Displaying 20 results from an estimated 32 matches for "testdat".
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testdata
2012 Jan 24
6
Checking for invalid dates: Code works but needs improvement
...tes ####
##########################################
#### Test Data ####
connection <- textConnection("
1 11/23/21931 05/23/2009 un/17/2011
2 06/20/1940 02/30/2010 03/17/2011
3 06/17/1935 12/20/2008 07/un/2011
4 05/31/1937 01/18/2007 04/30/2011
5 06/31/1933 05/16/2009 11/20/un
")
TestDates <- data.frame(scan(connection,
list(Patient=0, birthDT="", diagnosisDT="", metastaticDT="")))
close(connection)
TestDates
class(TestDates$birthDT)
class(TestDates$diagnosisDT)
class(TestDates$metastaticDT)
#### List of Date Variables ####
DateNames <-...
2012 Jan 26
0
R-help Digest, Vol 107, Issue 25
...nt-Type: text/plain; charset=us-ascii
Hello,
Point 3 is very simple, instead of 'print' use 'cat'.
Unlike 'print' it allows for several arguments and (very) simple formating.
{ cat("Error: Invalid date values in", DateNames[[i]], "\n",
TestDates[DateNames][[i]][TestDates$Invalid==1], "\n") }
Rui Barradas
Message: 53
Date: Tue, 24 Jan 2012 08:54:49 -0800 (PST)
From: Paul Miller <pjmiller_57 at yahoo.com>
To: r-help at r-project.org
Subject: [R] Checking for invalid dates: Code works but needs
improvement
Message-ID:...
2008 Sep 24
4
rowSums()
Say I have the following data:
testDat <- data.frame(A = c(1,NA,3), B = c(NA, NA, 3))
> testDat
A B
1 1 NA
2 NA NA
3 3 3
rowsums() with na.rm=TRUE generates the following, which is not desired:
> rowSums(testDat[, c('A', 'B')], na.rm=T)
[1] 1 0 6
rowsums() with na.rm=F generates the following, which i...
2009 Dec 10
2
different randomForest performance for same data
Hello,
I came across a problem when building a randomForest model. Maybe someone can help me.
I have a training- and a testdataset with a discrete response and ten predictors (numeric and factor variables). The two datasets are similar in terms of number of predictor, name of variables and datatype of variables (factor, numeric) except that only one predictor has got 20 levels in the training dataset and only 19 levels in...
2004 Mar 05
3
as.POSIXct problem
Hi all,
I'm having difficulty converting a 'dates' object to a POSIXct object:
testDATES<-c(35947,35971,36004,36008,36053,36066)
testDATES<-chron(dates=testDATES, format = c(dates = "m/d/y"),
origin=c(month = 12, day = 30, year = 1899))
>[1] 06/01/98 06/25/98 07/28/98 08/01/98 09/15/98 09/28/98
> as.POSIXct(testDATES)
[1] NA NA NA NA NA NA
>format(as.PO...
2002 Feb 02
1
chron problem: extracting days and years
Hello r-help,
I'm trying to split a character vector of dates of the form "dd-mmm-yy"
into component days, months and years. But
> library(chron)
> testdate<-as.POSIXlt(strptime("17-Sep-98","%d-%b-%y"))
> testdate
[1] "1998-09-17"
> months(testdate)
[1] "September" # which is fine, but for days and years I get
> days(testdate)
NULL
> years(testdate)
NULL
>
According to "?days"...
2011 Jan 17
1
Replacing rows in a data frame
R-helpers,
Below is a simple example of some output that I am getting while trying to work with a data frame in R 2.12.1 for Mac.
-----
> testdat <- data.frame(matrix(ncol=10, nrow=10))
> colnames(testdat) <- c('a','b','c','d','e','f','g','h','i','j')
> testdat[seq(1,10,3),] <- c(1,0,0,0,0,0,0,0,0,0)
> testdat
a b c d e f g h i j
1...
2012 Jan 18
4
R-Help
I am trying to create a frequency distribution and I am a bit confused.
