Displaying 20 results from an estimated 4000 matches similar to: "Can I build an array of regrssion model?"
2002 Dec 25
2
Is there string class in R?
Hi,
I want to use R handle hundreds data file. So I want use some string
class to handle the names of data file.
My idea procedure like:
for i in 1:20
{
filename = "***" + i +".PRN"
scan(filename)
....
}
Do anyone know how to do this?
Thanks,
2003 Sep 28
1
geodata conversion
Hey,
I have a data set of 1.20MB. I used read.table( ) to read in the data and then tried to convert it to geodata type. But it failed and I got "Error in vector("double", length) : cannot allocate vector of length 1351974000" message.
All the commands I used were:
rawdata<-read.table(file=" ")
datag<-as.geodata(rawdata)
BTW, what is the biggest origin
2011 May 17
1
simprof test using jaccard distance
Dear All,
I would like to use the simprof function (clustsig package) but the available distances do not include Jaccard distance, which is the most appropriate for pres/abs community data. Here is the core of the function:
> simprof
function (data, num.expected = 1000, num.simulated = 999, method.cluster = "average",
method.distance = "euclidean", method.transform =
2012 Dec 10
1
Can somebody suggest how to achieve following data manipulation?
Dear all,
Let say I have following data:
RawData <- matrix(1:101, nr = 1); colnames(RawData) <- c("ASD",
as.character(as.yearmon(seq(as.Date("2012-03-01"), length.out = 100, by
= "1 month")))); rownames(RawData) <- "XYZ"
CutOffDate <- as.Date("2012-09-01")
NewDateSeries <- as.character(as.yearmon(seq(CutOffDate, to =
2008 Mar 23
1
mapply
In an earlier post, a person wanted to divide each of the rows of
rawdata by the row vector sens so he did below but didn't like it and
asked if there was a better solution.
rawdata <- data.frame(rbind(c(1,2,2), c(4,5,6))) sens <- c(2,4,6)
temp <- t(rawdata)/sens
temp <- t(temp)
print(temp)
Gabor sent three other solutions and I understood 2 of them but not the
2005 Aug 04
2
Avoiding for loop
I understand that in R, for loops are not used as often as other
languages, and am trying to learn how to avoid them. I am wondering
if there is a more efficient way to write a certain piece of code,
which right now I can only envision as a for loop. I have a data file
that basically looks like:
1,55
1,23
2,12
...
that defines a matrix. Each row of the data file corresponds to a row
of the
2006 Jul 12
4
Keep value lables with data frame manipulation
Dear R,
I import data from spss into a R data.frame. On this rawdata I do some
data processing (selection of observations, normalization, recoding of
variables etc..). The result is stored in a new data.frame, however, in
this new data.frame the value labels are lost.
Example of what I do in code:
# read raw data from spss
rawdata <- read.spss("./data/T50937.SAV",
2009 Jul 14
2
How to provide list as an argument for the data.frame()
Hi R -users,
i've a table as describe below. I'm reading the numeric value presented in this table to populate a list.
#table
#============
#X A B C
#x1 2 3 4
#x2 5 7 10
#x4 2 3 5
#============
rawData <- read.table("raw_data.txt",header=T, sep="\t")
myList=list()
counter=0
for (i in c(1:length(rawData$X)))
{
print (i)
2012 Jan 20
2
rbind()
Hello there,
Much thanks in advance for any help. I have a few questions:
1) Why do I keep getting the following error:
File1 <- read.csv("../RawData/File1.csv",as.is=TRUE,row.names=1)
Error in file(file, "rt") : cannot open the connection
In addition: Warning message:
In file(file, "rt") :
cannot open file '../RawData/File1.csv': No such file or
2011 Sep 08
2
pie chart
Hi All,
I have txt file like :
$ cat data.txt
US 10
UK 12
Ind 4
Germany 14
France 8
> rawdata <- read.table(file='data.txt',sep='\t' , header=FALSE)
> rawdata
V1 V2
1 US 10
2 UK 12
3 Ind 4
4 Germany 14
5 France 8
I want to draw pie chart for the above data.
How to split rawdata into :
con <-
2009 Aug 03
2
Scale set of 0 values returns NAN??
Hi,
More questions in my ongoing quest to convert from RapidMiner to R.
