Displaying 20 results from an estimated 5000 matches similar to: "help on establishing a matrix"
2007 Oct 16
1
error in sample ()
I am trying to get a random matrix based on an original matrix called
disperser.mx, with dimensions 30x73
When I write the following code:
>scramble = sample (disperser.mx)
>newmat = matrix(scramble, nrow=30)
I get the following warning message and a very weird matrix with 30 rows but
only 3 columns shown below:
Warning message:
data length [73] is not a sub-multiple or multiple of the
2008 Feb 08
1
FW: merge multiple csv files
Dear list:I have a folder that contains more than 50 csv files labels sequencially like sample01.csv to sample50.csv. for each file the first 5 rows are descriptive of the data collected (useful but not needed in data merge). each file then start the data at row 6 and have 2 variables x and y. In order to know which file one observation is from, I'd like to have a new variable location, for
2006 Feb 21
2
rotated labels in barplot with beside=T and multiple groups
I have a data set that I display using barplot. I don't know what you
call it, but when I look at it, it looks like this:
> lsu
(0,0.1] (0.1,0.2] (0.2,0.3] (0.3,0.4] (0.4,0.5] (0.5,0.6]
A 0.052631579 0.000000000 0.000000000 0.000000000 0.000000000 0.000000000
B 0.000000000 0.000000000 0.001007049 0.003021148 0.000000000 0.000000000
E 0.200000000 0.000000000
2005 Sep 28
1
boxplot and xlim confusion?
I have some code as shown below. Basically, I would like three
boxplots to be set next to each other with no ylabels on the two
"inner" plots, and I want the same x axis range on all three. However,
it seems like boxplot does not respect the xlim setting. I've tried
the various ways I thought would work (par, boxplot(...xlim=)) but
none of them seem to work. I then tried plot.window,
2013 Jul 04
0
[LLVMdev] round() vs. rint()/nearbyint() with fast-math
On Fri, Jun 21, 2013 at 5:11 PM, Erik Schnetter <schnetter at cct.lsu.edu>wrote:
> On Fri, Jun 21, 2013 at 7:54 AM, David Tweed <david.tweed at arm.com> wrote:
>
>> | LLVM does not currently have special lowering handling for round(), and
>> I'll propose a patch to add that, but the larger question is this: should
>> fast-math change the tie-breaking
2011 Jun 19
4
For loop by factor.
I have a data.frame as follows:
a 3
a 2
a 1
b 3
b 2
c 2
c 3
c 1
c 1
Each factor (a, b, c) should be monotonically decreasing, notice that factor
'c' is not.
I could use some help to figure out how to form a logical structure (mostly
just syntax), that will check each 'next value' for each factor to see if it
is less than the previous value. If it is less than the
2013 Jul 05
1
[LLVMdev] round() vs. rint()/nearbyint() with fast-math
----- Original Message -----
>
> On Fri, Jun 21, 2013 at 5:11 PM, Erik Schnetter <
> schnetter at cct.lsu.edu > wrote:
>
>
>
>
>
>
> On Fri, Jun 21, 2013 at 7:54 AM, David Tweed < david.tweed at arm.com >
> wrote:
>
>
>
>
>
>
> | LLVM does not currently have special lowering handling for round(),
> | and
>
2012 Oct 26
1
Creating a correlation matrix from a vector
I'm looking to create a correlation matrix, but I have already obtained the
correlations, which are stored in a vector. (Basically, I'm running a
simulation which requires a correlation matrix, but I am simulating the
various correlations.)
My aim is to create a function that can take the vector, and fit the values
into their respective locations in a correlation matrix. (The correlations
2013 Jun 21
2
[LLVMdev] round() vs. rint()/nearbyint() with fast-math
On Fri, Jun 21, 2013 at 7:54 AM, David Tweed <david.tweed at arm.com> wrote:
> | LLVM does not currently have special lowering handling for round(), and
> I'll propose a patch to add that, but the larger question is this: should
> fast-math change the tie-breaking behavior of
> | rint/nearbyint/round, etc. and, if so, should we make a specific effort
> to
> have all
2010 Feb 28
1
"Types" of missingness
Dear R-List,
My questions concerns missing values. Specifically, is is possible to
use different "types" of missingness in a dataset and not a
one-size-fits-all NA?
For example, data may be missing because of an outright refusal by a
respondent to answer a question, or because she didn't know an answer,
or because the item simply did not apply. In later analysis it is
sometimes
2002 Jul 03
3
[Bug 333] X11 forwarding not working in OpenSSH 3.4p1
http://bugzilla.mindrot.org/show_bug.cgi?id=333
------- Additional Comments From stevesk at pobox.com 2002-07-04 05:41 -------
i will guess configure did not find an xauth when
it was built ($PATH is irrelevant here). please
verify.
see $HOME/.ssh/rc example in sshd.8 which can be used
as a workaround in this case.
djm: autoconf-2.53 exposes a bug for xauth path detection.