Here are the commands I have entered:
> data <- read.csv(file="40609_sortedfinal.csv",head=TRUE,sep=",")
> NumberOfActionsByStatus = data$STATUS
> NumberOfActionsByUser = data$ETS_LOGIN
> NumberOfBidOffer = data$BID_OFFER
> NumberOfActionsByUser.freq = table(NumberOfActionsByUser)
>
2010 Sep 29
2
repeat a function
I have R randomly sampling my array made up of 2 columns of data. Here is
my code randomly sampling 5 different rows from my dataset to create a new
dataset of 8 rows of data:
testdat<-growth[sample(5,8,replace=T),]
Now I want to tell R to repeat this function 50 times and give me the
output. I have been searching the internet and have been unable to figure
this out. Any advice would be greatly appreciated.
Mike
[[alternative HTML version deleted]]
2011 May 30
1
CLI command 'database deltree' doesn't remove family with space in its name
While playing with DB function in Dialplan, I have added some garbage in
AstDB. These are some family names with space in them.
See this,
demo*CLI> database show
/18-05-2011 00:00:0052011175221575/TESTDATE : 2011-05-14 21:33:46
/18-05-2011 00:00:0052011175221575/TEST1 : 410
/18-05-2011 00:00:0052011175221575/TEST2 : 155
/18-05-2011 00:00:0052011182614252/TEST3 : 157
I treid to remove it from CLI through database deltree and database del
commands, but no hope.
demo*CL...
2010 Sep 29
2
resampling issue
...ce and then repeated it 5 times.
Here is my dataset of 9 fish samples with an age and length for each one:
Age Length
2 200
5 450
6 600
7 702
8 798
5 453
4 399
1 120
2 202
Here is my code which resamples my data to produce up to 9 different samples
and creates a new dataset of 12 samples:
testdat<-growth[sample(9,12,replace=T),]
Now I want R to repeat this procedure 5 times. Here is my code:
testdat2 <- replicate(5, sample(testdat), simplify=F)
testdat2
Here is my output showing that it did it once and then just repeated the
values:
> testdat2
[[1]]
Age Length
1 2...
2004 Mar 06
0
Summary: as.POSIXct
...rom both Prof Brian Ripley and Gabor Grothendiec solved
my problem.
From Prof Ripley:
>This is a problem of your OS: your example works on all of mine.
>
>Can't you change the origin in chron? If not, you should certainly be
>able to do
>
>as.POSIXct(strptime(as.character(testDATES), "%m/%d/%y"))
This still resulted in NA's on my system.
>
>Here's what I think you can do most easily:
>
>shift <- julian(1,1,1970, origin=c(month = 12, day = 30, year = 1899))
>as.POSIXct(chron(dates=unclass(testDATES) - shift))
But this worked.
From Gab...
2006 Aug 11
1
more on date conversion differences in 2.2.1 vs 2.3.1
...h dates I get different results with 2.2.1 and 2.3.1. From my
somewhat naive point point of view, the 2.2.1 behaviour seems more sensible.
Running the code below in 2.2.1:
V1
2006-08-01 2006-08-01
1 1
With 2.3.1 I get:
V1
1154354400 1154440800
1 1
# testdate.R
t <- read.csv2('testdate.csv', header=FALSE)
t$V1 <- as.POSIXct(t$V1)
print(t)
x <- xtabs(V2 ~ V1, data=t)
print(x)
# testdate.csv
2006-8-1;0;1
2006-8-1;1;1
2006-8-2;0;1
2006-8-2;0;0
2006-8-2;1;1
2008 Jul 24
2
Can R fill in missing values?
...sed the merge function by date for the attached two files), where all
the missing values are filled with NAs (which is what the all.x=TRUE does).
Is there any way to replace those NAs with the value of the latest row
that contains a value?
For example:
> Date<-read.table("Desktop/R/Testdate.txt", head=T, sep="\t")
> Data<-read.table("Desktop/R/Testinput.txt", head=T, sep="\t")
> Merged<-merge(Date, Data, all.x=TRUE)
> Merged
Date France Germany
1 3/10/07 2 4
2 3/11/07 NA NA
3 3/12/07 NA NA
4 3/13/0...
