Displaying 20 results from an estimated 9000 matches similar to: "concatenating dataframes (PR#381)"
1998 Feb 19
1
R-beta: dataframes again
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2005 Jan 29
7
Sipura SPA-841 auto-answer support [patch]
Sipura has implemented auto-answer in version 0.9.5 of the SPA-841
firmware. However, it is implemented via the Call-Info header, which
Asterisk stable doesn't currently support.
The attached patch implments a quick hack to support the Call-Info
header from the Dial() application by way of setting the CALL_INFO
variable. For example, the following macro can be used to dial up a
single
2009 Mar 29
1
Data decomposition
Hi R users,
I have a time series variable that is only available at a monthly level for
1 years that I need to decompose to a weekly time series level - can
anyone recommend a R function that I can use to decompose this series?
eg. if month1 = 1200 I would to decompose so that the sum of the weeks for
month1 equals 1200, etc..
Many thanks in advance for any help.
--
View this message in
2013 May 19
1
Generate positive definite matrix with constraints
Hi, I have a question for my simulation problem:
I would like to generate a positive (or semi def positive) covariance
matrix, non singular, in wich the spectral decomposition returns me the same
values for all dimensions but differs only in eigenvectors.
Ex.
sigma
[,1] [,2]
[1,] 5.05 4.95
[2,] 4.95 5.05
> eigen(sigma)
$values
[1] 10.0 0.1
$vectors
[,1]
2018 Oct 02
2
Reordering of load/stores using MemorySSA
Hello all,
It seems that it is insufficient to
rely on MemorySSA to correctly reorder load/stores.
For example, we have this following code:
v = load q
store 10, p
=>
store 10, p
v = load q // This is incorrect if p and q may alias
In the MemorySSA representation however,
there's no syntactic dependency between load/store,
because MemorySSA before transformation would look like this:
2013 Mar 22
1
Trouble embedding functions (e.g., deltaMethod) in other functions
Dear R community,
I've been writing simple functions for the past year and half and have come
across a similar problem several times. The execution of a function within
my own function produces NaN's or fails to execute as intended. My conundrum
is that I can execute the function outside of my function without error, so
it's difficult for me, as a novice functioneer, to figure out
2013 Oct 11
3
[LLVMdev] Generate code for ARM Cortex m0, m3, and m4.
Hi,
I am trying to cross compile code for ARM Cortex m0, m3, and m4.
For m0, I use:
-target armv6--eabi -mcpu=cortex-m0
That seems to work. For m3 and m4, I use the following which does not work
(fatal error: error in backend: CPU: 'cortex-m3' does not support ARM mode):
-target armv7m--eabi -mcpu=cortex-m3
and
-target armv7em--eabi -mcpu=cortex-m4
Who can help me with the
2011 Jul 09
3
Confusing piece of R code
m0<-epxression((4*theta1*theta2-theta3^2)/(2*x*theta3^2)-0.5*theta1*x)
params<-all.vars(m0) this reads all the params
from m0 so theta1,2 and 3 correct?
params<-params[-which(params=="x")] checks which params are multiplied
by x?
np<-length(params)
for(i in 1:6){
esp<-get(sprintf("m%d",i-1))
2005 Mar 09
3
problem using uniroot with integrate
Hi,
I'm trying to calculate the value of the variable, dp, below, in the
argument to the integral of dnorm(x-dp) * pnorm(x)^(m-1). This
corresponds to the estimate of the sensitivity of an observer in an
m-alternative forced choice experiment, given the probability of
a correct response, Pc, a Gaussian assumption for the noise and
no bias. The function that I wrote below gives me an error:
2009 Mar 20
1
CCA - manual selection
Hello,
I am trying to obtain f-values for response (independent) variables from a
CCA performed in vegan package, to see which ones of them have
significative influence in my dependent variables (like the manual selection
in canoco), but I can't find any function (or package) that do such a thing.
The dependents variables are species data, and the independents are
ambiental data.
Than you.
