Displaying 20 results from an estimated 1000 matches similar to: "Own R function doubt"
2009 Apr 22
4
read.table or read.csv without row index?
Hello all,
Probably my concepts about the data.frame and matrix and array in R
are not clear, I need some clarification to help me understand them
better.
>M <- read.table("test1.csv",sep=",",row.names=NULL,header=T)
gives me: M as
M1 M2 M3 M4 M5 M6 M7 M8 M9 M10
1 9 11 14 15 18 20 20 20 20 20
2 3 4 8 9 11 12 14 15 15 15
3 4 5 8 8 9 9 9 9 9 9
4 4
2008 Dec 26
3
lm() with same formula but different column/factor combinations in data frame
Hi,
I am trying to find an efficient way of applying a linear regression
model to different factor combinations in a data frame.
I want to obtain the output with minimal or no use of loops if
possible. Please let me know if this query is unclear.
Thanks,
Murtaza
2009 May 27
1
How to write a loop?
Dear R helpers,
Following is a R script I am using to run the Fast Fourier Transform. The csv files has 10 columns with titles m1, m2, m3 .....m10.
When I use the following commands, I am getting the required results. The probelm is if there are 100 columns, it is not wise to define 100 commands as fk <- ONS$mk and so on. Thus, I need some guidance to write the loop for the STEP A and
2007 Apr 04
2
Newbie: Simple loops: complex troubles
I am used to java (well, i dont remember it really well, but anyway)
I have having a really difficult time making simple loops to work. I got the
following to work:
##
##Creates objects Ux1, Ux2, Ux2 etc. that all contain n numbers in a
random distribution
##
m<-c(m1,m2,m3,m4,m5,m6,m7,m8,m9,m10)#these are defined as numbers (means)
v<-c(v1,v2,v3,v4,v5,v6,v7,v8,v9,v10)#these
2012 Dec 13
1
How do I make a loop to extract a column from multiple lists and then bind them together to make a new matrix?
Hi! I am new to looping and R in general; and I have sent waaaay to much
time on this one problem and am about a hair away from doing it manually
for the next two days.
So, there is a package that while calculating the statistic creates lists
(that look like matrices) in the background. Each item (there are 10
items) has one of these ‘matrix looking list’ that I need to extract data
from. The
2011 Mar 05
2
please help ! label selected data points in huge number of data points potentially as high as 50, 000 !
Dear All
I am reposting because I my problem is real issue and I have been working on
this. I know this might be simple to those who know it ! Anyway I need help
!
Let me clear my point. I have huge number of datapoints plotted using either
base plot function or xyplot in lattice (I have preference to use lattice).
name xvar p
1 M1 1 0.107983837
2 M2 11
2008 Jun 30
4
Rebuild of kernel 2.6.9-67.0.20.EL failure
Hello list.
I'm trying to rebuild the 2.6.9.67.0.20.EL kernel, but it fails even without
modifications.
How did I try it?
Created a (non-root) build environment (not a mock )
Installed the kernel.scr.rpm and did a
rpmbuild -ba --target=`uname -m` kernel-2.6.spec 2> prep-err.log | tee
prep-out.log
The build failed at the end:
Processing files: kernel-xenU-devel-2.6.9-67.0.20.EL
Checking
2009 Sep 30
1
How to calculate KMO?
Hi All,
How do i calculate KMO for a dataset?
*Dataset:---------------------*
m1 m2 m3 m4 m5 m6 m7 m8
1 2 20 20 2 1 4 14 12
2 9 16 3 5 2 5 5 15
3 18 18 18 13 17 9 2 4
4 7 7 2 12 2 11 11 11
5 7 8 5 19 5 2 20 18
6 7 4 7 4 7 9 3 3
7 5 5 5 12 5 13 13 12
8 6 6 4 3 5 17 17 16
9 12 12 4 2 4 4 14 14
10 5 14
2009 Aug 18
15
dlm stress test hangs OCFS2
This email is also sent to cluster-devel at redhat.com. Since this issue is about
both dlm and ocfs2, I send the email here to look for help from upstream.
This is an already known issue.
on ocfs2 with user space cluster stack, run the test script from
http://people.redhat.com/~teigland/make_panic on the mounted ocfs2 volume from 2
nodes simultaneously, the access to ocfs2 volume on both nodes
2005 Feb 14
1
gam(mgcv) starting values
Hi all!
