Hi Hannes,
>From my experience, this error usually happens when you've got spaces in the
header row, in the column names.
An easy solution would be to open the file in excel, then run
search-and-replace on the header row for all spaces and replace them with a
hyphen "-".
Hope it helped (please let
On Aug 4, 2009, at 2:12 PM, Meenu Sahi wrote:
Dear R Users
I'm writing my first simulation in R.
I've put across my problems with a smaller example in the attachment
along
with the questions.
Please help.
See Simpson reply to Q1
##Question2: How can I easily identify which out of the 9
Another options is:
sprintf("%.0E", 0.2)
On Wed, Aug 5, 2009 at 9:18 AM, Henrique Dallazuanna wrote:
> You can try this:
> toupper(format(0.2, scientific = TRUE))
>
>
> On Wed, Aug 5, 2009 at 9:05 AM, Wittmer, Irene wrote:
>
>>
>> Dear Helpers,
>>
>> I would like to export a large dataset to a tx
I think you want to use either 'match' or '%in%'
x <- dataframe$ID %in% list$ID # TRUE if it is in list
On Wed, Aug 5, 2009 at 5:36 AM, Rnewbie wrote:
>
> I wanted to extract my interested rows from a dataframe. I used:
>
> grep(list$ID, dataframe$ID, value=T) #list contains a list of my interes
Use 'sprintf' to format your data before writing out:
> sprintf("%G", runif(10,1e6, 1e10))
[1] "3.67382E+09" "9.47111E+09" "1.02591E+09" "5.368E+09"
"8.17346E+08" "2.89006E+09" "6.62398E+09" "1.29721E+09" "9.99348E+09"
[10] "6.73539E+09"
On Wed, Aug 5, 2009 at 8:05 AM, Wittmer, Irene wrote:
>
>
You can try this:
toupper(format(0.2, scientific = TRUE))
On Wed, Aug 5, 2009 at 9:05 AM, Wittmer, Irene wrote:
>
> Dear Helpers,
>
> I would like to export a large dataset to a txt file in order to use it
> in an other programm.
> Unfurtunatly the R the scientific format is a small e:
>
> 2 e-1
"Intro to R" should tell you. A vector is basically a one-dimensional
object (addressed x[i]) and an array has multiple dimensions
(addressed x.array[i,j,k]). What confusion do you have? Think of a
2-dimensional array as a matrix or an Excel worksheet.
On Wed, Aug 5, 2009 at 12:42 AM, chalie ep
Here is one way:
# use 'lapply' to generate your list of 'sets'
sets <- lapply(1:100, function(x){
# create your set of data
runif(100) # test data
})
# put into matrix for 'matplot'
# generates a very busy plot with 100 sets of data
sets.m <- do.call(cbind, sets)
matplot(sets.m, type='l'
I wanted to extract my interested rows from a dataframe. I used:
grep(list$ID, dataframe$ID, value=T) #list contains a list of my interested
IDs
I got one match in return, which is the very first ID in list. It seems the
matching process just stopped, once the first match was found.
David Win
Dear Helpers,
I would like to export a large dataset to a txt file in order to use it
in an other programm.
Unfurtunatly the R the scientific format is a small e:
2 e-1
while the other programm requires the format to be a capital E:
2E-1
How can I change this in R?
Thanks for your help
PS
You can also try:
readLines(...)
This seems to be able to read in difficult txt files.
Good luck.
--- On Wed, 8/5/09, hannesPretorius wrote:
> From: hannesPretorius
> Subject: Re: [R] i'm so stuck with text file and contour plot
> To: r-help@r-project.org
> Date: Wednesday, August 5, 2009, 4
spencerg wrote:
Have you looked at RExcel and the RExcelInstaller package?
There is now a companion book: Heiberger and Neuwirth (2009) R
Through Excel: A Spreadsheet Interface for Statistics, Data Analysis,
and Graphics (Springer)? Both Amazon and the Springer web site say it's
n
What do you get with:
count.fields(c:/small.txt', sep='\t', header=TRUE)
On Aug 5, 2009, at 5:09 AM, hannesPretorius wrote:
When I read the entire text file in I get the following message
x <- read.table('c:/small.txt', sep='\t', header=TRUE)
Warning message:
number of items read is not a
For publication purposes I need to come up with B&W images (grey codes
allowed). For normal R graphics this presents no problem.
