Displaying 20 results from an estimated 7000 matches similar to: "increase memory limit in R"
2008 Oct 30
1
How to increase iteration limit for lmer()?
Dear R users:
I am running lmer(), and I had the following warning message:
"In mer_finalize(ans): iteration limit reached without convergence (9)
What is the default limit for lmer()? And how do I increase the limit?
Many thanks,
Julia
--
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2008 Oct 10
4
how to store lme/lmer fit result
Dear R users,
I am building a hierarchical model on a large data set. It can take quite
some time to finish one fit, I was just wondering whether it is possible to
store the fit object (the result) to a file for later (offline) analysis.
thanks
Julia
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2009 Jul 21
4
how to transform m/d/yyyy to yyyymmdd?
Hello,
I have a set of data that has a Date column looks like this:
12/9/2007
12/16/2007
1/1/2008
1/3/2008
1/12/2008
etc.
I'd like the date to look something like the follow (so that I could sort by
date easily).
20071209
20071216
20080101
20080103
20080112
How to do it? Thank you very much
Julia
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2008 Sep 11
3
Calculate mean/var by ID
Hello,
I have a data set that looks like this.
ID value
111 5
111 6
111 2
178 7
178 3
138 3
138 8
138 7
138 6
.
.
.
I'd like to calculate the mean and var for each object identified by the ID.
I can in theory just loop through the whole thing..., but is there a easier
way/command which let me calculate the mean/var by ID?
Thanks,
Julia
--
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2009 Jun 17
3
how to read in only some columns of a data file
Hello,
I have a data file (.csv) that has a size of about 2.6 GB. I am not able to
read in the whole data set because of the memory limit. I actually only need
some columns (3 columns) of the data set, is there a way to read in
specified columns?
I am using windows.
Thanks,
Julia
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2009 Jun 01
2
how to checking whether elements of a vector changed or not.
Hello,
I have a vector:
x <- c("A", "A", "A", "B", "A", "A", "C")
I'd like to compare each of elements of vector x from its previous element
(except for the 1st element which does not have previous element). So I'd
like to get a vector y (of same length) that looks something like
(0, 0, 0, 1, 1, 0, 1) or
(F, F, F,
2009 Jan 12
3
roll weekly data to monthly level
Dear R users:
I have a data set that looks something like this:
ID time y
1 2/01/2008 4
1 2/09/2008 12
1 9/01/2008 8
2 1/06/2008 3
2 3/01/2008 4
2 3/09/2008 9
2 6/03/2008 4
3 1/02/2008 3
3 1/10/2008 8
3 2/02/2008 7
3 2/10/2008 3
I'd like to sum up the weekly data to the monthly level, so that it looks
something
2009 Feb 11
3
two scatter plots in one
Dear R users,
I need to compare two scatter plots,
plot(x1, y1)
plot(x2, y2)
and would like to plot them in the same figure. How do I do it?
Thank you.
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2008 Sep 30
1
Adding legends to a plot
Hello,
I have a time series plot drawn using 3 different colored lines, each line
corresponds to different category group. I'd like to put legends on the
plot. I am using "legend" to do this, however, I can either specify lty or
col in legend. Will I be able to do the following in the legend box: a solid
black line then g1, a solid red line then g2, a solid blue line then g3?
2009 May 29
1
frequence of patterns in a vector
Dear R users,
Suppose I have a vector that consists of characters like ABC, A02, RCA,
etc., and there are about 700 of possible characters. For example,
x <- c("ABC", "ABC", "ABC", "A02", "ABC", "RCA", "ABC", "ABC")
I'd like to get a frequency matrix that looks something like this:
ABC 6
A02 1
RCA 1
I
2009 Sep 24
1
multinormial runs tests?
Dear R users,
I would like to test the randomness in a series of N values (N>=2). I know
that runs.test works for dichotomous factor only:
x <- rep(c(1,2), 50)
runs.test(factor(x))
However it doesn't work for series that can take any N values (N>2):
x <- rep(c(1,2,5,4),50)
runs.test(factor(x))
Error in runs.test(factor(x)) : x does not contain dichotomous data
Are there any R
2008 Oct 08
2
detect repeated number in a vector
Dear R users,
I have this vector that consists numeric numbers. Is there a command that
detects the repeated numbers in a vector and returns the index of the
repeated numbers (or the actual numbers)? For example, v <- c(3,4,5,7,4).
