Displaying 20 results from an estimated 600 matches similar to: "Selecting one row or multiple rows per ID"
2009 Mar 13
2
Question on summing rows within nested variable
Hi,
I was hoping someone could help figure out how to write code for R to do the below.
I have data that looks like below. Variables, sid and pid are strings, slope is numeric. I need R to get me the mean of slopes for all pid's nested within each sid if there are more than one pid's nested within sid.
If there is only pid for a sid, like for 2.1 below, I want R to write a 0.
In the
2013 Feb 28
5
virtio PCI on KVM without IO BARs
OK we talked about this a while ago, here's
a summary and some proposals:
At the moment, virtio PCI uses IO BARs for all accesses.
The reason for IO use is the cost of different VM exit types
of transactions and their emulation on KVM on x86
(it would be trivial to use memory BARs on non x86 platforms
if they don't have PIO).
Example benchmark (cycles per transaction):
(io access) outw
2013 Feb 28
5
virtio PCI on KVM without IO BARs
OK we talked about this a while ago, here's
a summary and some proposals:
At the moment, virtio PCI uses IO BARs for all accesses.
The reason for IO use is the cost of different VM exit types
of transactions and their emulation on KVM on x86
(it would be trivial to use memory BARs on non x86 platforms
if they don't have PIO).
Example benchmark (cycles per transaction):
(io access) outw
2005 Jul 19
3
Predict
When I callculate a linear model, then I can compute via confint the
confidencial intervals. the interval level can be chosen. as result, I get
the parameter of the model according to the interval level.
On the other hand, I can compute the prediction-values for my model as well
with predict(object, type=c("response") etc.). Here I have also the
possibility to chose a level for the
2012 May 01
8
VGABIOS patches
Couple of patches to fix an overflow, optimize a bit and support bigger
resolutions using Windows 8.
2007 Apr 18
4
[RFC, PATCH 3/24] i386 Vmi interface definition
Master definition of VMI interface, including calls, constants, and
interface version.
Signed-off-by: Zachary Amsden <zach@vmware.com>
Index: linux-2.6.16-rc5/include/asm-i386/mach-vmi/paravirtualInterface.h
===================================================================
--- linux-2.6.16-rc5.orig/include/asm-i386/mach-vmi/paravirtualInterface.h 2006-03-08 10:08:45.000000000 -0800
+++
2007 Apr 18
4
[RFC, PATCH 3/24] i386 Vmi interface definition
Master definition of VMI interface, including calls, constants, and
interface version.
Signed-off-by: Zachary Amsden <zach@vmware.com>
Index: linux-2.6.16-rc5/include/asm-i386/mach-vmi/paravirtualInterface.h
===================================================================
--- linux-2.6.16-rc5.orig/include/asm-i386/mach-vmi/paravirtualInterface.h 2006-03-08 10:08:45.000000000 -0800
+++
2023 Mar 15
0
[PATCH v3 07/38] drm: handle HAS_IOPORT dependencies
On Tue, 14 Mar 2023, Niklas Schnelle <schnelle at linux.ibm.com> wrote:
> In a future patch HAS_IOPORT=n will result in inb()/outb() and friends
> not being declared. We thus need to add HAS_IOPORT as dependency for
> those drivers using them. In the bochs driver there is optional MMIO
> support detected at runtime, warn if this isn't taken when
> HAS_IOPORT is not
2005 Mar 25
3
Stratified bootstrap question
Dear experts,
I am asking for help with a question regarding to stratified bootstrap.
My dataset is a longitudinal dataset (3 measurements per person at year
1, 4 and 7) composed of multiple clinic centers and multiple participants
within each clinic. It has missing values.
I want to do a bootstrap to find the standard errors and confidence
intervals for my variance components. My model is a
2005 Nov 07
2
lattice chart: different definitions for series
Hi enthusiasts,
Trying to create a single chart in lattice with different plotting
definitions for the different series (two series should be drawn with lines
and the other without them)
I am using a dataset, which includes a grouping variable e.g. clinic with
three levels, the variable "year" and a continous variable: "mct".
In the graph the variable "year" is in
2003 Jun 30
4
Conference calls
Hi
I want to set up * as a conference bridge. I would like to be able to
conference is SIP calls (up to 12)
I am looking through all available documentation for * to get info on how it
is done. No luck so far.
Can somebody direct me to the info in this subject?
Thank you
Serge
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2006 Aug 02
4
Struts
I have a STRUTS based webapp and I want to port it to RUBY/RAILS...
Can anyone suggest a migration strategy...I would like to migrate my struts
actions over time if possible.
Jim
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2004 Aug 06
2
encoding/decoding example
Hello ,
I saw that in open source projects which use speex , like sweep and
linphone ,
(there are links in speex website to these projects) the encoding/decoding
process is done using vorbis/ogg.
(The encoded files which are produced has , for example, "ogg" header).
Is there anywhere examples using speex library for encoding and decoding
raw files with no "ogg" header?
2018 May 25
1
Urgent - R help - Multivariate - Naive Bayes code for R
Friends,
I am doing a URL classification, based on certain key words whether it
contains an executive information or not. I have already went through 50K
URL's and identified the key words and made it as 0, 1 ( 0 - do not have
the key word and 1 - have the key word) and 0- do not contain executive
information 1 - contains executive information.
A sample set of data is shown below.
DomainID
2003 Jun 13
1
(no subject)
Dear collegues,
Using maxstat I am getting the following:
> blood <- maxstat.test(Surv(SUPER, FV)~ZAP,data=zap70, smethod="LogRank")
Error in maxstat(y = structure(c(24.4301369863014, 26.4164383561644,
18.7835616438356, : couldn't find function "cscores"
I do not know the meaning of this problem. Could you please help me on dat?
Thank you in advance for your
2004 Apr 25
5
a simple suggestion for the next version of R windows
Is it possible to replace the word "R Console" on the title bar (is it what
it's called? It's the blue area above menu bar) with the name of the work
space file you're using or loaded, so people who are runing multple R
sessions at same time can identify them immediately. I'm using 1.9.0 in SDI
mode.
Thanks,
...Tao
2004 Apr 25
5
a simple suggestion for the next version of R windows
Is it possible to replace the word "R Console" on the title bar (is it what
it's called? It's the blue area above menu bar) with the name of the work
space file you're using or loaded, so people who are runing multple R
sessions at same time can identify them immediately. I'm using 1.9.0 in SDI
mode.
Thanks,
...Tao
2010 Mar 16
2
Retrieving latitude and longitude via Google Maps API
Does anyone have any experience retrieving latitutde and longitude for
an address from the Google Maps API?
I'd like to have an R script that submits a street address, city, state,
and zip code and returns the coordinates. So far, I've been submitting
the coordinates from another program, then loading the coordinates in R
and merging them back into the data frame I want to use.
2018 May 20
2
Scale
I would like to get horizontal numbers on the both axes: X and Y.
I got horizontal numbers only on the Y axis when adding las=2,
How to obtain a horizontal orientation for number on scale also for the X axis
(now they are vertical)? Here is my code:
plot(survfit(Y~addicts$clinic), fun="cloglog", las=2)
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2004 Aug 27
4
FIML in lme
Hi
I was asked if lme can use FIML (Full Information Maximum Likelihood)
instead of REML or ML but I don't know the answer. Does anybody know if
this is implemented in R?
Thanks
Francisco