Displaying 11 results from an estimated 11 matches for "results1".
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2012 Mar 01
2
'break' function in loop
...o do is (1) permute ''or'' first; (2) doing t-test if this ''or'' pass criteria 1 (k=1); (3) end the loop when I get 10 permutations; (4) redo everything again but this time use criteria 2 (k=2) (I have more criteria 1:n).
Somehow using my script, the final dataset (results1) only contains the result from criteria 1 (twice!) but not the result from criteria 2. I guess probably I put the break function under the wrong loop but I cannot fix it. Sorry if the whole script looks quite messy, I will be very appreciate if someone can help me fix this problem or probably give...
2011 Feb 09
1
Iterate over a list of input files?
...n = "^[T]", full.names=TRUE)
# Create a data.frame with the
A = read.csv(Files[1], header=FALSE)[,c(1,7)]
A[,1] = as.Date(A[,1], format="%m/%d/%Y")
ASum <- with(A,aggregate(V7 ~ V1, FUN = sum))
colnames(ASum) = c("Date","PL")
# Merge the two data frames
Results1 <- merge(DateRange , ASum, by.x = "TradingDate", by.y =
"Date", all.x=TRUE)
Results1$PL[is.na(Results1$PL)] <- 0
DateRange[1:10,]
A[1:10,]
ASum[1:10,]
Results1[1:20,]
Files
It produces this list of results: (file list trimmed)
> DateRange[1:10,]
[1] "2009-06...
2013 Oct 15
1
Problem with lapply
...uot; and the corresponding p-Value. So I thought of making a list of
'cor.test's and then extract the needed values with a for loop. What I did
so far...
dataset=Testcor
dataset$DATE<-as.Date(dataset$DATE,"%Y-%m-%d")
firm.names=colnames(dataset)[2:length(colnames(dataset))]
cor.results1=lapply(firm.names,function(x)cor.test(as.formula(paste(firm.names[firm.names==x],Market)),data=dataset,na.action=na.exclude))
But I always get error messages like
Error in paste(firm.names[firm.names == x], Market) :
object 'Market' not found
or (when I attach dataset)
Error in parse(t...
2012 Feb 08
1
How indices calculated in package "boot"
...th this command and used "boot", I got different results.
Specifically, below are the codes for illustration.
(1) The typical way by generating indices in the package:
boot1 <- function (data, indices)
{
d <- data[indices]
return(d)
}
AA <- c(1:10)
require(boot)
set.seed(123)
results1 <- boot(data= AA, statistic=boot1, R=100)
(2) The alternative way by calculating "indices" myself:
boot2 <- function (data,indices)
{
indices <- sample(data, replace=TRUE)
d <- data[indices]
return(d)
}
AA <- c(1:10)
set.seed(123)
results2 <- boot(data= AA, statisti...
2007 May 14
2
creating a "list of 3 dataframes" from a "list of 2 dataframes" and a dataframe?
..."list of three dataframes" ("results2") from a "list of two dataframes" (temp) and a dataframe ("c")?
#Please advise.
a <- data.frame(x=c(1,2,3),y=c(5,7,9))
b <- data.frame(x=c(2,4,7,9),y=c(2,3,5,4))
c <- data.frame(x=c(22,34,7,9),y=c(52,63,5,4))
results1 <- list(a,b,c) #what I want
#but this is how I need to get there
temp <- list(a,b)
#results2 <- fun?????(temp2,c) # I need help here
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2015 May 11
1
Foreach %dopar% operator incorrectly load balancing
...library(Parallel)
nCores <- 4
cl <- makeCluster(nCores)
registerDoParallel(cl)
trials = 100000
x <- iris[which(iris[,5] != "setosa"),c(1,5)]
t2 <- system.time({
r2 <- foreach(icount(trials), .combine=cbind) %dopar% {
ind <- sample(100,100,replace= TRUE)
results1 <- glm(x[ind,2]~x[ind,1],family=binomial(logit))
coefficients(results1)
}})[3]
stopCluster(cl)
Another interesting behavior is that I can now stop R code that should be
running on the slave workers where as previously I had to use a kill command
to handle the workers.
I have checked th...
2009 Jul 28
3
Help with significance. T-test?
...nts, for example a
somewhat normal distribution. That's difficult of course when the values in
question are only "0" and "1"...
Has anybody any ideas?
Thanks a lot,
Mika
PS:
The data I have looks something like this (of course I actually have 500
values, not only 10):
results1: 0,1,1,1,0,1,1,0,1,0 accuracy: 0.6
results2: 0,0,1,1,0,0,1,1,1,0 accuracy: 0.5
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2007 May 30
2
How to search with limit by field
Hello,
I have a ferret index with 2 fields:
Acts_as_ferret :fields => [:client, :content]
If I do model.find_by_contents(query) I obtain all results by the query
but I would like to obtain 3 results for each client.
Any ideas?
Thanks for all.
--
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1997 Oct 23
0
R-beta: why restart()
...like an invitation to
> bad programming to me.
It's needed when comparing, say, the time to convergence (if at all) of various
iterative processes, for each of a few hundred simulated values. For example one
wants basically
function(data){
summary<-rep(NA,1000)
for(i in 1:1000){
results1<-prog1(data[i])
results2<-prog2(data[i])
.
.
.
summary[i] <- f(results1,results2,...)
}
summary
}
where prog1, say, can sometimes fail fatally, for certain data values. The
*object of the exercise* is to find out what values cause program i to crash but
program j to run ok....
2011 Nov 29
2
aggregate syntax for grouped column means
...m7", "600m7")), .Names = c("var1", "var2",
"id"), row.names = c(NA, -45L), class = "data.frame")
> head(myData)
var1 var2 id
1 31.59 33.78 0m4
2 32.21 33.25 0m4
3 31.78 NA 0m4
4 31.34 32.05 0m5
5 31.61 32.59 0m5
6 31.61 NA 0m5
results1 <- aggregate(. ~ id ,data=myData,FUN=mean,na.rm=T)
head(results1,1)
# id var1 var2
# 1 0m11 30.79 32.27
library(data.table)
mydt <- data.table(myData)
setkey(mydt,id)
results2 <- mydt[,lapply(.SD,mean,na.rm=TRUE),by=id]
head(results2,1)
# id var1 var2
# [1,] 0m11 30.84 32....
2012 Apr 06
2
read multiaple files within one folder
...,360))
listfile<-dir("C:\\PHD\\Climate Data\\Wind\\")
for (i in c(1:1460)) {
Testarray <- file(listfile[i], "rb")
Testarray[i,,]<- readBin(conne, integer(), size=2, n=360*720,
signed=F)
results <- mean(listfile[[(i*4):(i*4+3)]])
results1<- writeBin(results)
close(conne)
}
Thanks in advance
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