Displaying 20 results from an estimated 500 matches similar to: "selecting significant predictors from ANOVA result"
2009 Jun 15
4
reading Excel file
Dear all,
I was using older version of R (installed early). I install new version of R (R.2.9.0) but i could not find package "xlsReadWrite" to read Excel file. Is there any alternatives to read Excel file ?
I hope it should be.
I need help although it is minor querry.
Thanks in advance.
Sincerely,
Ram Kumar Basnet
Wageningen University,
The Netherlands
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2008 Oct 27
3
Problem in installation of "Rgraphviz" package
Dear R users,
I am not so used to this R software. I have to use the package " Rgraphviz" but found some problem in the installation process. I download this package and store in R library but i am not getting this package in R installation list.
I made review in google search net and use the following command:
###
source("http://bioconductor.org/biocLite.R")
2008 Dec 06
2
Barplot label
Dear all,
I am trying to make barplot from matrix with "beside=FALSE". I have 165 labels in my bar plot. When i plot the label horizontally below the barplot, then all labels are not appear in the plot due to lack of space. I used the following function:
barplot(t(bar), main="Barplot based on LCMS", ylab="RF membership Probability",
2010 Dec 05
3
merging two vectors
Dear R users,
It may be very simple but it is being difficult for me.
I have two vectors with some common string. And, i want to combine into a vector in such a way that it includes string from both vectors and make a unique.
For example:
x <- paste(rep("A",5),1:5,sep = ".")
x
[1] "A.1" "A.2" "A.3" "A.4" "A.5"
y <-
2009 Nov 25
4
Importing many files from a single code
Dear R users,
Does somebody know the way to import many files by a single command in R ? I have 50 files in a directory and now, i am importing the files repeatedly (one by one). If there is a way to import all files at a time, it makes much more easy and save times too.
Thanks in advance.
Sincerely,
Ram Kumar Basent
Wageningen University,
the Netherlands
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2008 Sep 02
1
how to increase row number
Hi
I think this may be simple task but creating trouble to me.
In my calculation, i have got large number of rows (5546) and column 182 but i am not able to see all the rows. May be somebody have idea how i can see all the rows ? I will be greatful if any body help me.
Thanks in advance
Sincerely,
Ram Kumar Basnet
Graduate student
Wageningen University
Netherlands
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2008 Nov 18
1
Statistical querry on Partial correlation test
Hi R users,
I want to calculate the partial correlation (first or second order) and their corresponding significance test (p-value).
I used
> library(corpcor)
and "cor2pcor" function to calculate partial correlation but could not calculate "p-value".
If some one knows the R package or function to calculate corresponding "p-value", It will be great help.
Thanks
2009 Aug 04
2
error in Elastic net
Dear R users,
I am new user for elastic net. I am trying to use elasticnet library.
I have marker data with 359 markers and 168 samples, and response is metabolites. I am trying to do regression between a metabolite and markers.
But i am getting the following error:
> en<-enet(marker,as.numeric(vio),lambda=0.5,normalize=FALSE,intercept=TRUE)
Error in one %*% x : requires numeric
2009 Dec 15
1
Type III sum of square in ANOVA
Dear all,
Does some body have idea on how to extract Type III sum of Square from "lm" or "aov" function in R ? I could not figure out it.
If this is minor and irrelevant to post in this mail, I am sorry for that.
Thanks.
Sincerely,
Ram Kumar Basnet
Wageningen University,
Netherlands
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2011 Nov 16
2
Conversion of symmetry matrix into a vector
Dear R users,
I am not good in R-language programming. So, i need your help.
I want to convert my lower-triangle value of symmetry matrix into a vector with their row and column name.
