Displaying 20 results from an estimated 300 matches similar to: "Creating Optimization Constraints"
2010 Oct 28
1
Rsolnp examples
I'm interested in the Rsolnp package. For their primary function
"solnp", one example is given, and there is a reference to "unit
tests". Anyone know where these can be found? Also, Rsolnp is
used in a few other packages (e.g., depmixS4), but I cannot seem
to find source illustrating its call sequence, and the precise
definition of the functions passed.
Can anyone help?
2011 Oct 17
5
Install the rugarch-package
Hi,
i am unable to install the rugarch package.
More than that i do not even find this package in my list of possible
packages.
Its possible than the name has changed, or the package is not longer
availiable?
Is there a similar package avaliable for garch modelling except the fGarch
what i am using now?
many Thanks
Roland
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2010 Nov 09
2
Creating a list to store output objects from a recursive loop
Dear Group,
I am having a function that I am running in a loop that generated two
results for each loop
The result1 is a zoo object
The result2 is a data frame
Now I want to put both of them in a list or some structure ... that I can
access or output to a file after the loop is done.
For e.g.
for (i in 1:20){
niceFunction(x[i],i)
}
niceFunction (x,i) {
result1 = someOperations() #zoo
2007 Jul 12
1
sub-function default arguments
Hi.
I have defined a function, f1, that calls another function, f2. Inside f1
an intermediate variable called nm1 is created; it is a matrix. f2 takes a
matrix argument, and I defined f2 (schematically) as follows:
f2<-function(nmArg1=nm1,...){nC<-ncol(nmArg1); ... }
so that it expects nm1 as the default value of its argument. f1 is defined
(schematically) as:
2010 Apr 30
2
deriving mean from specific cases
Hi all,
I have a large dataset that has >10k entries. The dataset is stored in a
dataframe with the headers:
SubID Condition1 Condition2 Result1 Result2
There are multiple entries for a given SubID(Subject ID). Condition 1 has 3
levels and condition2 has 2 levels (therefore there are 6 possible
combinations all together e.g. Cond1 Level1 x Cond2 Level 1 etc.) and i need
to compute for
1. The
2013 Sep 24
0
[LLVMdev] LLD: Returning true on success
On Tue, Sep 24, 2013 at 4:17 PM, Nick Kledzik <kledzik at apple.com> wrote:
>
> On Sep 24, 2013, at 12:40 PM, Michael Spencer <bigcheesegs at gmail.com>
> wrote:
>
> On Tue, Sep 24, 2013 at 12:33 PM, Rui Ueyama <ruiu at google.com> wrote:
>
>> Hi LLD developers,
>>
>> I'm about to make a change to invert the return value of Driver::parse()
2009 Oct 15
1
tapply() and using factor() on a factor
Dear List,
Shouldn't result1 and result2 be equal in the following case?
Note that log$RequestID is a factor. That is, is.factor(log$RequestID)
yields TRUE.
result1 <- tapply(log$Flag,factor(log$RequestID),sum)
result2 <- tapply(log$Flag,log$RequestID,sum)
Yet, when I summarize the output, I get the following:
summary(result1)
Min. 1st Qu. Median Mean 3rd Qu.
2010 Aug 17
1
MySQL Connect problem...
Right, I'm baffled.
I have:
exten => s,1,MYSQL(Connect DB1 127.0.0.1 geraint xxx amis2)
exten => s,n,MYSQL(Query NORESULT ${DB1} INSERT\ INTO\ recordings\
(caller_number\,called_number\,date_created\,date_started\,in_use\,server_id)\
VALUES\ (\'${CALLERID(number)}\'\,\'${ARG1}\'\,NOW()\,NOW()\,\'Yes\'\,12))
exten => s,n,MYSQL(Query RESULT1 ${DB1} SELECT\
2006 Apr 21
5
Simple Question: How to merge SQL results?
Hopefully an easy one, how do I merge two or more SQL query results?
Example:
result1 = find_by_sql(x)
result2 = find_by_sql(y)
What is the best way to merge result1 and result2? I want to be able
to reference the objects as if they were obtained via one query.
