Displaying 20 results from an estimated 27 matches for "4x2".
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0x2
2009 Jun 23
1
How to exclude insignificant intercepts using "step" function
...-1 + x1 +x2 (or I guess y ~ 0 + x1 + x2). If I include -1 in the
model designation then no intercept is returned for grps B and C. Am I not
using step properly? Or perhaps there is an alternative methodology I could
use. Any help appreciated.
# y = x1 + x2 for grp A
# y = 2 + 2x1 + 4x2 for grp B
# y = 3 + 2x1 + 4x2 + 6x1x2 for grp C
ind <- matrix(runif(200), ncol=2, dimnames=list(c(), c("x1","x2")))
d1 <- data.frame(ind, y=ind[,"x1"]+ind[,"x2"]+rnorm(100,0,0.05),
grp=rep("A",100))
d2 <- data.frame(ind,
y=2+2*ind...
2011 Apr 28
5
fisher exact for > 2x2 table
I'm using fisher.exact on a 4x2 table and it seems to work.
Does anyone know exactly what is going on? I thought fisher.exact is only
for 2x2 tables.
Note: I can't use chi-squared because I have a couple of cells with 0 and <
5 observations.
--
View this message in context: http://r.789695.n4.nabble.com/fisher-exact...
2009 Jun 17
2
Re gression by groups questions
...idea for a multivariate data set. The
code below shows a multivariate dataset which I hope to fit by group.
# The code below creates a data.frame comprising three marginally noisy
planes. I want to perform a
# regression on each based on the grp factor.
# y = x1 + x2 for grp A
# y = 2 + 2x1 + 4x2 for grp B
# y = 2 + 2x1 + 4x2 + 6x1x2 for grp C
ind <- matrix(runif(100), ncol=2, dimnames=list(c(), c("x1","x2")))
d1 <- data.frame(ind, y=ind[,"x1"]+ind[,"x2"]+rnorm(100,0,0.1), grp=rep("A",
100))
d2 <- data.frame(ind, y=2+2*ind[,"...
2009 May 14
1
Problem with viewports, print.trellis and more/newpage
Dear R-users,
I have got the following problem. I need to create 4x2 arrays of
xyplot's on several pages. The plots are created within a loop and
plotted using the print function. It seems that I cannot find the proper
grid syntax with my viewports, and the more/newpage arguments.
The following script is a simplification but hopefully will suffice to
illust...
2009 Jun 22
1
Error when using step
...unique ID.
Q1. The code below creates a data.frame comprising three marginally noisy
surfaces. The code below fails when I use step in a function but summary
seems to show the model fits are legitimate. Any ideas on what I'm doing
wrong?
# y = x1 + x2 for grp A
# y = 2 + 2x1 + 4x2 for grp B
# y = 3 + 2x1 + 4x2 + 6x1x2 for grp C
ind <- matrix(runif(200), ncol=2, dimnames=list(c(), c("x1","x2")))
d1 <- data.frame(ind, y=ind[,"x1"]+ind[,"x2"]+rnorm(100,0,0.05),
grp=rep("A",100))
d2 <- data.frame(ind,
y=2+2*ind...
2007 Jun 20
14
Z-Raid performance with Random reads/writes
Given a 1.6TB ZFS Z-Raid consisting 6 disks:
And a system that does an extreme amount of small /(<20K) /random reads
/(more than twice as many reads as writes) /
1) What performance gains, if any does Z-Raid offer over other RAID or
Large filesystem configurations?
2) What is any hindrance is Z-Raid to this configuration, given the
complete randomness and size of these accesses?
Would
2010 Apr 22
1
Multicolor main title in a plot or mtext
Dear R-users, the problem I'm facing today is to write a
multicolor main title in a plot.
I would like to have 3/4 colors to help people in the
audience to visually realize what is what in a 4x2 plot array
On top of each plot I would like to have two lines.
The 1st line will indicate what is plotted
The 2nd line will indicate a a reference
Graphically speaking I would like a result similar to this (simplified) one:
par(mfrow=c(2,4))
for(aux in 1:4){
plot(1,1)
mtext("1st treatm"...
2012 Mar 28
6
How to get all possible combinations?
Dear all, suppose I have a vector with elements as:
Vec <- c(2,3,4,5,6)
Now I want to have all possible combination of length 3 using those
elements and without any repetition. Like, I want to have 1
possibility like 2-3-4 but not 3-2-4.
Can somebody guide me how to achieve that in R?
Thanks for your help.
2008 Aug 05
4
LIDAR Problem in R (THANKS for HELP)
...new.grid, v.fit, nmax=40)? to appear an Error massage: Error in eval(expr,
envir, enclos) : oggetto "X" non trovato
I send you a report and attach the image to explain better.
all procedure is write in R-software and to improve in gstat . The number of
points of GROUND data-set (4x2 km) is 5,459,916.00. The random sub- set from
original data-set is 10000 (R code is: > samplerows
<-sample(1:nrow(testground),size=10000,replace=FALSE) > subground
<-testground[samplerows,])
1. Fig 1 - Original data-set Histogram: show two populations;
2. Fig 2 ? origi...
2005 Sep 30
0
voip alarm circuit
Hi,
I've been trying to get my ADT alarm panel ( Lynx24R ) to work with asterisk
and sipura SPA 2000. So far the alarm company has been recieveing lot of
undefined events.