For lattice graphics, I can get everything B&W except for the box in
which the conditioning variables are written per panel.
I have searched the manuals but to no avail
On Aug 5, 2009, at 3:32 AM, Baidya Nath Mandal wrote:
Hi everybody,
I installed Rglpk package from local zip files.
What files? What system? How installed?
Then I tried to load the
package in a R session. But R shows following message.
Perhaps you did not install the dependencies? (The
Have you looked at RExcel and the RExcelInstaller package?
There is now a companion book: Heiberger and Neuwirth (2009) R
Through Excel: A Spreadsheet Interface for Statistics, Data Analysis,
and Graphics (Springer)? Both Amazon and the Springer web site say it's
not yet availabl
Have you looked at Heiberger and Neuwirth (2009) R Through Excel:
A Spreadsheet Interface for Statistics, Data Analysis, and Graphics
(Springer)?
Both Amazon and the Springer web site say it's not yet available.
However, the Springer booth at the Joint Statistical Meetings was
se
It's a bit of a puzzle to me that this has remained unanswered for 7
hours. Perhaps the readers who know the answers are reluctant to offer
them because they have such low opinions of stepwise strategies but do
not want to express such negativity. Or perhaps they thought that an
RSiteSearch
Hannes,
>> When I read the entire text file in I get the following message
Then you have not followed the very simple instructions I gave you above,
which I repeat below. Or you have changed small.txt.
##
TDat <- read.csv("small.txt", sep="\t")
TDat
str(TDat)
Mark.
hannesPretorius wrote:
>
On Wed, 5 Aug 2009, Hardi wrote:
Hi,
I ran an experiment with 3 factors, 2 levels and 200 replications and as
I want to test for residuals independence, I used Durbin-Watson in R.
I found two functions (durbin.watson and dwtest) and while both are
giving the same rho, the p-values are greatly
On Wed, 2009-08-05 at 10:28 +1000, Remko Duursma wrote:
> > Nice, but I need a few columns for the data. Don't know how to do this with
> > the method you suggest.
>
> For each iteration, you make a vector of your 'data', in the example
> it is a vector of length 3.
> Each of the elements in this
On Tue, 2009-08-04 at 23:42 +0530, Meenu Sahi wrote:
> Dear R Users
>
> I'm writing my first simulation in R.
> I've put across my problems with a smaller example in the attachment along
> with the questions.
Q1 - mydat4[, 1:2] is not a matrix! It is a data.frame.
> class(mydat4[, 1:2])
[1] "dat
Hi,
I ran an experiment with 3 factors, 2 levels and 200 replications and as I want
to test for residuals independence, I used Durbin-Watson in R.
I found two functions (durbin.watson and dwtest) and while both are giving the
same rho, the p-values are greatly differ:
> durbin.watson(mod1)
lag
On Tue, 2009-08-04 at 18:37 +0100, Federico Calboli wrote:
> On 4 Aug 2009, at 18:27, David Winsemius wrote:
>
> > Your first posting made me think that you were complaining that the
> > fitted values were less than the raw values. Your second posting makes
> > me think that you may be conflating
Try this using built in data frame iris:
> length(subset(iris, Sepal.Length >= 7, Sepal.Width)[[1]])
[1] 13
> length(subset(iris, Sepal.Length >= 7 & Species == 'virginica',
> Sepal.Width)[[1]])
[1] 12
> # or the following (note that dot in Sepal.Length is automatically
> # converted to _ becaus
Hi List,
I'm trying to calculate the autocorrelation coefficients for a time
series using acf at various lags. This is working well, and I can get
the coefficients without any trouble. However, I don't seem to be able
to obtain the significance of these coefficients from the returned acf
object, l
Dear R users,
Does Elasticnet (package "elasticnet") handle the missing value in predictors
? If some one can provide the way to hadle missing value, it will great.
Thanks in advance.
