Displaying 20 results from an estimated 400 matches similar to: "average X value of specific Y"
2012 Dec 16
3
averaging X of specific Y (latitude)
Hello
I have a table describing butterfly range traits.
It is composed of three columns as below
Species name range size (X) latitude of range midpoint (Y)
There are 11 kinds of butterflies.
Each has its range size, and the latitude of each range midpoint ranges
from 9 to 19.
I would like to have the average range size of every degree of latitude.
For example, the average range
2007 Oct 05
3
R-2.6.0 package check problems
Hello
One of my packages, untb_1.3-2, passes R CMD check under
MacOSX (and apparently the systems used in the package check
summary page on CRAN) but fails with the following message on
R-2.6.0.tgz compiled last night on my (home) linux box. I hasten
to add that I have never seen this error before on home-compiled
pre-releases of R-2.6.0.
Can anyone help me understand what is going on?
2005 Jan 26
2
Butterflies in mdct.c
In mdct.c there's some functions including some-point butterfly. In 32-point and 16-point there are calling of smaller-point function everytime twice on each half of data. When I looked on it I found that's just linear algebra. So it can be rewritten to matrix multiplication. Some one can say: there's optimization on in register working. But imagine there's one calling 32-point,
2005 Feb 01
1
mdct.c optimization
I took function mdct_butterfly_8 and write out transformation matrix. Then I rewrote this matrix into sequence of additions and substractions (see attachement). As I suspected I got the same as in the original code but I swaped some rows to get little higher speed. I hope I'll do the same with 16 point butterfly function combined with 8 point butterflies in a month. Who still believe that this
2011 Aug 29
1
defining "id" argument in geeglm
Hi all,
I am trying to do a generalized estimating equation (GEE) with the "geepack"
package and I am not 100% sure what exactly the "id" argument means. It
seems to be an important argument because results differ considerably
defining different clusters.
I have a data set of counts (poisson distribution): numbers of butterfly
species counted every month during a period of
2015 Feb 05
5
[LLVMdev] RFC: Recursive inlining
Hi,
The other day on IRC myself, Chandler, Hal and Pablo discussed recursive
inlining. I've pondered a bit since then, and thought I'd get some
background on the list with the aim of stimulating discussion.
Our goal is to inline recursive functions. We have several workloads with
recursive calls, and inlining them to a certain degree can improve
performance by up to 30%.
Inlining
2003 Aug 13
1
means comparison with seasonal time series?
Dear R list,
I have a sequence of weekly observations of number of adults and larvae
in various size classes from a butterfly population living in a
subtropical area with pronounced wet and dry seasons. Wet and dry
seasons are each defined 26 weeks long with fixed start and end dates.
The data span 103 weeks (two seasons each of wet and dry) with some
missing weeks. What I would like to do is
2002 Oct 22
4
repeatedly crashing smbd when printing: broken pipe
for months, we keep fighting issues with smbd
(now at released 2.2.6), config is with spoolss,
domain logon, and the client in question is an
NT4 machine. server is a i386/linux 2.2.19
For a very long time, we thought it was related
to oplocks, but now after having them disabled,
it still is there.
Level 3 Log is as follows:
[2002/10/22 17:08:18, 3] smbd/ipc.c:reply_trans(480)
trans
2010 Jan 05
1
[LLVMdev] Help adding the Bullet physics sdk benchmark to the LLVM test suite?
Hi Anton, and happy new year all,
>>One questions though: is it possible to "verify" the results of all
>>the computations somehow?
Good point, and there is no automated way currently, but we can work on
that.
Note that simulation suffers from the 'butterfly effect', so the smallest
change anywhere,
(cpu, compiler etc) diverges into totally different results after a
2013 May 03
1
R package for bootstrapping (comparing two quadratic regression models)
Hello ,
I want to compare two quadratic regression models with non-parametric
bootstrap.
However, I do not know which R package can serve the purpose,
such as boot, rms, or bootstrap, DeltaR.
Please kindly advise and thank you.
