Displaying 20 results from an estimated 300 matches similar to: "win2k memory problem with merge()'ing repeatedly (long email)"
2006 May 11
4
data input strategy - lots of csv files
Good morning,
I have currently 63 .csv files most of which have lines which look like
01/06/05,23445
Though some files have two numbers beside each date. There are
missing values, and currently the longest file has 318 rows.
(merge() is losing the head and doing runaway memory allocation - but
thats another question - I'm still trying to pin that issue down and
make a small repeatable
2017 Dec 25
3
plot representation of calculated value known to be 7.4
Dear friends - merry Christmas and thanks a lot for much help during the
year!
In the example below I fail to understand how the calculated value pH is
represented in a simple plot - also included. The calculations are
useful in practice and likely to be right in principle but I cannot see
how this occurs: why a calculated value of 7.4 known as numeric is not
simply plotted as such. It
2017 Dec 25
0
plot representation of calculated value known to be 7.4
Dear friends - copy paste missed
SID <- c() before the first loop - sorry
BW Troels
Den 25-12-2017 kl. 19:12 skrev Troels Ring:
>
> Dear friends - merry Christmas and thanks a lot for much help during
> the year!
>
> In the example below I fail to understand how the calculated value pH
> is represented in a simple plot - also included. The calculations are
> useful
2017 Dec 26
2
plot representation of calculated value known to be 7.4
Thanks a lot - formatting the ordinate as ylim=c(4,10) before plotting
pH also removed the problem, and options(digits=10) confirmed that pH
was not all exactly 7.4 - as I knew. Still I wonder just why R chooses
to plot(ATOT,pH) as shown with repeated "7.4" instead of some more
detailed representation. Thanks a gain and happy New Year!
Troels
Den 26-12-2017 kl. 01:03 skrev Bert
2004 Nov 22
2
optimize in very small values
I hope you will forgive me this simple question on titration.
I'm trying to find very small values from the algorithm below, which I
believe is
correctly formatted, and the constants are also correct. When SID goes over
ATOT, fitted vales are
much too low compared to the literature. I guess I must be using optimize
in a wrong way but cannot find out how to improve it. I'm on windows, R
2006 May 20
1
merge problem... extra lines appear in the presence of NAs
Good morning!
I've searched the docs etc... Am I doing something wrong or is this a bug?
I'm doing a merge of two dataframes and getting extra rows in the
resulting dataframe - the dataframes being merged might have NAs...
count <- 10
nacount <- 3
a1 <- as.data.frame(as.Date("2005-06-01")+0:(count-1))
names(a1) <- "mdate"
a1$value <- runif(count)
2009 Jul 10
3
strange strsplit gsub problem 0 is this a bug or a string length limitation?
I was working with the rmetrics portfolioBacktesting function and dug into
the code to try to find why my formula with 113 items, i.e. A1 thru A113,
was being truncated and I only get 85 items, not 113.
Is it due to a string length limitation in R or is it a bug in the strsplit
or gsub functions, or in my string?
I'd very much appreciate any suggestions
============Input script:
2015 Mar 02
2
Re: [virt-tools-list] libvirt/virt-manager source integration with xen
On 03/02/2015 10:55 AM, Wayne Mills wrote:
> Hi,
>
> I built and installed Xen 4.5.0 from source, on top of Ubuntu 14.04.2, using
> "make world" and "make install" targets. I then installed latest virt-manager
> from pre-built packages. After bringing up virt-manager I attempt to connect
> to Xen hypervisor and got:
>
> unable to connect to
2008 Mar 11
1
How to generate a vector of counts i.e. the number of rows that are contiguous
Hi,
I have a 3 columns data and need to generate a vector of counts. These
counts are the number of rows that are contiguous. It looks easy for manual
counting, but to turn it algorithmic really split my head.
For example, 11 (i.e. 18004 to 180014), 1 (i.e., 18017), 7 (i.e., 18060 to
18064)
18004 10314568 0.5205757
18005 10333837 0.5135572
18006 10566333 0.5111271
18007 10566624 0.8196611
2015 Mar 02
1
Re: [virt-tools-list] libvirt/virt-manager source integration with xen
Thanks Cole, unfortunately I'm a n00b in this area so your response just
raised many more questions for me :/
* what are the config file names for libxl, libvirt and virt-manager
* where are they located in the respective source trees
* are the build flags defined in those config files?
* libxl is part of xen 4.5.0 distro (xen/tools/libxl after untarring). But
no config file is in
2015 Mar 03
3
Re: [virt-tools-list] libvirt/virt-manager source integration with xen
I downloaded and untarred the deb package and grepped for 'configure', but
none of the hits were configure commands. Is there a better way to find it?