2011 Mar 12
1
Column order in stacking/unstacking
...ame (400 rows x 2000 columns), which I need to reduce
to a single column of values (and therefore 800000 rows), so that I can use
it in other operations (e.g., generating predictions from a GLM object).
However, the problem I'm having can be reproduced with something as simple
as this:
> testdat <- data.frame("1" = c(1:5), "2" = c(1:5), "10" = c(1:5))
> testdat
X1 X2 X10
1 1 1 1
2 2 2 2
3 3 3 3
4 4 4 4
5 5 5 5
Please note that the numeric column names are what I'm dealing with in my
real data frame too. Stacking into...
2011 Feb 15
3
expected behavior when parsing lines with special characters
...9 148305 2682116 MGG_10504 145615762 XP_366285.2
3499 5141 2709504 NCU07319.1 32414251 XP_327605.1
3499 3702 820842 AT3G15980 30683862 NP_850592.1
3499 3702 841666 AT1G52360 15218215 NP_175645.1
3499 3702 844339 AT1G79990 30699476 NP_178116.2
3499 4530 4340097 Os06g0143900 115466360 NP_001056779.1
testDat <- read.table('testFile.txt',sep='\t')
testDat
V1 V2 V3
1 3499 9031 424823
2 3499 4932 852740
3 3499 28985 2897447
4 3499 33169 4621659
5 3499 148305 2682116
6 3499 5141 2709504
7 3499 3702 820842
8 3499 3702 841666
9 3499 3702 844339
10...
2008 Mar 03
1
Tapply for Group Specific Means and Proportions
...the Behavior categories, 0.xx being the proportion per date-time)
I would appreciate it:
Date-Time MeanHt PE OS SI ...
28Mar96.0752 6.000000 0.xx 0.xx 0.xx ...
28Mar96.1014 7.000000 0.xx 0.xx 0.xx ...
TIA,
Bret (R 2.6.1 on I386-pc-mingw32)
Texas A&M
> Final
Sequence testdate testtime Behavior Substrate TreeHt
1 1 28Mar96 0752 PE TW 6
2 2 28Mar96 0752 OS <NA> 6
3 3 28Mar96 0752 PE TW 6
4 4 28Mar96 0752 PE TW 6
5 1 28Mar96 0924...
2011 Apr 13
3
predict()
Hi,
I am experimenting with the function predict() in two versions of R and the R extension package "survival".
library(survival)
set.seed(123)
testdat=data.frame(otime=rexp(10),event=rep(0:1,each=5),x=rnorm(10))
testfm=as.formula('Surv(otime,event)~x')
testfun=function(dat,fm)
{
predict(coxph(fm,data=dat),type='lp',newdata=dat)
}
# Under R 2.11.1 and survival_2.35-8
testfun(testdat,testfm)
> testfun(testdat,testfm)...
2011 Apr 13
3
predict()
Hi,
I am experimenting with the function predict() in two versions of R and the R extension package "survival".
library(survival)
set.seed(123)
testdat=data.frame(otime=rexp(10),event=rep(0:1,each=5),x=rnorm(10))
testfm=as.formula('Surv(otime,event)~x')
testfun=function(dat,fm)
{
predict(coxph(fm,data=dat),type='lp',newdata=dat)
}
# Under R 2.11.1 and survival_2.35-8
testfun(testdat,testfm)
> testfun(testdat,testfm)...
2008 Jul 23
2
Can't Load Text Files
...o work with) that I am trying to
load into R so that I can merge them. They were originally excel files
but I used "saved as" to reformat to text. I don't know if it's
relevant, but I use a mac.
These are the error messages I get:
> source("/Users/jiayingmei/Desktop/R/Testdate.txt")
Error in eval.with.vis(expr, envir, enclos) : object "Date" not found
Error in source("/Users/jiayingmei/Desktop/R/Testinput.txt") :
/Users/jiayingmei/Desktop/R/Testinput.txt: unexpected symbol at
1: Date France
I'm sure its something simple that is causin...