The command would return me index 2 and 5 (or the repeated number, 4).
Thank you very much,
Julia
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2009 Jul 31
1
how to calculate time interval between dates
Dear R users:
I have a vector of dates as follows:
t <- c("2007-01-05", "2007-05-14", "2007-12-28", "2008-01-09", "2008-04-24",
"2009-02-14")
I'd like to calculate number of days between those dates (time interval).
How to do it?
Thank you,
Julia
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2008 Aug 21
0
How to increase the iteration limit in lmer
Hi,
I have this message:
Warning message:
In mer_finalize(ans, verbose) :
iteration limit reached without convergence (9)
How to increase this limit?
I try control=list(maxit=1000) I try maxIter and it dont work.
Any idea
Thanks
Ronaldo
--
Opportunities are usually disguised as hard work, so most people don't
recognize them.
--
> Prof. Ronaldo Reis J?nior
| .''`.
2008 Aug 17
1
Allocated Memory Warnings in Vista 32 bit with 4 GB (PR#12557)
Hello
I am running Windows Vista 32 with 4 GB (installed, though Windows of cours=
e only recognizes 3326 MB, as reported by Windows "My Computer")
I am running R 2.7.1
I was trying to read in a comma delimited single column CSV file, assign th=
at file to a variable ("data") and then extract a sample (assigned to "part=
ial"). I was getting memory allocation
2012 Feb 08
2
Memory allocation problem (again!)
Dear all, I know this problem was discussed many times in forum, however
unfortunately I could not find any way out for my own problem. Here I am
having Memory allocation problem while generating a lot of random number.
Here is my description:
> rnorm(50000*6000)
Error: cannot allocate vector of size 2.2 Gb
In addition: Warning messages:
1: In rnorm(50000 * 6000) :
Reached total allocation
2012 Mar 02
3
Memory issue. XXXX
Hi everyone,
Any ideas on troubleshooting this memory issue:
> d1<-read.csv("arrears.csv")
Error: cannot allocate vector of size 77.3 Mb
In addition: Warning messages:
1: In class(data) <- "data.frame" :
Reached total allocation of 1535Mb: see help(memory.size)
2: In class(data) <- "data.frame" :
Reached total allocation of 1535Mb: see
2009 Jun 15
3
lack of memory for logistic regression in R?
Hi all,
I am getting the following error message:
> mymodel = glm(response ~ . , family=binomial, data=C);
Error: cannot allocate vector of size 734.2 Mb
In addition: Warning messages:
1: In array(0, c(n, n), list(levs, levs)) :
Reached total allocation of 1535Mb: see help(memory.size)
2: In array(0, c(n, n), list(levs, levs)) :
Reached total allocation of 1535Mb: see help(memory.size)
3:
2009 Nov 10
3
Error: cannot allocate vector of size...
I'm trying to import a table into R the file is about 700MB. Here's my first
try:
> DD<-read.table("01uklicsam-20070301.dat",header=TRUE)
Error: cannot allocate vector of size 15.6 Mb
In addition: Warning messages:
1: In scan(file, what, nmax, sep, dec, quote, skip, nlines, na.strings, :
Reached total allocation of 1535Mb: see help(memory.size)
2: In scan(file, what,
2009 Apr 22
3
Merging data frames, or one column/vector with a data frame filling out empty rows with NA's
Hello
I have two data frames, SNP4 and SNP1:
> head(SNP4)
Animal Marker Y
3213 194073197 P1001 0.021088
1295 194073197 P1002 0.021088
915 194073197 P1004 0.021088
2833 194073197 P1005 0.021088
1487 194073197 P1006 0.021088
1885 194073197 P1007 0.021088
> head(SNP1)
Animal Marker x
3213 194073197 P1001 2
1295 194073197 P1002 1
915 194073197