Wayne
On Mon, Mar 2, 2015 at 3:08 PM, Cole Robinson <crobinso@redhat.com> wrote:
> On 03/02/2015 01:39 PM, Wayne Mills wrote:
> > Thanks Cole, unfortunately I'm a n00b in this area so your response just
> >
2011 Oct 20
1
stop R from rounding
Hello,
I have a column in a data frame that need to be 10 digits long. As such:
Decimal.Year
1 1994.25997
2 1994.26020
However, R keeps rounding the digits. As such:
Decimal.Year
1 1994.260
2 1994.260
*Is there any way to stop this from happening?*
Here is how I created the data frame:
x <- read.table('bats_1994_CTD.txt')
colnames(x) <-
2015 Mar 02
0
Re: [virt-tools-list] libvirt/virt-manager source integration with xen
On 03/02/2015 01:39 PM, Wayne Mills wrote:
> Thanks Cole, unfortunately I'm a n00b in this area so your response just
> raised many more questions for me :/
>
> * what are the config file names for libxl, libvirt and virt-manager
> * where are they located in the respective source trees
> * are the build flags defined in those config files?
> * libxl is part of xen 4.5.0
2008 Jul 20
2
Erro: cannot allocate vector of size 216.0 Mb
Please,
I have a 2GB computer and a huge time-series to embedd, and i tried
increasing memory.limit() and memory.size(max=TRUE), but nothing.
Just before the command:
> memory.size(max=TRUE)
[1] 13.4375
> memory.limit()
[1] 1535.875
> gc()
used (Mb) gc trigger (Mb) max used (Mb)
Ncells 209552 5.6 407500 10.9 350000 9.4
Vcells 125966 1.0 786432 6.0 496686 3.8
2008 Sep 24
2
cannot allocate memory
I am getting "Error: cannot allocate vector of size 197 MB".
I know that similar problems were discussed a lot already, but I
didn't find any satisfactory answers so far!
Details:
*** I have XP (32bit) with 4GB ram. At the time when the problem
appeared I had 1.5GB of available physical memory.
*** I increased R memory limit to 3GB via memory.limit(3000)
*** I did gs() and got
2003 Sep 17
2
help jeremy
* compiled from cvs, i am trying call ip phones in callmanager 3.2
10.17.0.2 is my callmanager
i noticed from network dumps that instead of sending rtp to the ip phone, * sends it to 10.17.0.2!
thereby causing no audio from * to ip phone. audio from ip phone to * is ok.
only callmanager calls fail. netmeeting works ok...
here is the debug, thanks for any info
~kelvin
H323 debug enabled
--
2002 Oct 11
1
growing process size in simulation
I came across this in a simulation I ran under 1.6.0: If I do something
like
R> x <- rnorm(10)
R> rval <- NULL
R> for(i in 1:100000) rval <- t.test(x)$p.value
then the process size remains at about 14M under 1.5.1, but it seems to
be almost linearly growing up to more than 100M under 1.6.0.
I know that the above simulation is nonsense, but it was the simplest I
could come up
2001 Nov 26
2
R not giving memory back to system?
This might be because I didn't get it right, but; I thought R would
release memory back to the system as (big) objects get removed?
Here is my platform (with 1Gb of RAM):
platform sparc-sun-solaris2.8
arch sparc
os solaris2.8
system sparc, solaris2.8
status
major 1
minor 3.1
year 2001
month 08
day 31
language R
A little example:
Start a new section of R, with
2007 Jun 26
1
Memory Experimentation: Rule of Thumb = 10-15 Times the Memory
dear R experts:
I am of course no R experts, but use it regularly. I thought I would
share some experimentation with memory use. I run a linux machine
with about 4GB of memory, and R 2.5.0.
upon startup, gc() reports
used (Mb) gc trigger (Mb) max used (Mb)
Ncells 268755 14.4 407500 21.8 350000 18.7
Vcells 139137 1.1 786432 6.0 444750 3.4
This is my baseline. linux
2009 Apr 26
6
Memory issues in R
How do people deal with R and memory issues?
I have tried using gc() to see how much memory is used at each step.
Scanned Crawley R-Book and all other R books I have available and the FAQ
on-line but no help really found.
Running WinXP Pro (32 bit) with 4 GB RAM.
One SATA drive pair is in RAID 0 configuration with 10000 MB allocated as
virtual memory.
I do have another machine