Displaying 20 results from an estimated 5000 matches similar to: "Eliminating a row if something happens"
2011 Jul 02
5
How many times occurs
Hi all,
I have a data matrix likein "input.txt"
8 9 2 5 4 5 8 5 6 6
8 9 2 8 9 2 8 9 2 1
8 9 2 5 4 5 8 5 6 4
8 9 2 5 4 5 8 5 6 6
8 9 2 8 9 2 8 9 2 1
8 9 2 5 4 5 8 9 2 2
In this example will be an 6x10 matrix (or data frame)
I want to detect how many times in a row appears this combination 8 follewd
by 9 followed by 2, and create a new matrix with only this number of occurs
then
2011 Mar 07
2
rowSums - am I getting something wrong?
I am trying to construct a data set with some sequences for example:
a = seq(0,1,0.1)
m = matrix(nrow = 1331, ncol = 3)
m[,1] = rep(a,121)
m[,2] = rep(a,11,each = 11)
m[,3] = rep(a,1,each = 121)
I realize that there may be better ways of doing this, but this approach demonstrates the problem I'm having.
I then want to get the sum of the rows and delete any row with a sum of greater than 1.
2011 Apr 05
2
IFELSE function XXXX
Hello everyone,
This IFELSE function call is not working properly. I do not receive an error
message, but the actions are not executed conditional as I was hoping. Any
assistance is appreciated.
set.seed(12345)
res1<-rbinom(10000,1,.1)
rdata3<-transform(data.frame(res1),input1=rnorm(10000,50,10))
data3
#inducing correlation between res1 & input1
2007 Jun 05
2
.activate() behaviour
Hi all,
I''m trying to understand why the following code doesnt work...
----------------------------------------------------------------------------------------
<html>
<head>
<title>blabla</title>
<script type="text/javascript" src="prototype.js"></script>
</head>
<body>
<form action="bllalba">
2000 Sep 20
1
'fixing' list components
I have a list x (say) that will contain many inputs to and outputs a model.
x$input1 <- assign.input1(parameter1, parameter2)
is one way to assign input1, but it would be neater to be able to do
assign.input1(x, parameter1, parameter2)
Is this a good idea? If so, what is a good way to do it?
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r-help mailing
2010 May 29
3
[LLVMdev] Vectorized LLVM IR
Le 29 mai 2010 à 01:08, Bill Wendling a écrit :
> Hi Stéphane,
>
> The SSE support is the LLVM backend is fine. What is the code that's generated? Do you have some short examples of where LLVM doesn't do as well as the equivalent scalar code?
>
> -bw
>
> On May 28, 2010, at 12:13 PM, Stéphane Letz wrote:
We are actually testing LLVM for the Faust language
2010 May 28
0
[LLVMdev] Vectorized LLVM IR
Hi Stéphane,
The SSE support is the LLVM backend is fine. What is the code that's generated? Do you have some short examples of where LLVM doesn't do as well as the equivalent scalar code?
-bw
On May 28, 2010, at 12:13 PM, Stéphane Letz wrote:
> Hi,
>
> We are experimenting directly generating vectorized LLVM IR (using <8 x float> kind of types), then compiling the code
2006 Oct 06
1
transactions not work for array?
Hi,
I have a transaction block as follow:
begin
Hello.transaction(input1,input2)
input1.save
for i in 0 to count
input2[i].input1_id = input1.id
input2[i].save
end
end
rescue
end
I have used validates_uniqueness_of for input2 in the model
The problem is, when there is duplicate record in input2, input1 and the
first record in input2
2010 May 29
0
[LLVMdev] Vectorized LLVM IR
On Sat, May 29, 2010 at 12:42 AM, Stéphane Letz <letz at grame.fr> wrote:
>
> Le 29 mai 2010 à 01:08, Bill Wendling a écrit :
>
>> Hi Stéphane,
>>
>> The SSE support is the LLVM backend is fine. What is the code that's generated? Do you have some short examples of where LLVM doesn't do as well as the equivalent scalar code?
>>
>> -bw
>>
2010 May 28
3
[LLVMdev] Vectorized LLVM IR
Hi,
We are experimenting directly generating vectorized LLVM IR (using <8 x float> kind of types), then compiling the code to SSE on a 64 bits machine. Right now the equivalent code in scalar mode sill outperform the SSE one.