Someone suggested I should change communication format to 4x2
instead of default Ademco CID. Unfortantely ADT is reluctant to hand
me over the information I need. I can change the communication format
on the panel since I already have the manual but I need different alarm
reciever's dial number, etc... which ADT says they have but so far have not
given...
2018 Apr 29
1
formating DVR-RW
On Sun, 29 Apr 2018, Thomas Schmitt wrote:
> Michael Hennebry wrote:
>> The last time I use it [K3B], , it crapped out after writing,
>> but before finalizing.
>
> Sounds like a growisofs problem.
>
> If it was with unformatted DVD-R or DVD-RW media, does it resemble this
> error ?
> https://bugzilla.redhat.com/show_bug.cgi?id=810483
>
> Any message from
2016 Sep 01
2
[Bug 97568] New: read pixels of MSAAx8 surface stretched horizontally/vertically
https://bugs.freedesktop.org/show_bug.cgi?id=97568
Bug ID: 97568
Summary: read pixels of MSAAx8 surface stretched
horizontally/vertically
Product: Mesa
Version: unspecified
Hardware: x86-64 (AMD64)
OS: Linux (All)
Status: NEW
Severity: normal
Priority: medium
2020 Aug 19
2
Intel AMX programming model discussion.
...intel.com>; Lu, Hongjiu <hongjiu.lu at intel.com>
Subject: Re: [llvm-dev] Intel AMX programming model discussion.
Hi, Andy,
I don't quite understand everything that's going on here. Could we model this as:
1. Define a collection of register classes, one for 2x4 tiles, one for 4x2 tiles, etc. each populated with a set of tile registers. Registers can have aliasing relationships (instead of worrying of any kind of subregister/superregister relationships -- these won't be useful anyway).
2. Define the tile-configuration instructions so that they implicitly define all of...
2020 Aug 18
2
Intel AMX programming model discussion.
...the hardware details to prevent this. We'll also want a diagnostic that lets the user know when this has happened.
When the tile configuration is set, the shape of each tile is locked in, so the individual tile registers aren't interchangeable at that point. If a function needs 2x4 tiles, 4x2 tiles, and 4x4 tiles, the configuration needs to be set with this in mind. The shape isn't explicit in every instruction and intrinsic. It must be deduced. And again, we'll need a way to tell the user when efficient allocation can't be done. In practice, I don't expect any function...
2020 Aug 19
3
Intel AMX programming model discussion.
...u.lu at intel.com><mailto:hongjiu.lu at intel.com>
Subject: Re: [llvm-dev] Intel AMX programming model discussion.
Hi, Andy,
I don't quite understand everything that's going on here. Could we model this as:
1. Define a collection of register classes, one for 2x4 tiles, one for 4x2 tiles, etc. each populated with a set of tile registers. Registers can have aliasing relationships (instead of worrying of any kind of subregister/superregister relationships -- these won't be useful anyway).
2. Define the tile-configuration instructions so that they implicitly define all of...
2017 Jun 01
0
Post for R
Hi Carrie,
You may have a problem with this if some subsets are empty:
L3<-lapply(split(df,cut(df$max,seq(0,1,by=0.01))),
split,cut(df$submax,seq(0,0.2,by=0.02)))
Jim
On Thu, Jun 1, 2017 at 12:48 PM, carrie wang via R-help
<r-help at r-project.org> wrote:
>
> Hello,
> I want to split the dataframe into 1000 groups based on two column values(max value and second max value).
2020 Aug 19
2
Intel AMX programming model discussion.
...u.lu at intel.com><mailto:hongjiu.lu at intel.com>
Subject: Re: [llvm-dev] Intel AMX programming model discussion.
Hi, Andy,
I don't quite understand everything that's going on here. Could we model this as:
1. Define a collection of register classes, one for 2x4 tiles, one for 4x2 tiles, etc. each populated with a set of tile registers. Registers can have aliasing relationships (instead of worrying of any kind of subregister/superregister relationships -- these won't be useful anyway).
2. Define the tile-configuration instructions so that they implicitly define all of...
2006 Jul 17
11
ZFS bechmarks w/8 disk raid - Quirky results, any thoughts?
Hi All,
I''ve just built an 8 disk zfs storage box, and I''m in the testing phase before I put it into production. I''ve run into some unusual results, and I was hoping the community could offer some suggestions. I''ve bascially made the switch to Solaris on the promises of ZFS alone (yes I''m that excited about it!), so naturally I''m looking
2020 Aug 19
3
Intel AMX programming model discussion.
...u.lu at intel.com><mailto:hongjiu.lu at intel.com>
Subject: Re: [llvm-dev] Intel AMX programming model discussion.
Hi, Andy,
I don't quite understand everything that's going on here. Could we model this as:
1. Define a collection of register classes, one for 2x4 tiles, one for 4x2 tiles, etc. each populated with a set of tile registers. Registers can have aliasing relationships (instead of worrying of any kind of subregister/superregister relationships -- these won't be useful anyway).
2. Define the tile-configuration instructions so that they implicitly define all of...
2017 Jun 01
3
Post for R
Hello,?
I want to split the dataframe into 1000 groups based on two column values(max value and second max value). First, I made two lists L1 and L2. ?L1 is the list divided into 100 groups based on the range of max value and L2 is divided into 10 groups based on the second max values. Now I want to do the combinations based on L1 and L2. I want to do a for loop for L1 and for each element in L1,