Displaying 20 results from an estimated 2000 matches similar to: "explanation of the problem.."
2013 Mar 11
0
splitting column into two
HI,
Try this:
dat1<- read.table(text="
?V1,V2,V3,V4,V5,V6,V7
?chr1,564563,564598,564588 564589,1336,+,134
?chr1,564620,564649,564644 564645,94,+,10
?chr1,565369,565404,565371 565372,217,+,8
?chr1,565463,565541,565480 565481,1214,+,15
?chr1,565653,565697,565662 565663,1031,+,28
?chr1,565861,565922,565883 565884,316,+,12
",sep=",",header=TRUE,stringsAsFactors=FALSE)
2013 Sep 09
0
Duplicated genes
Hi,
May be you can try this:
dat1New<-? dat1[!(duplicated(dat1$gene)|duplicated(dat1$gene,fromLast=TRUE)),]
dat2<-dat1[duplicated(dat1$gene)|duplicated(dat1$gene,fromLast=TRUE),]
?lst1<-split(dat2,dat2$gene)
dat3<-unsplit(lapply(lst1,function(x) {x1<- sum(apply(x[,6:32],2,function(y) y[1]>=y[2]));x2<- sum(apply(x[,6:32],2, function(y) y[1]<=y[2])); if(x1>x2) x[1,] else
2013 Mar 14
0
reshape
Hi Elisa,
You need to check your data.? For some 'st', the data is repeated/duplicated (I am assuming, didn't check it) especially for a particular year.
dat1<-read.csv("elisa.csv",sep="\t")
dat1$st<- as.character(dat1$st)
?str(dat1)
#'data.frame':??? 506953 obs. of? 5 variables:
# $ st?????? : chr? "AGOMO" "AGOMO"
2013 Jul 10
1
Kruskal.test
Hi,
Please dput() your example dataset.
dat1<- read.table(text="a?? a?? a?? a??? a??? b?? b??? b??? c??? c?? c??? c
2? 4??? 5?? 2??? 7??? 2?? 2??? 6??? 3??? 7?? 9??? 3
3? 3?? 4?? 1???? 6??? 8?? 1??? 3??? 5??? 2??? 6??? 3",sep="",header=FALSE,stringsAsFactors=FALSE)
library(reshape)
?dat2<-melt(as.data.frame(t(dat1)),id.var="V1")[,-2]
2013 Mar 29
1
Dataframe manipulation
Hi Adam,
I hope this is what you wanted:
dat1<- read.csv("example.csv",sep="\t",stringsAsFactors=FALSE)
?str(dat1)
#'data.frame':??? 102 obs. of? 5 variables:
# $ species? : chr? "B. barbastrellus" "E. nilssonii" "H. savii" "M. alcathoe" ...
# $ period?? : chr? "dusk" "dusk" "dusk"
2013 Apr 17
0
R question
HI Philippos,
Try this:
dat1<- read.csv("Validation_data_set3.csv",sep=",",stringsAsFactors=FALSE) #converted to csv
str(dat1)
#'data.frame':??? 12573 obs. of? 17 variables:
# $ Removed.AGC????????????????????????????? : num? 65.67 46.17 41.26 14.09 5.38 ...
# $ Removed.SST????????????????????????????? : chr? "" "46.1658" "41.2566"
2012 Aug 07
0
predicting test dataset response from training dataset with randomForest
Hi
I am new to R so I apologize if this is trivial.
I am trying to predict the resistance or susceptibility of my
sequences to a certain drug with a randomForest function from a file
with amino acids on each of the positions in the protein. I ran the
following:
> library(randomForest)
>
> path <- "C:\\..."
> path2 <- "..."
> name <-
2012 Nov 13
4
for loop
HI,
You can do this in many ways:
dat1<-read.table(text="
med1,med2,med3????
?1,0,1??????
0,1,1???
2,0,0
",sep=",",header=TRUE)??
#1st method
library(reshape)
dat2<-melt(dat1)
dat3<-aggregate(dat2$value,by=list(dat2$variable),sum)
?colnames(dat3)<-c("name","sum(n11)")
?dat3
#? name sum(n11)
#1 med1??????? 3
#2 med2??????? 1
#3 med3??????? 2
2013 Mar 22
3
Distance calculation
Hi Elisa,
I hope this is what you wanted.
dat1<-read.csv("peaks.csv",sep=",")
#Subset
dat2<-dat1[1:5,]
res1<-do.call(cbind,lapply(seq_len(nrow(dat2)),function(i) do.call(rbind,lapply(split(rbind(dat2[i,],dat2[-i,]),1:nrow(rbind(dat2[i,],dat2[-i,]))), function(x) {x1<-rbind(dat2[i,],x);
2010 Mar 22
1
Replacing elements of list
Dear all,
I have following two list object, both are basically collection of matrices
:
dat1 <- matrix(rnorm(25*6), ncol=6)
dat1 <- split(dat1, seq(5,25,by=5))
dat1 <- lapply(dat1, matrix, ncol=6)
dat2 <- matrix(rnorm(25*4), ncol=4)
dat2 <- split(dat2, seq(5,25,by=5))
dat2 <- lapply(dat2, matrix, ncol=4)
Now I want to replace last 4 columns of each matrix at "dat1"
2013 Jan 04
2
Can you help me please
HI Fares,
You could try this:
dat1<- read.table(text="
date????? donation
3jan2003?? 20235
4jan2003?? 25655
5jan2003?? 225860
6jan2003?? 289658
7jan2003?? 243889
8jan2003?? 244338
9jan2003?? 243889
",sep="",header=TRUE,stringsAsFactors=FALSE)
The post is not very specific as to what you need.? I hope this works for you.