I found a function called "sm2vec" in "corpcor" package but it give only a vector of values but not row and column names. But i also want ROW and COLUMN name together with their corresponding
2013 Apr 19
5
how to subtotal by rows
Dear R-users,
I have a dataset as like below, and I want to subtotal the values of rice,wheat and maize by year for each fid.
fid year rice wheat maize
------------------------------------------------
1 1995 5 NA NA
1 1995 NA 3 NA
1 1995 NA NA 2
1 1996 4 NA NA
1
2008 Sep 05
2
Error: can not allocate vector of 117.3 Mb
Hi R users,
I am doing multiscale bootstrapping for clustering through pvclust package. I have large data set (observations 182 and variables 5546). When i tried to make bootstrapping, then i got message as "Bootstrap (r = 0.5)............Error: cannot allocate vector of size 117.3 Mb".
I am new R user and could not understand what is the problem and also don't know the easiet
2009 Nov 27
2
matching and extracting data
Dear all,
I have querry on how to extract the data by matching between two data set where one has the same elements multiple times?
For example, I have two matrix X and Y.
> X
[,1] [,2] [,3]
1 A 5 P
2 B 6 P
3 C 7 P
4 D 5 Q
5 E 6 Q
6 F 7 Q
7 G 5 R
8 H 6 R
9 I 7
2008 Sep 15
1
how to plot PC2 vs PC 3 in PCA
Hi everybody,
I am doing principal component analysis (PCA) using "prcomp' function. When i did "Biplot", i did not found interesting result and it is based on Principal component (PC) 1 vs PC2. Now, i want to see"Biplot" in combination of either PC1 vs PC3 or PC2 vs PC 3. I did not get the ideas.
Does any one have ideas ?
I am optimistic on getting some idea.
2009 Jun 08
1
Random Forest % Variation vs Psuedo-R^2?
Hi all (and Andy!),
When running a randomForest run in R, I get the last part of an output
(with do.trace=T) that looks like this:
1993 | 0.04606 130.43 |
1994 | 0.04605 130.40 |
1995 | 0.04605 130.43 |
1996 | 0.04605 130.43 |
1997 | 0.04606 130.44 |
1998 | 0.04607 130.47 |
1999 | 0.04606 130.46 |
2000 | 0.04605 130.42 |
With the first column representing the
2011 Dec 02
1
Error in Genetic Matching
Dear R Users,
I am a novice learner of R software. I am working with Genetic Matching - GenMatch(), but I am getting an Error message as follows:
Error in GenMatch(Tr = Tr, X = X.binarynp, BalanceMatrix = BalanceMatrix.binarynp, :
GenMatch(): input includes NAs
Could you please suggest me correcting the above problem?
My GenMatch command is,
> gen1 <- GenMatch(Tr = Tr, X =
2008 Oct 01
1
Error: cannot allocate vector of size 117.3 Mb
Dear R users,
I am using RandomForest package. While using this package, i got
"Error: cannot allocate vector of size 117.3 Mb" .........................message.
I had this problem earlier too but could not manage. Is there any way to solve this problem or to increase vector size ? My data set is of 163 samples and 5546 variables.
I tried through "? Memory" function to solve
2008 Sep 28
1
how to make subset of large data
I have very large data set. I want to make subset of data based on the matching. For example,
> x
[1] "a" "b" "c" "f"
> yy
"a" "-0.761988113636315" "-0.117672628171555" "-0.885641151614679"
"b" "-1.13288279283289"
2011 Aug 12
1
problem in asreml function in wgaim package
Dear R users,
I am trying to use "wgaim" package for QTL analysis using mixed model approach. But i am stuck with "asreml" function while using "wgaim" package.
Do i need a separate package to activate "asreml" function beside "wgaim" package ?
If so, i tried to download "Asreml-R" package (i guess this is right package
2012 Jul 15
1
how to extract p-value in GenMatch function
Dear R-Users,
I have a problem on extracting T-Stat and P-Value. I have written R-code below
library("Matching")
data("lalonde")
attach(lalonde)
names(lalonde)
Y <- lalonde$re78
Tr <- lalonde$treat
glm1 <- glm(Tr~age+educ+black+hisp+married+nodegr+re74+re75,family=binomial,data=lalonde)
pscore.predicted <- predict(glm1)
rr1 <-