Displaying 20 results from an estimated 600 matches similar to: "reshape matrix entities to columns"
2002 Nov 26
1
Reshape by multiple variables
Dear list
I'm using the reshape command and want to reshape a wide data set to a
long one
e.g. I have the variables y1,y2,y3,age1,age2,age3,sex,ethnic
I want my new long data set to consist of the variables y (which has
been created from y1,y2,y3), age (which has been created from
age1,age2,age3), sex and ethnic
I have tried to use the command:
2012 Feb 06
3
Duplicate rows when I combine two data.frames with merge!
Hello all,
First I have done extensive searches on this forum and others and nothing
seems to work. So I decided to post thinking someone could point me to the
write post or give me some help.
I have drawn a 100 samples from a fictitious population (N=1000), and then
randomly selected 25% of the 100 samples. I would like to now merge the
data.frame from the 100 samples with the data.frame for
2010 Sep 12
0
replacing matrix column entities as columns name
I am sending this again as they told me that the data was unreadable, so really
hope that this will work...so sorry all
note: matrix contains a lot of empty entities
Greeting R helpers
I am not familiar with R but I have to use it to analyze data set that I have
(30,000 20,000)
I want to change the structure of the dataset and I am wondering how that might
be possible in R
> Age
2007 Mar 05
1
Matrix/dataframe indexing
Hi all,
I am hoping someone can help me out with this:
If I have dataframe of years and ages and the first column and first row
are filled with leading values:
Df<- age1 age2 age3
Yr1 1 0.4 0.16
Yr2 1.5 0 0
Yr3 0.9 0 0
Yr4 1 0 0
Yr5 1.2 0 0
Yr6 1.4 0 0
Yr7 0.8 0 0
Yr8 0.6 0 0
Yr9 1.1 0 0
Now the rest of the cells need to be filled according to the previous
year and age
2005 Aug 12
2
coercing created variables into a new data frame using na.omit()
Hi,
I am an R newbie and one thing I am having trouble with binding variables that
I have created within one data frame into a new data frame when using
na.omit(). To illustrate this problem I will give the example I am working on
and the approah I have been using:-
data.frame1<-filepath....
attach(data.frame1)
#create a new variable using a function
new.variable<-rep(1,length(weight3))
2003 Dec 17
5
beginner programming question
Hi all,
The last e-mails about beginners gave me the courage to post a question;
from a beginner's perspective, there are a lot of questions that I'm
tempted to ask. But I'm trying to find the answers either in the
documentation, either in the about 15 free books I have, either in the
help archives (I often found many similar questions posted in the past).
Being an (still actual)
2011 Oct 05
1
calling a variable which in turn calls many more variables
Hi all,
I am running regressions with many covariates, most of which remain the same
each time (control variables). Instead of writing 30 demographic variables
every regression, is there a way I could call them all at once using a
variable called, perhaps "demog"?
I have tried:
> demog <- list(age1, age2, age3) but I get an error when I try to call a
list in a regression.
I also
2008 Jan 15
2
Looking for simpler solution to probabilistic question
Hi
I have two processes which take with a certain probability (p1 and p2) x
number of years to complete (age1 and age2). As soon as thge first
process is completed, the second one begins. I want to calculate the
time it takes for the both processes to be completed.
I have the following script which gives me the answer, butI think there
must be a more elegant way of doing the calculations
2008 Nov 06
3
unlist & dataframes
Dear all,
I would like to know whether it is possible to unlist elements and keep the
original format of the data.
To make it more clear, let me give an exemple:
I have a list l of dataframes that I created with apply but which looks like
this:
x1=data.frame(Name=LETTERS[1:2],Age=1:2)
x2=data.frame(Name=LETTERS[3:4],Age=3:4)
l=list(x1,x2)
l
[[1]]
Name Age
1 A 1
2 B 2
[[2]]
Name
2008 May 12
1
Standard error of combination of parameter estimates
Hi,
Is there a simple command for computing the standard error of a
combination of parameter estimates in a GLM?