One thing has become VERY CLEAR: None of the issues I'm asking about
here are addressed in RapidMiner. How it handles misisng values,
scaling, etc. is hidden within the "black box". Using R is forcing me
to take a much deeper look at my data and how my experiments are
constructed. (That's a very
2009 Sep 28
1
help with lda function
I am having a problem understanding the lda package. I have a dataset here:
[,1] [,2] [,3]
[1,] 2.95 6.63 0
[2,] 2.53 7.79 0
[3,] 3.57 5.65 0
[4,] 3.16 5.47 0
[5,] 2.58 4.46 1
[6,] 2.16 6.22 1
[7,] 3.27 3.52 1
If I do the following;
"names(d)<-c("y","x1","x2")
d$x1 = d$x1 * 100
d$x2 = d$x2 * 100
g<-lda( y ~ x1 + x2, data=d)
v2
2012 Jun 28
1
Merging listed dataset into one
Hello,
I'm wondering how I can merge two featuresets into one.
My dataset is two sets of microarray data and it looks like followings:
> rawData
$v1
TilingFeatureSet (storageMode: lockedEnvironment)
assayData: 2197815 features, 59 samples
element names: channel1, channel2
protocolData
rowNames: LT290677RU_D1_2011-02-16 LT286300LU_D1_2010-07-24 ...
LT003990RU_D1_2010-11-04 (59
2009 Jun 16
1
adressing dataframes
Hi everyone,
I experience some problems with adressing of data.frames when I retrieve
some information for geographical position (ypos, xpos) ot of a MySQL
Database and want to perform some simple statistics. The problem is
adressing the dataframes with a construct like
rawdata[c(type)] vs. rawdata$TEMPMIN
to retrieve the numerical information and not a string (I want to store the
numerical
2003 Dec 10
2
OT: BibTex year-only citation in text?
Sorry for the off-topic question, but I know there are some talented
LaTeX users out there. Which bibliography style gives only the year in
text citations (e.g "for further details, see Anderson (1992)" )?
Thanks
Jason
--
Indigo Industrial Controls Ltd.
http://www.indigoindustrial.co.nz
64-21-343-545
jasont at indigoindustrial.co.nz
2003 Oct 21
5
run R under linux
Dear all,
Our department uses the linux system and we are not allowed to submit job
directly. We must make a batch to submit through "qmon".
so, I make a foo.sh file, which only contains one line: nohup R --vanilla <
foo.txt > foo.results
foo is all my codes. It is a simulation of 200 times. I set the seed at the
beginning. It is to estimate the success probability, which is
2008 Mar 22
2
More elegant multiplication or division of a data frame with a vector
Hello,
I am importing some raw voltage multichannel measurements into an R
data frame. I need to scale each column with the respective
sensitivity for that channel. I figured how to do it, but I am curious
if there isn't a more elegant way.
Now I start with something like this:
rawdata <- data.frame(rbind(c(1,2,3), c(4,5,6)))
sens <- c(2,4,6)
and I do this:
data <-
2009 Sep 20
1
Return a list from a .Call but segfaults
Hello,
I call a function via .Call passing to it a raw vector(D) and an
integer(I)
The vector is a series K1,KData1, V1,VData1, K2, KData2, ...
where the integer K1 is the length of Data1 and similarly for Ki (wrt
Datai)(similarly for V*) There 2*I such pairs( (Ki,KDatai), (Vi,VDatai))
The numbers Ki(and Vi) are written in network order.
I am returning a list of I elements each element a
2003 Nov 01
2
Question about the high dimensional density estimation
Hi,
I found that the R package "KernSmooth" can deal with only 1D and 2D data. But now I have a collection of 4-dimensional data (x1,x2,x3,x4) and would like to estimate the "mode" of the underlying density. What can I do about it ?
Thanks a lot.
--
Ying-Chao Hung
Assistant Professor
Graduate Institute of Statistics
National Central University
Chung-Li, Taiwan
TEL:
2009 Sep 29
1
help with lda function from MASS package
Thanks David,
Yes, I am talking about the MASS package.Thank you for pointing out that
these scale the same. My question is, how do I get from the V1 data:
V1
1 164.4283
2 166.2492
3 170.5232
4 156.5622
5 127.7540
6 136.7704
7 136.3436
to the other set of data:
+ 1 -2.3769280
+ 2 -2.7049437
+ 3 -3.4748309
+ 4 -0.9599825
+ 5 4.2293774
+ 6 2.6052193
+ 7 2.6820884
On Mon, Sep 28, 2009