site7 site8 1 0 0 0 1 1 0 0 0 1 1 1 0
1 0 1 1 0
I have a dataframe (mydf) that contains differences of means.
I wish to test whether these differences are significantly different from zero.
Below, I calculate the t-statistic for each column.
What is a good method to calculate/look-up the p-value for each column?
Thanks Sundar!
I wonder that - when evaluating F1 - the right mathematical formula is now also
printed!
F1
function (x)
x^3 + x^2 - 1
Atte
Atte Tenkanen said the following on 7/7/2007 8:41 AM:
Dear R users,
I wonder if it is possible to form a function from a character
string.
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
On Behalf Of Zhang Jian
Sent: Saturday, July 07, 2007 12:31 PM
To: r-help
Subject: [R] random sampling with some limitive conditions?
I want to gain thousands of random sampling data by randomizing the
I want to analyze the co-occurrence of some species. In some papers, the
authors said that the indexthe number of species combinations (COMBO) is a
good index. I try to calculate the index by R language. But I can not get
the right value. I think that I do not understand the concept of the index
It should be the number of unique sites. In this case, the number of
unique columns in the data frame. See ?unique. (Interestingly,
convention is usually that species are columns and sites are rows.)
For your sample data you only see 10 of the 2^17 possible combinations
of 17 species (not 2n).
Sorry, I can not understand your reply very clearly.
How to compute the number of unique sites ?
Can you give me a simply example or do a simply analyse using one data?
Thanks very much.
Jian Zhang
On 7/7/07, Sarah Goslee [EMAIL PROTECTED] wrote:
It
Hi.
I want to get a series data just like this:
sp1 sp2
1 2
1 3
1 4
1 5
2 3
2 4
2 5
3 4
3 5
4 5
I can get one part of the data every time, but I can get the data directly.
I try to use the loop, but it can not work. How to get it ? Thanks.
On 07-Jul-07 22:18:42, Zhang Jian wrote:
I want to analyze the co-occurrence of some species. In some
papers, the authors said that the indexthe number of species
combinations (COMBO) is a good index. I try to calculate the
index by R language. But I can not get the right value. I think
that
Is this what you want?
t(combn(5,2))
[,1] [,2]
[1,]12
[2,]13
[3,]14
[4,]15
[5,]23
[6,]24
[7,]25
[8,]34
[9,]35
[10,]45
On 7/7/07, Zhang Jian [EMAIL PROTECTED] wrote:
Hi.
I want to get a series data
Hello Dr. Lang and all,
I posted this message in R-help mail list, but havent
solved my problem so far. Therefore, could you help me
look at it?
I have loading problem with XML_1.9 under 64 bit
R2.3.1 for Mac OS X, which I got from
http://R.research.att.com/. XML_1.9 works fine under
32 bit
Hi all,
The survivals functions can be tested by the Log-rank test and others, for
example the Gehan-Breslow. The graham breslow work with the alpha values.
But I don't know how is the Gehan-Breslow test with R. Somebody know a
type function?.. or other suggestions? Any help will be really
hi everybody
I have to do a lot of Anova with R and I would like to have another type of
coefficients coding.. I explain.
by default if I have 2 temperatures for an experience. 100°C or 130°C and I
want to see the temperature effect on the presure
I want to estimate the coefficient of each
On 7/7/07, vincent guyader [EMAIL PROTECTED] wrote:
hi everybody
I have to do a lot of Anova with R and I would like to have another type of
coefficients coding.. I explain.
by default if I have 2 temperatures for an experience. 100°C or 130°C and I
want to see the temperature effect on the
Here is a step by step explanation.
The way you present the data is as species (rows) by sites (columns)
data frame
dim(species_x_sites)
[1] 17 20
There are in fact only 19 sites as one of the columns of the data frame
is the species name:
names(species_x_sites)
[1] Species Cuba
I have a solution
rinfo2 - (aov(pression~ temp, data=rebe))
model.tables(rinfo2)
thanks all
(good night if is time for your :P )
2007/7/8, vincent guyader [EMAIL PROTECTED]:
hi everybody
I have to do a lot of Anova with R and I would like to have another type
of coefficients coding.. I
On 08-Jul-07 00:36:46, vincent guyader wrote:
hi everybody
I have to do a lot of Anova with R and I would like to have another
type of
coefficients coding.. I explain.
by default if I have 2 temperatures for an experience. 100°C or 130°C
and I
want to see the temperature effect on the
What versions of adapt and R are you using? The current package was
built with R-2.5.1.
I tried your program with R-2.5.0, and got the answer 0.1501053 in
just a few seconds.
At 03:20 PM 7/7/2007, Philip wrote:
I am trying calculate a probability using numerical integration. The first
program
Hello everyone,
Is there anyone who is aware of any R package that has Discriminant
Adaptive Nearest Neighbor (DANN) classification by Hastie and Tibshirani?
Thanks in advance!
Tracy
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