For example:
riskdata$age1 <- riskdata$age
riskdata$age2 <- ifelse(riskdata$age<67,0,riskdata$age-67)
model <- glm(death~age1+age2+ldl,
data=riskdata,family=binomial(link=logit))
And we want to find the standard error of the partial linear predictor
for
2010 Aug 05
1
an issue about missing data
Hi,
I am using a function 'polygenic' in the package called 'GenABEL'.
--------------------------------------------------------------------------------
> h2.gs <- polygenic(b.dbp~age+age2+age3+sex+b.bmi, kin=gs.gkin, data=gs)
-------------------------------------------------------------------------------
## and I got the following error message:
Error in svd(X): infinite or
2006 Jun 26
0
sortables and accept question
i did some searching through the archives and didn''t really find an
answer to my question, so i''m going to just ask it.
i have a situation where there are 3 sortable lists. list1, list2,
and list3 i need list2 to accept divs from all 3 lists, but list1 and
list3 to only accept divs from the list1 and list3 i''ve added two
classes to the divs in my sortables: .rail
2007 Jun 01
2
Interaction term in lmer
Dear R users,
I'm pretty new on using lmer package. My response is binary and I have fixed
treatment effect (2 treatments) and random center effect (7 centers). I want
to test the effect of treatment by fitting 2 models:
Model 1: center effect (random) only
Model 2: trt (fixed) + center (random) + trt*center interaction.
Then, I want to compare these 2 models with Likelihood Ratio Test.
2020 Sep 21
2
Help with the Error Message in R "Error in 1:nchid : result would be too long a vector"
Hello everyone,
I am using *mlogit* to analyse my choice experiment data. I have *3
alternatives* for each individual and for each individual I have *9
questions*. I have a response from *516 individuals*. So it is a panel of
9*516 observations. I have arranged the data in long format (it contains
100 columns indicating different variables and identifiers).
In mlogit I tried the following
2010 Feb 11
1
Rounding multinomial proportions
I present you with a function that solves a problem that has bugged me for
many years. I think the problem may be general enough to at least consider
adding this function, or a revamped version of it, to the 'stats' package,
with the other multinomial functions reside.
I'm using R to export data to text files, which are input data for an
external model written in C++. Parts of the
2007 Nov 02
3
writing a categorical var. with condition
Hello,
I want to create a new variable which includes 4 age categories in this way:
if (age>=12 && age<32) age1==1
if (age>=32 && age<52) age1==2
if (age>=52 && age<72) age1==3
if (age>=72 && age<100) age1==4
but I get the results only for the first observation.
how can I apply this condition to all observations?
Thanks in advance,
2010 Sep 26
1
finding big matrix size and SVD
Dear R helpers
I have a big data sheet (CSV) which I use “read.csv” to read it
When im trying to get the Dim() it says 38 column which is not correct it should
be something about 400.
I am wondering whether there is any way I can read it right… I have used ncol()
and it’s the same answer
On the other hand I use to get the SVD of it but I have about 500,000 rows so
considering that it should
2005 Apr 15
5
Clustered xAPIC and Unisys ES7000 patch
Here is a patch for clustered xAPIC and Unisys ES7000 support in Xen. To
turn the features on add CONFIG_X86_CLUSTERED_APIC and CONFIG_ES7000
defines to xen/include/asm-x86/config.h
Signed off by Aravindh Puthiyaparambil
<aravindh.puthiyaparambil@unisys.com>
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
2012 Feb 01
4
wine command line arguments
Hi All;
I have just successfully installed Microsoft:
Age of Empires II,
Age of Empires II-Conquerors expansion,
Age of Empires III
on Wine 1.3.7.
No dll overides, no pissing about nothing, just dropped in the CD, mapped it to using winecfg and installed.
Empires II installed directly from disk and would not run after the install until I applied the no_Cd_patch and not are fine.
AoEIII has 3
2009 Sep 21
2
cox memory
Hi there,
I have a rather large data set and perform the following cox model:
test1 <- list(tstart,tstop,death1,chemo1,radio1,horm1)
out1<-coxph( Surv(tstart,tstop, death1) ~ chemo1+chemo1:log(tstop+1)+horm1+horm1:log(tstop+1)+age1+grade1+grade1:log(tstop+1)+positive1+positive1:log(tstop+1)+size1+size1:log(tstop+1), test1)
out1
Up to here everything works fine (with each covariate