Displaying 20 results from an estimated 2000 matches similar to: "Documentation"
2007 Nov 25
5
Syslinux & usb booting
Hi
It looks to me there's some issues in the Linux implementation of syslinux (root ver, I don't have mtools).
When I used "syslinux -sf /dev/sda1", the stick was not bootable, it showed a black screen when booted, with a ";" appearing when I pressed a button.
The partition was marked active & bootable. And it was the only partition, and primary.
Then I did the
2007 Mar 10
2
barplot, for loop?
Hi R-users,
I have a dataset like this:
kuvaaja
kuva
yhteispisteet
Hannu
isokala
8
Hannu
kaapin alta löytynyt
2
Hannu
kaapin alta löytynyt 2
8
Hannu
limamikko
1
Hannu
maukasta marmeladia
8
Hannu
skrinnareita
4
Hate
madekoukkujen suojelupyhimys
3
Hate
matka aikaan joka ei enää palaa
3
Hate
munat puoliks padassa
6
Hate
pyynikki
2
Hate
vailla armeerausta
2
2007 Mar 11
1
recoding question
Hi R-users,
I have a data frame like this:
photographer category picture points
Hannu kalat limamikko 1
Teemu kalat verkkovaja 3
Hate kalat munat puoliks padassa 6
Hannu kalat isokala 8
Teemu kasvit, sienet ja muut eliöt harppi 2
Hate kasvit, sienet ja muut eliöt pyynikki 2
Petteri kasvit, sienet ja muut eliöt harmaaleppä 5
Lauri kasvit, sienet ja muut eliöt lumipuu 9
Teemu linnut kainostelua 1
2008 Jan 14
6
Ceiling to the nearest ten?
R-users,
Is there a function for ceiling to the nearest ten?
a <- 1:10*4
a
[1] 4 8 12 16 20 24 28 32 36 40
The resulting vector should look like this ("ceiling to the nearest ten")
[1] 10 10 20 20 20 30 30 40 40 40
Thanks in advance
Lauri
2008 Feb 21
4
How to get names of a list into df:s?
R users,
I have a simple lapply question.
g <- list(a=1:3, b=4:6, c=7:9)
g <- lapply(g, function(x) as.data.frame(x))
lapply(g, function(x) cbind(x, var1 = rep(names(g), each=nrow(x))[1:nrow(x)]))
I get
$a
x var1
1 1 a
2 2 a
3 3 a
$b
x var1
1 4 a
2 5 a
3 6 a
$c
x var1
1 7 a
2 8 a
3 9 a
And I would like to have
$a
x var1
1 1 a
2 2 a
3 3 a
2007 Mar 20
6
Select the last two rows by id group
Hi R-users,
Following this post http://tolstoy.newcastle.edu.au/R/help/06/06/28965.html ,
how do I get last two rows (or six or ten) by id group out of the data
frame? Here the example gives just the last row.
Sincere thanks,
Lauri
[[alternative HTML version deleted]]
2009 Sep 08
7
Data separated by spaces, getting data into R using field lengths
I have a text file similar to this (separated by spaces):
x <- "DF12 This is an example 1 This
DF12 This is an 1232 This is
DF14 This is 12334 This is an
DF15 This 23 This is an example
"
and I know the field lengths of each variable (there is 5 variables in
this data set), which are:
varlength <- c(2, 2, 18, 5, 18)
How can I import this kind of data into R, using the varlength
2008 Jan 02
3
Find missing days
Hi,
I have a data.frame like this:
y <- rnorm(60)
lev <- gl(3,20, labels=paste("lev", 1:3, sep=""))
date1 <- as.Date(seq(ISOdate(2007,9,1), ISOdate(2007,11,5),
by=60*60*24))
date1 <- date1[-c(3,4,15,34,38,40)]
df <- data.frame(lev=lev, date1=date1, y=y)
I would like to produce a new data.frame with missing days in df$date1
in each df$lev, like this:
lev
2007 May 18
4
Simple programming question
Hi R-users,
I have a simple question for R heavy users. If I have a data frame like this
dfr <- data.frame(id=1:16, categ=rep(LETTERS[1:4], 4),
var3=c(8,7,6,6,5,4,5,4,3,4,3,2,3,2,1,1))
dfr <- dfr[order(dfr$categ),]
and I want to score values or points in variable named "var3" following this
kind of logic:
1. the highest value of var3 within category (variable named
2007 Sep 10
3
plot legend: combining filled boxes and lines
Hello,
I have difficulties combining boxes and lines in plot legend. I
searched previous R-posts and found this (with no solution):
http://tolstoy.newcastle.edu.au/R/help/06/07/30248.html. Is there a
way to avoid boxes behind the line legends?
x1 <- rnorm(100)
x2 <- rnorm(100, 2)
hist(x1, main = "", col = "orange",ylab = "density", xlab = "x", freq
=
2008 Aug 20
2
Random sequence of days?