library(xts)
2013 Sep 10
0
Looping an lapply linear regression function
Hi,
Try:
dat2<- read.csv("BOlValues.csv",header=TRUE,sep="\t",row.names=1)
dim(dat2)
#[1] 20 28
indx2<-expand.grid(names(dat2),names(dat2),stringsAsFactors=FALSE)
nrow(indx2)
#[1] 784
indx2New<- indx2[indx2[,1]!=indx2[,2],]
nrow(indx2New)
#[1] 756
res2<-sapply(seq_len(nrow(indx2New)),function(i) {x1<- indx2New[i,];
2011 Feb 02
0
How column names/row names are preserved in matrix calculation?
Can somebody tell me that, if I do some arithmetic calculation over 2
matrices then how the column names and row names are preserved? It seems
that, for multiplication, column names and row names of the 2nd matrix are
preserved and for additional, there seems not having any explicit rule:
> set.seed(1)
> dat1 <- matrix(rnorm(25), 5); colnames(dat1) = rownames(dat1) =
2010 Mar 30
2
Need help to split a given matrix is a "sequential" way
I need to split a given matrix in a sequential order. Let my matrix is :
> dat <- cbind(sample(c(100,200), 10, T), sample(c(50,100, 150, 180), 10,
> T), sample(seq(20, 200, by=20), 10, T)); dat
[,1] [,2] [,3]
[1,] 200 100 80
[2,] 100 180 80
[3,] 200 150 180
[4,] 200 50 140
[5,] 100 150 60
[6,] 100 50 60
[7,] 100 100 100
[8,] 200 150 100
[9,]
2012 Jul 01
2
list to dataframe conversion-testing for identical
HI R help,
I was trying to get identical data frame from a list using two methods.
#Suppose my list is:
listdat1<-list(rnorm(10,20),rep(LETTERS[1:2],5),rep(1:5,2))
#Creating dataframe using cbind
dat1<-data.frame(do.call("cbind",listdat1))
colnames(dat1)<-c("Var1","Var2","Var3")
#Second dataframe conversion
2008 May 11
1
Finding unmatched data between two dataframe using several factors
Hi R users
I am trying to find unmatched data from two dataframes. I would like to
find unmatched data based on several factors. For the following data:
dat1 <- data.frame(x = paste("A", 1:6, sep=""),
y = c("andy","bob","ciaran","dan", "eion",
"fred"))
dat1
dat2
2011 May 17
1
Subsetting depth profiles based on maximum depth by group with plyr
Hello,
Apologies for a similar earlier post. I didn't include enough details in
that one.
I am having a little trouble subsetting some data based on a grouping
variable. I am using an instrument that does depth profiles of a water
column. The instrument records on the way down as well as the way up. So
thanks to an off-list reply I can subset the data so that all data collected
at the
2007 Oct 05
0
use of specaccum in routine procedure
Dear list members, I have a data.frame so shaped:
Sector Quadrants Plot Sic Time Species1 Species2 Species3
.. Species-n
1 1 1 1 5 0 0 1
. 0
2 1 1 1 12 1 1 1
. 0
3 1 1 1 34 0 1 0
. 0
4 1 1 1 23 1 1 0
. 0
5 2 1 1 22 1 1 1
. 1
6 2 1 1 10 1 1 1
. 1
7 2 1 1 2 1 0 0
. 0
8 2 1 1 2 0 0 1
. 0
9 3 1 1 12 0 0 0
. 1
.
.
.
.
.
.
.
.
.
.
2005 Dec 29
1
S4 classes: referencing slots with other slots
For those who suggest other ways to do this, I ALREADY HAVE ANOTHER
DESIGN SOLUTION, DESCRIBED AT THE END.
That being said, I want to know if it's possible to reference a slot
in an S4 class from another slot, i.e. I'd like to have the "self.*"
semantics of Python so that I can reuse a slot. That is, for various
reasons it would be nice to be able to do something like:
2012 Jan 16
1
rho stat from a fasta sequence file
Hi all,
I have a sequence file (fasta format) and want to calculate the rho
statistics for dinucleotide abundance value on my data.. the code which I
use is (using seqinr library and current working directory)
seq_info<-read.fasta("gene.txt")
rho(seq_info[1],2)
but it yields only the dinucleotides, not their rho values, i.e,
> rho(seq_info[1],2)
aa ac ag at ca cc cg ct ga gc