Elaine
The two quadratic regression models are
y1=a1x^2+b1x+c1
y1= observed migration distance of butterflies()
y2=a2x^2+b2x+c2
y2= predicted migration distance of
2015 Feb 05
5
[LLVMdev] RFC: Recursive inlining
Hi Hal,
> As we had briefly mentioned on IRC, one way of forming this 'stack', and
its associated 'cnt' variable, is to use dynamic stack allocation.
I hadn't really reached a decision on the mechanics yet. However, your
suggestion while it can work within the current abilities of the IR, has
the disadvantage that it is using an extra stack slot for the link pointer.
I
2013 May 01
2
significantly different from one (not zero) using lm
Hello,
I am work with a linear regression model:
y=ax+b with the function of lm.
y= observed migration distance of butterflies
x= predicted migration distance of butterflies
Usually the result will show
if the linear term a is significantly different from zero based on the
p-value.
Now I would like to test if the linear term is significantly different from
one.
(because I want to know
1998 Oct 25
2
EGCS optimizer bug?
The current development version dies in qbeta() when compiled with
egcs -O, egcs 1.0.2 and glibc 2.0.7 (RedHat versions). Since this also
kill the F and t distributions, it doesn't exactly do wonders for R's
usefulness...
Anyone else seeing this or has my setup just gone out of whack? It
does look pretty much like a clear compiler bug when inlining math
functions (storing temporaries
2008 Aug 11
1
Simple lme/lmer random effects questions
Hello,
I have two very rudimentary questions regarding the random effects terms
in the lme and lmer functions. I apologize if this also partly strays
into a general statistics question, but I'm a bit new to this all. So
hopefully it'll be a quick problem to sort out...
Here is my experimental setup: I raised butterflies in 5 different
testing chambers all set to different
2002 Jul 23
1
Wierd Problem, appears Samba related perhaps?
Hello,
I'm relatively new to Samba, but have it set up on my RedHat 7.3 system, and
it's running great. Except for one thing, and I'm not sure if this is a
Samba
problem or a problem with my machines.
What the problems appears is that when I'm copying or moving images (jpegs,
bmps are the only two I've tried so far) from both my laptop and my desktop
(both Win2k mahcines),
1998 Dec 22
1
reinstalling R
Hi,
My question is: if I want to recompile and reinstall a newer version of R
under linux, must I remove the old binaries previously installed ?
If yes where are located them?
Thanks!
Andrea.
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r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or
2014 Sep 10
4
[RFC PATCH v1 0/3] Introducing ARM SIMD Support
libvorbis does not currently have any simd/vectorization.
Following patches add generic framework for simd/vectorization
and on top, add ARM-NEON simd vectorization using intrinsics.
I was able to get over 34% performance improvement on my
Beaglebone Black which is single Cortex-A8 based CPU.
You can find more information on metrics and procedure I used
to measure at
2015 Feb 18
5
[LLVMdev] RFC: Recursive inlining
Hi,
Apologies for the very late response.
We have manually tried the idea with a very simple Fibonacci sequence code. While being very very simple, the recursion cannot be handled by TRE. Because there are two recursive callsites, it also needs to keep some sort of state across iterations of the "while(stack not empty)" loop.
We get between 2.5 and 8x slowdowns depending on which
2013 Apr 01
1
[LLVMdev] path profile result with LLVM
I want to get path profiling information with LLVM.
LLVM provides methods for path profiling.I also get the llvmprof.out
successfully. So I want to output the result.With llvm-prof ,I get the
error:llvm-prof: Unkknown packet #5.
So I have to write my own pass to output the path profiling result,the
following is my kernel codes:
2018 Nov 27
2
[RFC] Tablegen-erated GlobalISel Combine Rules
...Continued from the other email
Removing the defs section
We can potentially infer quite a lot of the defs section but it requires both a complicated ruleset and that tblgen spends processing time doing the inferencing. That processing time is potentially significant for large combiners and for that reason we need to be careful not to let inferencing become a burden on tblgen. My main worry