Cheers,
Dan
2013 Sep 25
0
[LLVMdev] LLD: Returning true on success
On Tue, Sep 24, 2013 at 4:44 PM, Nick Kledzik <kledzik at apple.com> wrote:
>
> On Sep 24, 2013, at 4:07 PM, Sean Silva <chisophugis at gmail.com> wrote:
>
> On Tue, Sep 24, 2013 at 4:17 PM, Nick Kledzik <kledzik at apple.com> wrote:
>
>>
>> On Sep 24, 2013, at 12:40 PM, Michael Spencer <bigcheesegs at gmail.com>
>> wrote:
>>
>>
2013 Sep 24
2
[LLVMdev] LLD: Returning true on success
On Sep 24, 2013, at 4:07 PM, Sean Silva <chisophugis at gmail.com> wrote:
> On Tue, Sep 24, 2013 at 4:17 PM, Nick Kledzik <kledzik at apple.com> wrote:
>
> On Sep 24, 2013, at 12:40 PM, Michael Spencer <bigcheesegs at gmail.com> wrote:
>
>> On Tue, Sep 24, 2013 at 12:33 PM, Rui Ueyama <ruiu at google.com> wrote:
>> Hi LLD developers,
>>
2011 Jan 18
3
error message
I was running a sampling syntax based on a data frame (ago) of 160 rows and
25 columns. Below are the column names:
> names(ago)
[1] "SubID" "AGR1" "AGR2" "AGR3" "AGR4" "AGR5" "AGR6" "AGR7"
"AGR8"
[10] "AGR9" "AGR10" "WAGR1" "WAGR2"
2013 Oct 18
1
crr question in library(cmprsk)
Hi all
I do not understand why I am getting the following error message. Can
anybody help me with this? Thanks in advance.
install.packages("cmprsk")
library(cmprsk)
result1 <-crr(ftime, fstatus, cov1, failcode=1, cencode=0 )
one.pout1 = predict(result1,cov1,X=cbind(1,one.z1,one.z2))
predict.crr(result1,cov1,X=cbind(1,one.z1,one.z2))
Error: could not find function
2010 Jan 21
1
why scores are different in rda() and princomp()
hello,
I am doing PCA in R using some habitat factors, and I used the function result1=rda() and result2=princomp(),then pick up scores of the result1 and result2 using scores(),but the scores are significantly different,i do not know the meaning of it.
Best wishes!
Cheng
2004 Apr 07
2
Help with character columns in a table
I have done a read.table on a data file with the aim of extracting
subsets of the data eg
table[table$desc = 'result1',]
How can I convert $desc to a character type? At present it is seen by
typeof() as an integer.
How can I do the equivalent of
table[table$desc = 'result1' && table$amt > 20, ]
Thanks,
Rory
--
Rory Campbell-Lange
<rory at
2011 Nov 15
3
Create a function with multiple object as an output
I've seen some questions regarding the output of multiple objects from a
function, however the suggestions all end up suggesting the use of
return(list(result1=result1, result2=result2 , result3=result3)).
How can I return multiple objects that are 2 big to be added to a list?
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2010 Jul 07
4
constrained optimization
Dear list,
The task view on optimization does not reference a package for non linear
constrained optimization problems. Stefan Theussl told me to look at the
Rsolnp package, but unfortunately it is not very clear what method is R
ported. (The authors ported the matlab code of Yinyu Ye
http://www.stanford.edu/~yyye/ <http://www.stanford.edu/%7Eyyye/>)
Currently I'm looking for an
2009 Aug 10
0
Speeding up a bootstrap routine
I have written the R code below to perform White's Data Mining Reality Check
(DMRC) but as it stands at the moment it is painfully slow. It is written as
a function as I call it many times from a script file with different data
input, and the output is sunk() to a text file. Could anyone suggest
improvements to the code to increase its speed?
boot_white_test <- function(data) {
2008 Sep 11
1
how to calcaulate matrices for two subsets
I am an R beginner and trying to run a market model using event study in
R framework.
First, I run a market model, that is lm(stock security~SP500 index,
subset=Obs[197, 396]) ->result1
Then I get predict results for a new dataset using predict (result1,
newdata=Obs[397,399]) ->pred1
Pred1 should have three numbers.
Now I need to calculate abnormal return by the formula stock
2013 Nov 04
0
[LLVMdev] conditional flow resulting in "Instruction does not dominate all uses!"
Well, what I had in mind was actually something like the following:
entry:
result0 = invoke func0 to defer_block unwind landing0
landing0:
landingpad
result1 = invoke func1 to defer_block unwind landing1
landing1:
landingpad
br defer_block
defer_block:
result = phi [ result0, entry ], [ result1, landing0 ], [ null, landing1 ]
...
This doesn't have landing pads with multiple