I?ve got some problems with the function gam (library mgcv). For some
models I get the error message :
Error: no valid set of coefficients has been found:please supply
starting values
In addition: Warning message:
NaNs produced in: log(x)
This is a shortened code I used:
gam(y ~ M1 + M3 + M4 + M5 + M6 + sex + M1*M3 + s(age),
family=Gamma(link ="identity"),
weights=days)
If
2005 May 30
3
sapply following using by with a list of factors
Background:
OS: Linux Mandrake 10.1
release: R 2.0.0
editor: GNU Emacs 21.3.2
front-end: ESS 5.2.3
---------------------------------
Colleagues
I am having some trouble extracting results from the function by, used to
average variables in a data.frame first by one factor (depth) and then by a
second factor (station). The real data.frame is quite large
> dim(data.2001)
[1] 32049 11
Here is a
2012 Aug 08
1
dimnames in array
Hello,
I'm working with an array; I'm trying to make it so that an array of
dim(42,2,2) has names whose length corresponds to that of the array,
and am hoping someone with experience with this can see what I'm not
doing correctly:
data11 = array(0,c(41,2,2))
y = lsoda(x0,times,fhn$fn.ode,pars)#This is make.fhn() from colloc
infer package#
y = y[,2:3]
2008 Sep 16
1
Different PCA results under Windows and Linux
I ran the following R script under both Linux and Windows, and got 2
different results.
Linux R version 2.7.1 and Windows R version 2.7.2.
> library(FactoMineR)
>x1=read.table("freqtest.txt",header=TRUE)
>xrcc2=x1[,1:8]
>p1=PCA(xrcc2, graph=FALSE)
>p1$var
freqtest.txt file lines of text :
M1 M2 M3 M4 M5 M6 M7 M8
-1 -1 -1 -1 -1 -1 -1 -1
0 0 0 0 -1 -1 1 1
-1 -1 -1 -1 -1 -1
2005 Apr 12
1
factors in multinom function (nnet)
Dear All:
I am interested in multinomial logit models (function multinon, library nnet) but I'm having troubles in choose whether to define the predictors as factors or not.
I had posted earlier this example (thanks for the reply ronggui):
worms<- data.frame(year= rep(2000:2004, c(3,3,3,3,3)),age=rep(1:3,5),
2004 Jun 10
1
X-12-ARIMA
Dear All,
I've used the X-12-ARIMA or its earlier versions from S+ and R under both Unix
and Windows platforms for many years using the klugey approach of calling an
executable using in R the system function. I've found this serviceable for the
following reasons.
1) Paul Gilbert's hunch is correct that many of the subroutines have extensive
IO calls (especially the X-11 engine)
2008 Aug 05
0
[LLVMdev] Ideas for representing vector gather/scatter and masks in LLVM IR
On Tuesday 05 August 2008 12:39, Dan Gohman wrote:
> On Tue, August 5, 2008 8:32 am, David Greene wrote:
> > On Monday 04 August 2008 17:56, Dan Gohman wrote:
> >> The applymask approach leverages use-def information rather than
> >> what can be thought of as duplicating a subset of it, making the IR
> >
> > I don't understand what you mean by
2008 Aug 07
6
[LLVMdev] Ideas for representing vector gather/scatter and masks in LLVM IR
On Tuesday 05 August 2008 13:27, David Greene wrote:
> Neither solution eliminates the need for instcombine to be careful and
> consult masks from time to time.
>
> Perhaps I'm totally missing something. Concrete examples would be helpful.
Ok, so I took my own advice and thought about CSE and instcombine a bit.
I wrote the code by hand in a sort of pseudo-llvm language, so
2013 Nov 15
1
[LLVMdev] DebugInfo: LTO Metadata Size reduction by removing some cycles
>From a thread with Adrian on llvm-commits I looked a little at cases where
DwarfCompileUnit's getOrCreateContextDIE's "fallback to return the CU"
didn't fire when a CU DIE was required (ie: when the "getDIE" call actually
found the CU before the fallback happened)
This seems unnecessary, and any case where we do this (where a metadata
node has a non-null
2001 Nov 14
0
OPEN ssh pkg
Hi,
I have a few corrections for OPENssh-2.9p1 solaris packaging.
I use to configure:
setenv CFLAGS -I/opt/local/include
setenv LDFLAGS "-R/opt/JGMAzlib/lib -L/opt/JGMAzlib/lib"
./configure --prefix=/opt/OPENssh --with-tcp-wrappers --sysconfdir=/etc/opt/OPENssh --localstatedir=/var/opt/OPENssh --with-pid-dir=/var/opt/OPENssh/run --with-ssl-dir=/opt/OPENssl --with-ipv4-default
2009 Nov 30
1
multiple column argument in formula (MASS:lda)
Dear R Help team,
I'm having some problems running a discriminant analysis (MASS:lda)
over my data, i have a grouping variable coming from a previous
cluster analysis and several discriminators (78 actually). I'm trying
to run lda using column index as independent variable in the formula
like it's done in the help page for ?formula: