Displaying 8 results from an estimated 8 matches for "5e4".
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54
2011 Sep 29
1
efficient coding with foreach and bigmemory
...preparation for scaling up to a very large matrix. It
seems to be working ... at this small scale, anyway. But, surely there is
a better way to do it than what I present here. I am particularly
concerned about efficiency because when I did a little experimenting with
foreach and rnorm using 5e4 records, things seemed to get slow in a hurry
(ha!). I would appreciate any suggestions you could offer.
I'm using R for Windows 2.13.0, and my memory.limit() in R is 2GB
(32-bit).
Thanks!
Jean
=====
> system.time(look <- rnorm(5e4))
user system elapsed
0.02 0.00 0.0...
2001 Nov 26
0
debugging R-devel on WinNT (was RE: zlib location)
.../main, src/gnuwin32, src/gnuwin32/graphapp, and src/gnuwin32/front-ends),
but still get the same thing.
Also, as R starts, I get a bunch of dialog boxes that complained about DLL
relocated. Is this normal?
If I just type "c" and run Rgui, and issue the command
"La.svd(matrix(runif(5e4), 5e2, 1e2))", I get a few more dialog boxes, one
saying "Invalid address specified to RtlFreeHeap(9f0000, 1efde80)", another
saying "HEAP(Rgui.exe)", and a SIGTRAP is generated.
I did one more (crazy? stupid?) thing: I replaced the lapack.c in R-devel
(dated Nov. 14, 200...
2012 Jun 25
2
Fast Kendall's Tau
Hello.
Has any further action been taken regarding implementing David Simcha's fast Kendall tau code (now found in the package pcaPP as cor.fk) into R-base? It is literally hundreds of times faster, although I am uncertain as to whether he wrote code for testing the significance of the parameter. The last mention I have seen of this was in 2010
2005 Jan 20
2
Creating a custom connection to read from multiple files
Hello,
is it possible to create my own connection which I could use with
read.table or scan ? I would like to create a connection that would read
from multiple files in sequence (like if they were concatenated),
possibly with an option to skip first n lines of each file. I would like
to avoid using platform specific scripts for that... (currently I invoke
"/bin/cat" from R to create a
2004 Dec 16
8
counting numbers without replicates in a vector
Hi,
I am just wondering if there is an easy way to count
in a numeric vector how many numbers don't have
replicates.
For example,
a=c(1,1,2,2,3,4,5), how can I know there are three
numbers (3, 4 and 5) without replicates?
Thank you!
Jun
=====
2011 Feb 17
2
amount of data R can handle in a single file
Dear Sir/Madam,
I would like to know what is the maximum number of observations a
single file must have when using R. I am asking this because am trying
to do research on banking transactions and i have around 49million
records. Can R handle this? Advise with regard to this.
Mark Nasila
Quantitative Analyst
CBS Risk Management
Personal Banking
7th Floor, 2 First Place,
Cnr
2007 Apr 30
0
[LLVMdev] Boostrap Failure -- Expected Differences?
...c_reg_base_value
> 0000010c l O .bss 00000001 memory_modified.b
> 00003f00 l F .text 0000005b memory_modified_1
> 0000000c l O .bss 00000004 old_reg_base_value
> 000005d5 l O .rodata 0000000f .str8
> -000005c1 l O .rodata 00000014 __FUNCTION__.23098
> -000005e4 l O .rodata 00000017 __FUNCTION__.22989
> +000005c1 l O .rodata 00000014 __FUNCTION__.23005
> +000005e4 l O .rodata 00000017 __FUNCTION__.22896
> 00004e90 l F .text 000003ca write_dependence_p
> -0000060f l O .rodata 00000013 __FUNCTION__.22630
> -00000622 l...
2007 Apr 27
2
[LLVMdev] Boostrap Failure -- Expected Differences?
The saga continues.
I've been tracking the interface changes and merging them with
the refactoring work I'm doing. I got as far as building stage3
of llvm-gcc but the object files from stage2 and stage3 differ:
warning: ./cc1-checksum.o differs
warning: ./cc1plus-checksum.o differs
(Are the above two ok?)
The list below is clearly bad. I think it's every object file in
the