Sincerely,
Ram Kumar Basnet
Wageningen University,
The Netherlands
[[alternative HTML ver
Hi everyone,I need you all help.
I want to create few image in same diagram.
For example, I wan draw two ellipse in same diagram.
plot(ellipsePoints(2,5, alpha = 60), asp=1)
and
plot(ellipsePoints(2,5, alpha = 30), asp=1)
How to display both ellipse together? both is different in angle.
Thank
When I read the entire text file in I get the following message
> x <- read.table('c:/small.txt', sep='\t', header=TRUE)
Warning message:
number of items read is not a multiple of the number of columns.
thanks.
hannesPretorius wrote:
>
> Ok i feel pretty stupid.. been trying to read a tex
Hi everybody,
I installed Rglpk package from local zip files. Then I tried to load the
package in a R session. But R shows following message.
Loading required package: slam
Error: package 'slam' could not be loaded
In addition: Warning message:
In library(pkg, character.only = TRUE, logical.retur
Jason Rupert wrote:
Is there a place that shows how to create two plots that are stacked on top of
each other where they share a common x-axis scale, but have differnt y-axis
scale?
Say have the following data: airquality
Stack plot(airquality$Day, airquality$Wind) on top of plot(airquality$D
Hi,
I am using the lda function from the MASS library. I would to find the
decision boundaries of each class and subsequently plot them. I wonder if
anybody can offer any help on this topic?
Below I applied the lda function on a small dataset of mine.
Any help will be much appreciated.
> lib
Dear all,
I want to do double cross validation for example for Ridge
regression/ lasso . One round of cross validation for optimising the
parameter (lambda) and another round of cross validation for MSEP(Mean
Square Error for Prediction). Any package which does it or some code??
T
Hi list,
I've got a class B that contains a slot obj of class A. I'd like to be
able to call all the methods of class A directly on objects of class B
as if I had called the method on slot obj. This without overloading all
methods of class A to work on class B.
I don't define B as an extension
Thanks for your suggestions Mark,
On 04.08.2009, at 19:16, Mark Wardle wrote:
Alternatively, can't you copy the data to the Linux box using sftp
first?
This is perhaps the easiest option. I have established sftp
connection. Now I simply add all files I need to use.
So the problem is solve
Short course: Statistical Learning and Data Mining III:
Ten Hot Ideas for Learning from Data
Trevor Hastie and Robert Tibshirani, Stanford University
Danube University
Krems, Austria
25-26 September 2009
This two-day course gives a detailed overview of statistical models for
data mining, infere
Hi,
I am trying to generate 100 different random walks each containing 500
variables.
The script I am using to develop one time series:
> x <- w <- rnorm(500)
> for (t in 2:500) x[t] <- x[t - 1] + w[t]
>From here I become stuck as I would like to generate a series and name it
Set1 for the first
Harry,
I you use dummy variables, then you can only use (n-1) dummy variables
if your variable has n levels. Otherwise you introduce
multicollinearity! If you use n dummy variable then you can express one
dummy variable as a linear combination of the others.
Make use of a factor variable. That is
Dear Mo,
This is rather easy. Add an ID to each data series, rbind them into one
data.frame and use the colour argument of qplot.
data1 <- data.frame(corArms = rnorm(1000))
data2 <- data.frame(corArms = rnorm(3000, sd = 0.5))
data3 <- data.frame(corArms = rnorm(2000, sd = 2))
data1$ID <- "Data
Hello !
I´m using randomForest for classifacation problems. My dataset has 21.000
observations and 96 predictors. I know that some predictors of my dataset have
more influence to classify my data than others.
Therefore I would like to know if there is a way to weight my predictors. I
know that
On Tue, 2009-08-04 at 20:16 -0700, Mohan S wrote:
> HI
>
> am plotting different density plots in one graph each with a different
> color.
>
> And i want to add labels to plot mentioning which color belongs to which
> data series.
>
> p2 <- qplot(corArms, data = data1, geom = "density", adju
Hi,
1) I think vector subscripting is faster than the solution below.
2) I don't understand the question, but it may be an idea to look at
?tableSlice and ?tableMargin in the gRbase package.
Regards
Søren
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