Displaying 20 results from an estimated 1700 matches similar to: "Linear model, finding the slope"
2009 Apr 07
6
Sequences
Hi,
I am trying to make a sequence and am using a for loop for this. I want to
start off with an initial value ie S[0]=0 then use the loop to create other
values. This is what I have so far but I just keep getting error messages.
#To calculate the culmulative sums:
s<-rep(0,207) #as this is the length of the
vector I know I will have
s<-as.vector(s)
2004 Jan 22
1
Calculation of normalised red and green intensities
Dear Sir/Madam,
I could succesfully normalise my microarray data using marrayNorm package.
However, i have not been able to get normalised red and green channel
intensities through R package. Is there a possibility to write a formula
to calculate back the red and green channel intensities after normalisation
of the data. Do I need to incorporate this formula in my R script? I am
biologist
2009 Apr 10
3
turning list into vector/dataframe
Hi,
I have used this command :
resamples<-lapply(1:1000,function(i) sample(lambs,replace=F))
resamples2<-lapply(resamples,Cusum)
to get a list of 1000 samples of my data. The function Cumsum is defined as
follows:
Cusum<-function(x){
SUM<-cumsum(x)-(1:length(x))*mean(x)
min<-min(cumsum(x)-(1:length(x))*mean(x))
max<-max(cumsum(x)-(1:length(x))*mean(x))
diff<-max-min
2014 Oct 16
3
Continuous Normalisation error for attribute whenCreated when performing dbcheck
Hi all,
since the migration of our old Win2k domain to Samba4 some years ago
I get a lot of errors like the following when doing a
"samba-tool dbcheck --cross-ncs --fix" :
ERROR: Normalisation error for attribute whenCreated in
CN=rpc-Ns-Group,CN=Schema,CN=Configuration,DC=samdom,DC=com
value '19700101000000.0Z' should be '16010101000000.0Z'
Fix normalisation for
2009 Jul 03
2
normalised curve fitting with error bars
Dear List,
My data consist of nine columns and about 50,000 rows. It looks like
this.
-9.0225 3.46464 2.80926 -0.3847 3.73735 1.1058 -2.98936 1.38901 -8.1846
-2.4315 -5.1189 1.8225 3.3798 1.7874 4.693 -3.9286 1.4266 5.7849
-3.4894 -4.0305 3.7879 3.5195 2.9186 2.8685 -6.126 4.978 4.9381
4.5282 3.62558 -3.0455 4.6518 1.39746 0.68652 3.5708 -3.6404 -4.2963
-1.3183 0.6752 -4.0382 -2.5386
2009 May 13
2
converting numeric into character strings
Hi,
Im trying to put some numbers into a dataframe , I have a list of numbers
(change points in a time series) like such
[1] 2 11 12 20 21 98 99
but I want R to recognise this as just a character string so it will put it
in one row and column, ideally I want them seperated by commas so I would
have for example
Person Change points (seconds)
A
2007 Nov 09
3
Normalizing grouped data in a data frame
Hi
I am a newbie to R but have tried a number of ways in R to do this and
can't find a good solution. (I could do it out of R in perl or awk but
would like to know how to do this in R).
I have a large data frame 49 variables and 7000 observations however for
simplicity I can express it in the following data frame
Base, Image, LVEF, ES_Time
A, 1, 4.32, 0.89
A, 2, 4.98, 0.67
A, 3, 3.7, 0.5
2008 Dec 10
4
tapply within a data.frame: a simpler alternative?
Dear list,
I have a data.frame with x, y values and a 3-level factor "group",
say. I want to create a new column in this data.frame with the values
of y scaled to 1 by group. Perhaps the example below describes it best:
> x <- seq(0, 10, len=100)
> my.df <- data.frame(x = rep(x, 3), y=c(3*sin(x), 2*cos(x),
> cos(2*x)), # note how the y values have a different
2002 Oct 01
2
RE: Hlp in finding a native Ogg trim, fade & nomalise tool
Hi John
A trimer/vcut type application is possible but unfortunately not a
fade/normaliser. Not without decoding/encoding. I asked about this a
couple of years ago. Unlike MP3, the Ogg Vorbis format doesn't store a
global gain setting per frame.
I have often downloaded MP3 files from mp3.com and other sources for
broadcasting, and with the type of music I need, it is often not
normalised
2016 Mar 12
4
samba-4.3.6 and talloc-2.1.6
I build new version of talloc-2.1.6 (build from external tarball) and
samba-4.3.6.