2014 Oct 21
2
[LLVMdev] Question regarding getElementPtr/Addressing modes in backend
Hi,
I am writing a backend and having issues with properly lowering the result
of getElementPtr ( specifically the add node that it generates).
If we take this IR:
%struct.rectangle = type { i24, i24 }
; Function Attrs: nounwind readonly
define i24 @area(%struct.rectangle* nocapture readonly %r) #0 {
entry:
%width = getelementptr inbounds %struct.rectangle* %r, i16 0, i32 0
%0 = load i24*
2013 May 07
6
[LLVMdev] Predicated Vector Operations
I'm trying to understand how predicated/masked instructions can be
generated in llvm, specifically an instruction where a set bit in the mask
will write the new result into the corresponding vector lane in the
destination and a clear bit will cause the lane in the destination to
remain what it was before the instruction executed.
I've seen a few places that suggest 'select' is the
2011 Aug 06
1
How set lm() to don't return NA in summary()?
Hi,
I've data from an incomplete fatorial design. One level of a factor doesn't
has the levels of the other. When I use lm(), the summary() return NA for
that non estimable parameters. Ok, I understant it. But I use
contrast::contrast(), gmodels::estimable(), multcomp::glht() and all these
fail when model has NA estimates. This is becouse vcov() and coef() has
different dimensions. Is
2014 Oct 23
2
[LLVMdev] Question regarding getElementPtr/Addressing modes in backend
Hi Steve,
Thanks for the tip regarding MIOperandInfo, I didn't think of that part of
the tablegen description.
Sadly, I did actually mean: r1 = *(i0 += m0).
So increment i0 by m0. Read memory the memory location "pointed" to by i0.
Store in r1. Sadly I am not too familiar with compiler terminology, so I
don't know if there is a proper term for such a load.
On Thu, Oct 23,
2015 Mar 05
2
[LLVMdev] A question to LLVM for ARMv6
Hi, all
I want to use LLVM to compile an ARM Cortex-M0 project on windows. Who can send me a sample, including command arguments and introdution about debug process. Thanks a lot.
-Steven
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2005 Dec 01
1
Kalman Smoothing - time-variant parameters (sspir)
Dear R-brains,
I'm rather new to state-space models and would benefit from the extra
confidence in using the excellent package sspir.
In a one-factor model, If I am trying to do a simple regression where
I assume the intercept is constant and the 'Beta' is changing, how do
I do that? How do i Initialize the filter (i.e. what is appropriate to
set m0, and C0 for the example below)?
2005 Jan 30
1
t-test or conf interval with known variance?
Hello,
Is there a built-in test in R for hypothesis testing with samples of
known variance?
For example, I've got a set of data, a mean to compare against, and a
known variance, and I want to determine the p-value for which I can
reject the null hypothesis (mu_1 = mu_0) and accept the alternative
(mu_1 > mu_0). I've found that JMP and Minitab can both do this (in
JMP, it's a
2011 Sep 28
1
Wilcox test and data collection
Dear Contributors
I have a problem with the collection of data from the results of a test.
I need to perform a comparative test over groups of data , recall the value
of the pvalue and create a table.
My problem is in the way to replicate the analysis over and over again over
subsets of data according to a condition.
I have this database, called y:
gg t1 t2 d
40 1 1
2006 Apr 29
1
SSPIR problem
I am having a problem with the package SSPIR. The code below
illustrates it. I keep getting the message: "Error in y - f :
non-conformable arrays."
I tried to tweak the code below in many different ways, for example,
substituting rbind for cbind, and sometimes I get a different error
message, but I could not find a variation of this code that would
work.
Any help will be greatly
2010 May 05
1
Predict when regressors are passed through a data matrix
Hi everyone,
this should be pretty basic but I need asking for help as I got stuck.
I am running simple linear regression models on R with k regressors where k
> 1. In order to automate my code I packed all the regressors in a matrix X
so that lm(y~X) will always produce the results I want regardless of the
variables in X. I am new to R but I found this advice somewhere so I guess
it is