------- You
2014 Jul 12
2
lpxelinux hangs under Intel Boot Agent 1.3.81 (2.1 build 089) on Dell Optiplex 990 BIOS A16
On Sat, Jul 12, 2014 at 3:15 PM, Alexander Perlis <aperlis at math.lsu.edu> wrote:
> On 07/11/2014 09:39 PM, Gene Cumm wrote:
>>
>> With everything else from 6.03-pre18, try this binary (xzip-compressed):
>> http://www.zytor.com/~genec/lpxelinux-6.03p18g3.tgz
>
>
> It works! Thanks!
>
> Anything else I should do/report on this hardware before I upgrade the
2001 Oct 09
3
Unlisting while preserving object types?
Hi
A toy example is probably the least ambiguous way of explaining what I'm
trying to do.
> library(ts)
> zz<-list(a=rnorm(100),b=rt(100,3))
> zz.spec<-lapply(zz,spectrum,plot=F)
> summary(zz.spec)
Length Class Mode
a 15 spec list
b 15 spec list
I'm looking for an elegant way to fetch components of the sub-lists a and b
of zz.spec;
e.g. to make a matrix
2005 May 05
2
efficient filtering of matrices
I was wondering if someone can tell me the best way to search through a
matrix and choose certain rows (based on certain conditions) to put into a
separate matrix.
What I have tried so far is very slow for a large dataset I'm working with.
e.g., I have this piece of code to create a new matrix (newmat) based on my
filtering conditions. Do I need to do this kind of thing where I keep
2005 Aug 31
5
"best" c++ matrix library?
Hi folks,
I am planning to write some more time-consuming matrix manipulations
in c++. What is the experience with the existing c++ matrix
libraries? Do you have some recommendations? Are some libraries more
compatible with R than the others?
All suggestions welcome!
Best,
Ott
2004 Feb 17
1
varimax rotation in R
Hi everyone-
I have used several methods to calculate principal components rotated using the varimax procedure. This is simple enough. But I would like to calculate the % of variance explained associated with each PC before and after rotation.
factanal returns the % of variance explained associated with each PC but I cannot seem to get it to change after rotation.
Many thanks for your
2014 Jul 12
2
lpxelinux hangs under Intel Boot Agent 1.3.81 (2.1 build 089) on Dell Optiplex 990 BIOS A16
On Fri, Jul 11, 2014 at 5:49 PM, Alexander Perlis <aperlis at math.lsu.edu> wrote:
> On 07/11/2014 04:31 PM, H. Peter Anvin wrote:
>>
>> On 07/11/2014 10:17 AM, Alexander Perlis wrote:
>>>
>>>
>>> Trace shows that lpxelinux.0 6.03-pre18 is transferred, and after that
>>> there is only ARP traffic: a "gratuitous" ARP announcement by
1999 Mar 11
2
AFS on samba 2.0.2
>Ken, did you ever get afs support compiled into 2.0.2? I am in exactly
>the same boat as you are (were), where samba 1.9.18 was working great, but
>2.0.2 wouldn't compile with afs support. I too tried to copy the relavant
>parts of the makefile over, but ended up with the same errors as you did.
>Then I found your post to the samba list, and I'm hoping that you've
2014 Jul 12
1
lpxelinux hangs under Intel Boot Agent 1.3.81 (2.1 build 089) on Dell Optiplex 990 BIOS A16
On Sat, Jul 12, 2014 at 3:38 PM, Alexander Perlis <aperlis at math.lsu.edu> wrote:
> On 07/12/2014 02:24 PM, Gene Cumm wrote:
>>
>> On Sat, Jul 12, 2014 at 3:15 PM, Alexander Perlis <aperlis at math.lsu.edu>
>> wrote:
>>>
>>> On 07/11/2014 09:39 PM, Gene Cumm wrote:
>>>>
>>>>
>>>> With everything else from
2013 Jan 29
1
Fwd: Minor syslinux menu system bug report
-------- Original Message --------
From: Alexander Perlis <aperlis at math.lsu.edu>
Sent: Mon Jan 28 18:21:18 PST 2013
To: hpa at zytor.com
Subject: Minor syslinux menu system bug report
Sorry for the intrusion, I know authors dislike receiving direct e-mail,
but I couldn't see bug report submission info at the syslinux website.
This bug report is for syslinux 4.05 and affects both