But if I provision domain by command
samba-tool domain provision --realm=test.alt --domain test
--adminpass='Pa$$word' --dns-backend=SAMBA_INTERNAL --server-role=dc
--use-rfc2307 --use-xattrs=yes
I got error:
Fixing provision GUIDs
ERROR(runtime): uncaught exception - pytalloc_reference_ex() called for
2004 Oct 10
3
some help interpreting ANOVA results, please?
On Sun, 10 Oct 2004, RenE J.V. Bertin wrote:
> Could I ask some hints/help in interpreting the following ANOVA results,
> please? This concerns an experiment where I study the incidence and
> severity of motion sickness. I have Sickness.norm, a subjective
> discomfort/sickness estimate, normalised to 0..1, the session time T
> (normalised to 0..1 and binned in 0.2 wide bins) and a
2006 Nov 17
3
Trellis Plot Labels
Hello everyone,
I am ploting a groupeddata object with formula:
formula(mydatausegroup)
BF ~ HO | ID/Infar/Day
Using this command:
plot(na.omit(mydatausegroup), displayLevel=2,layout=c(10,2),aspect=2)
This trellis plot does almost what I want and produces a 10x2 trellis plot, each panel is labeled
as ID/Infar where infarct is either 1 or 0. And in each panel, it plots BF vs HO for each Day.
2008 Nov 17
1
HELP ON SCALING GENE EXPRESSION DATA TO -1,0,1
Hello R-Community,
I am a rookie in R and I am fascinated with the power of bio computing
by R. I am analysing gene expression data from Real time PCR. I have
used absolute gene quantitation to measure gene copy number in all my
transcripts. All my data has been normalised them to a housekeeping
gene, which is constitutive expressed.
My problem is as follows.
After normalising some of the genes
2005 Sep 09
1
Using IR port in Wine
Hi... i have a PDA and i sinchronize it in windows using my IR port. I would like to know if i can
use a IR port in wine and how can i assign a COM port in wine.
Regards
Joaqu?n
2011 Jun 24
1
[LLVMdev] Source Feature Extraction
Hi All,
I am new to LLVM. One of the things I would like to do is to try and extract
source features (e.g. a normalised distribution of the various type of
instructions in each function.), can anyone point me to a good way of doing
that?
If it is not already implemented do you think creating a feature Extraction
pass and passing it as an optimisation pass would be the way to go?
Cheers,
Sameer
--
2008 Sep 25
1
Transformation for -ve binomial data
Can anyone advise a good transformation for this data below to produce a normalised distribution?
Many thanks,
Georgina
No. of eggs on mosquito gut:
1 12 1 12 6 17 54 1 12 2 22 27 1 27 1 1 6 24 10 54 12 5 27 68 1 4 6 27 1 1 1 1 68 1 7 1 10 5 4 1 7 9 3 19 22 10 4
PhD Student
Division of Infection and Immunity
B5-29, GBRC
120 University Place
Glasgow
G12 8TA
Tel: 0141 330
2010 Jun 16
1
prcomp() and the lenght of PC:s
Hi,
I would like to know whether there is some deeper rationale behind or is it just an established practice that the lenghts of principal components, giving for example by prcomp-function, are normalised to 1?
Best regards,
Atte Tenkanen
University of Turku, Finland
Department of Musicology
+35823335278
http://users.utu.fi/attenka/
2013 Feb 21
2
package ReadImages
Dear all
I prepared some image processing routine which depended on package ReadImages. Basically I imported image to R, changed rgb to grayscale, normalised an image made some selections and changed to image by imagematrix.
Recently I learned that this package was removed from CRAN and can not be used in R 3.0.0.
What options I have now to import image to R, change it to grayscale, make some
2008 Aug 11
2
sampling
Hello,
I have a matrix and I want to sample 20 rows that are the the percentiles of
0-100 in 0.05 increments. I have a vector of my sequence
(0, 0.05, 0.10, 0.15,....1.0) and also
a normalised vector of rownumbers. That is, there are 234 rows (for
example) so I do
perc<-c(1:234/234)
which looks like a bunch of numbers from 0 - 1.
In Excel (which I try not to use at every possible
2011 Nov 07
1
repeating a loop
Hi
I have implented boxplots in my script to create box plots
BoxplotsCheck <- readline(prompt = "Would you like to create boxplots for any Feature? (y/n):")
if (BoxplotsCheck == "y"){
BoxplotsFeature <- readline(prompt = "Which Feature would you like to create a Boxplot for?:")
BoxplotsFeature <- as.numeric(BoxplotsFeature)
BoxplotsData