Dear list,
I tried to find a solution for this problem from the archives but
couldn't find any. I would like sample sequence of ten days from
vector d
d <- seq(as.Date("2007-02-12"), as.Date("2008-08-18"), by="days")
so that the days follow each other (sample(d, 10) is not the
appropriate solution). Any ideas?
Best regards,
Lauri
2007 Aug 07
4
Number of days in each month
Hi R-users,
What is the best way to achieve a table which contains all days and months
between years 2007-2020? I would like to calculate number of days in each
month within those years (to data frame).
Regards,
Lauri
[[alternative HTML version deleted]]
2007 Oct 15
2
Variable which has the maximum value of DF
Hi,
Suppose I have a data.frame like this
Lines <- "var1 var2 var3 var4 var5 var6
0 2 1 2 0 0
2 3 7 6 0 1
1.5 4 9 9 6 0
1.0 6 10 22 3 3
"
DF <- read.table(textConnection(Lines), skip=1)
names(DF) <- scan(textConnection(Lines), what = "", nlines = 1)
How do I find the
2007 May 20
2
Number of NA's in every second column
Hi R-users,
How do I calculate a number of NA's in a row of every second column in my
data frame?
As a starting point:
dfr <- data.frame(sapply(x, function(x) sample(0:x, 6, replace = TRUE)))
dfr[dfr==0] <- NA
So, I would like to count the number of NA in row one, two, three etc. of
columns X1, X3, X5 etc.
Thanks in advance
Lauri
[[alternative HTML version deleted]]
2008 Mar 18
3
How to get week of the year, scale 1-52?
R users,
I have a vector of dates
days <- seq(as.Date("2007/1/1"), as.Date("2008/1/31"), "days")
and I would like to have week numbers from 1 to 52 for each year. How
do I do that? Now I get 00-53 using
format(days, "%W")
> range(format(days, "%W"))
[1] "00" "53"
I have read "Date and Time Classes in R" (R
2008 Jan 11
2
How to add rowSums into list?
Hi R-users,
I have a list
a <- list(one=matrix(rnorm(20), 5, 4), two=matrix(rnorm(20, 3, 0.5),5,4))
How to add rowSums (calculated using lapply) to corresponding matrix
in this list
lapply(a, function(x) rowSums(x))
??
-Lauri
2008 Oct 28
1
How to export text into separate text files
Hello,
I'm producing text from my data.frame using cat function. I would like
to use for loop to export each column in my data.frame into separate
text files. Here is the example code
r <- t(Indometh)
for (i in 1:ncol(r)) {
cat("Some text,", "\n")
cat("\n")
cat("More text, More text, More text")
cat("\n")
2010 Feb 08
4
Problem with R on USB-drive
Hi,
I installed R on USB-drive, but when I run Rgui.exe from bin folder, I get
this error:
-----------------------
R version 2.10.1 (2009-12-14)
Copyright (C) 2009 The R Foundation for Statistical Computing
ISBN 3-900051-07-0
R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under certain conditions.
Type 'license()' or 'licence()' for
2008 Jun 17
3
Sweave: problem with usepackage{C:/PROGRA~1/R/R-27~1.0/share/texmf/Sweave}
R users,
I'm at a loss with a problem considering running .tex files produced
by Sweave. When I run (R 2.7.0):
---------------------------------------------------
#Taken from ?Sweave
testfile <- system.file("Sweave", "Sweave-test-1.Rnw", package = "utils")
## enforce par(ask=FALSE)
options(device.ask.default=FALSE)
## create a LaTeX file
Sweave(testfile)
2008 Feb 26
2
Combining series of variables using identifier
R users,
I have df like this
a <- data.frame( indx = 1:20,
var1 = rep(c("I20", "I40", "A50", "B60"), each=5),
var1_lab= rep(c("cat", "dog", "mouse", "horse"), each=5),
var2 = rep(c("B20", "X40", "D50",