Displaying 20 results from an estimated 1000 matches similar to: "R process slow down after a amount of time"
2012 Feb 01
6
While loop working with TRUE/FALSE?
Hi R users,
is there any possibilty that a while loop is working like that:
z <- c(0,1,2,3,4,5,6,7,8,9)
r <- 7
while(w == T) {
for ( i in 1:10 ){
w <- r == z[i]
print(w)
}
}
The loop should stop if w == TRUE
best regards
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2012 Nov 22
2
Trick to replace NA
Dear members,
I have a series of values in a vector and some value are missing and
replaced with NA.
For example:
a <- c(27, 25, NA, NA, 24, 26, 27, NA, 26)
I would like to replace the NAs with the value taken from the previous
value that is non-NA. The output would be in this case:
27 25 25 25 24 26 27 27 26
Now I do that with a for loop, but I try to eliminate all the loops to
gain in
2008 Oct 22
3
Substitute problem
hello R users,
I didn't find a solution for a special problem.
I have two dataframes.
dataframe1:
X value row col ID
1 8.973498062 5512625 3460000 1
2 11.656658570 5501625 3464000 2
3 11.121777570 5495625 3473000 3
4 9.310465964 5508625 3477000 4
5 8.883483845 5515625 3496000 5
dataframe2:
X value
2017 Aug 02
3
Remove attribute from netcdf4 object
Dear all
For a model I need to combine several netCDF files into one (which works fine). For better overview I'd like to delete/remove some of the attributes. Is there a simple way doing this?
I'm using the package netcdf4, which creates an object of class(nc) = "ncdf4". It seems that for earlier versions of netcdf objects, there was the function att.delete.nc{RNetCDF}. But
2008 Nov 10
2
Make one vector from matrix comparison
Hello R-users,
I have a little problem.
I compare each row of a matrix with each row of another matrix.
testmat1 <- matrix(c(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16), nrow=4)
testmat2 <- matrix(c(1,2,3,5,5,6,7,8,9,10,11,12,13,14,15,16), nrow=4)
Both matrix differs in the last row.
Now I create a loop:
for (i in (1:4)){
for (j in (1:4)){
b <- (c(setequal(testmat1[j,],testmat2[i,])))
2011 Nov 15
2
points() colored by value
Hi R users,
I want to colored points by their value
for example:
x <- c(1,2,3,4)
y <- c(1,2,3,4)
z <- c(2,3,4,9)
y and x are coordinates
z is the value of the coordinates
points(x,y,col= rainbow(z))
something like that
But haven't found any solution at the moment.
Thanks.
Chris
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2015 Feb 05
3
Rcurl crash in R-devel
Hello,
I don't know if the problem originates from R-devel 3.2 or Rcurl itself.
I post this message to the R-devel list and to the author of RCurl
(duncan at r-project.org).
> library("RCurl")
Le chargement a n?cessit? le package : bitops
> print(sessionInfo())
R Under development (unstable) (2015-02-03 r67717)
Platform: x86_64-apple-darwin13.4.0 (64-bit)
Running under:
2011 Sep 10
1
dgamma in jags within r
I define priors in jags within r using a gamma distribution. I would
like to control the shape but I have problems. Any help will be usefull.
From help of dgamma
___________________
The Gamma distribution with parameters shape = a and scale = s has density
f(x)= 1/(s^a Gamma(a)) x^(a-1) e^-(x/s)
and rate=1/scale
From jags user manual
____________________
dgamma(r, mu) has a density of
2012 Mar 18
3
assign a value to an element
Un texte encapsul? et encod? dans un jeu de caract?res inconnu a ?t? nettoy?...
Nom : non disponible
URL : <https://stat.ethz.ch/pipermail/r-help/attachments/20120318/d68edf35/attachment.pl>
2013 Apr 12
1
Batch open netcdf files and get variables
Hi, I'm new to R. I have some daily soil moisture data for the year 1979 in netcdf format such as these
sm19790101.1.nc
sm19790102.1.nc
.
.
.
sm19791231.1.nc
I need to average a variable called "sm" to monthly resolution. I've done these
days = formatC(1:31, width=2, flag="0")
ncfiles = lapply(days, function(d){
filename = paste("sm197901", d,
2013 Apr 06
2
How to plot several years data with date information by months?
Hi, all
I have a medium sized data, 6 years. Each observation is a case with a date variable, such as '2004-08-02'.
Some of the months didn't occur a case.
I want to plot the 6 years data by month, and the Y_axis is the freqency of cases for each month, meaning 12*6=72 bars or points in the figure.
I though of a method, 1st, using the months function, then ploting. But I need to
2012 Apr 03
1
Package seems to be present but library don't find it
Hi,
I try to make my first package? The HelloWorld.R file is:
#### HelloWorld.R ####
#' showHello est une fonction R permettant d'afficher le message
#' "Hello World!" sur la console.
#' @title la fonction showHello()
showHello <-function(){
cat("Hello World!\n")
}
I use the following procedure to get the tar:
# set the working directory where the file is
2013 Jan 15
2
Month name in English, not R running language
When ploting a timeseries, the months are shown with abbreviation in the
current language of the system.
For example,
x <- seq(from=as.Date("2000-04-01"), length.out=100, by=1)
y <- rnorm(length(x), 5,2)
plot(x, y)
Show for me "avi mai jui jul" as I use R with French language localization.
I see in the Windows FAQ how to completely change the language of R, but
I
2013 Mar 14
2
how to import DNA sequences in R
Dear all,
I was wondering how to read DNA sequences in R, is there a specific
function and/or a specific package for that?
Thank you very much in advance,
Gian
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2013 Apr 11
1
Problem with caret
Hello all.
I am using method "bag()" to develop a bagging with my dataset.
When I do
bag( dataP, dataP$Score, B=10) I obtain this error:
error en bag.default(Score ~ ., data = dataP, B = 10) :
entrada en evaluacion: recursivo por defecto o problemas anteriores?
( in english, evaluating input: default recursive or previous problems?)
Any idea?
Thanks!
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2013 Mar 14
3
how to change "`Year_Month)201103`" into "Year_Month)201103" using R?
HI,
I have the pattern like "`Year_Month)201103`" I want to delete single quotes within double quetes.
I want to change it into "Year_Month)201103" , how to do it in r?
Thanks a lot.
Tammy
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2013 Mar 30
3
how to draw the math graph?
how can i draw the graph in R?
2005 Jun 10
1
problem with polr ?
I want to fit a multinomial model with logit link.
For example let this matrix to be analyzed:
male female aborted factor
10 12 1 1.2
14 14 4 1.3
15 12 3 1.4
(this is an example, not the true data which are far more complex...)
I suppose the correct function to analyze these data is polr from MASS library.
The data have been
2013 Jan 02
1
Package check using --as-cran
I use R 2.15.2 on MacosX 10.8.2
I have a problem checking for a package that I want to submit in CRAN.
When I check like that, no problem or warning are detected.
system("R CMD check '[path]/phenology'")
I create the .tar.gz package with that. The file phenology_3.43.tar.gz
is generated. I can install the package and it works.
system("R CMD build
2008 Sep 17
1
Re adout row and column of a matrix value
Hello R users,
I want to readout the row and column postion from a certain matrix value
into a csv file.
I have only found this syntax
"which(a == b, arr.ind = T)"
so I get
a = matrix
[,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8]
[1,] 1 1 2 2 2 1 1 2
[2,] 1 2 3 3 3 4 4 3
[3,] 3 3 3 5 5 6 5 4
[4,] 4 4 4 3