What is the quality of the SSE support in X86 LLVL backend? Are they any specific things to be aware of to improve the speed?
Thanks
Stéphane Letz
2005 Mar 05
1
vector memory allocation?
Hi all,
I have a vector size allocation problem with R 2.0.1 (script and output
shown):
> var1 <- sum (input1 * input2, na = TRUE)
> gc()
used (Mb) gc trigger (Mb)
Ncells 199327 5.4 785113 21.0
Vcells 71039552 542.0 206003790 1571.7
> var2 <- sum (input1 * input2 / input2, na = TRUE)
Error: cannot allocate vector of size 524288 Kb
input1 and
2010 Feb 10
4
Readjusting the OUTPUT csv file
Dear R helpers
I have some variables say ABC, DEF, PQR, LMN and XYZ. I am choosing any three varaibles at random at a time for my analysis and name these files as input1.csv, input2.csv and input3.csv. So if I choose variables say ABC, DEF and PQR, I am passing the specifications of these variables to input1.csv, input2.csv and input3.csv respectively.
This means in another case even if I
2009 Jan 14
1
Adressing list-elements
Dear all,
I'm using R 2.8.1 under Vista.
I programmed a Simulation with the code enclosed at the end of the eMail.
After the simulation I want to analyse the columns of the single
simulation-runs, i.e. e.g. Simulation[[1]][,1] sth. like that but I
cannot address these columns...
Can anybody please help?
Best,
Thomas
############################ CODE ############################
2011 Apr 28
1
Subscript out of Bounds
I currently have this code:
for(j in 2:n){
for(i in 1:(j-1)){
# Make sure the inputs are for the matrix "m"
input1=rownames(m)[i]
input2=colnames(m)[j]
q=t[(t$Rec1==input1 & t$Rec2==input2),output]
if(length(q)==0){
q=t[(t$Rec1==input2 & t$Rec2==input1),output]
}
m[i,j]=mean(q)
m[j,i]=mean(q)
m[j,j]=mean(q)
}}
I already created a
2011 May 26
1
matrix not working
Hello All,
I'm trying to create a matrix from a dataframe (let's call it df):
......a......b.....c.....d
a inputs output
b inputs output
c inputs output
d inputs output
e inputs output
The inputs are represented by columns a and b
The outputs are represented by columns c and d, but the only outputs are
those from column d
- some values from column d are
2000 Nov 14
3
2 plots 1 figure
How do you obtain two plots on the same figure?
for example
plot(rnorm(100)
plot(rnorm(100),type="l")
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2011 Aug 08
3
on "do.call" function
Dear all,
Even though one of R users answered my question, I cannot understand, so I
re-ask this question.
I am trying to use "do.call", but I don't think I totally understand this
function.
Here is an simple example.
--------------------------------------------
> B <- matrix(c(.5,.1,.2,.3),2,2)
> B
[,1] [,2]
[1,] 0.5 0.2
[2,] 0.1 0.3
> x <- c(.1,.2)
>
2009 Aug 18
2
Execute some kind of script when something happens with Asterisk
Would it be possible to execute some kind of script when for example
Asterisk restarts... or stops... ?
How can one read the status of Asterisk so that when the service is
stopped I could be notified by mail, by text message,... ?
I don't know how to read the status of Asterisk (or the change of
status) in a bash-script.
Thanks for the reply !
Kind regards,
Jonas.
-------------- next part
2008 Sep 24
4
rowSums()
Say I have the following data:
testDat <- data.frame(A = c(1,NA,3), B = c(NA, NA, 3))
> testDat
A B
1 1 NA
2 NA NA
3 3 3
rowsums() with na.rm=TRUE generates the following, which is not desired:
> rowSums(testDat[, c('A', 'B')], na.rm=T)
[1] 1 0 6
rowsums() with na.rm=F generates the following, which is also not
desired:
> rowSums(testDat[, c('A',
2005 Feb 09
4
subset
Dear all,
I am trying to extract rows from a data.frame based on the
rowSums != 0. I want to preserve rownames in the first column in the subset.
Does anyone know how to extract all species that don't have rowSums equal
to zero? Here it is:
# dataset
x <- data.frame(
species=c("sp.1","sp.2","sp.3","sp.4"),
site1=c(2,3,0,0),
site2=c(0,0,0,0),