Displaying 20 results from an estimated 7000 matches similar to: "Question about allocMatrix error message"
2012 Jul 31
1
ways of getting around allocMatrix limit?
I need to multiply to very large, nonsparse matrices, and so get the
error "allocMatrix: too many elements specified".
Is there a way to set the limit for allocMatrix?
In my case, the two matrices, A and B, are nxm and mxp where m is
small, so I could subdivide each into blocks of submatrices
A=rbind(A1,A2,...) and B=cbind(B1,B2,...) then multiply each pair of
submatrices, but I was
2009 Dec 11
3
how to creat a matrix
Dear R family
I am attempting to create a matrix. e.g.,
0 0 0 0 1
1 0 0 0 0
0 1 0 0 0
0 0 1 0 0
0 0 0 1 0
How could I write a R program?
Later I want to extend it to a N by N case.
Thanks in advance
best
Moohwan
2010 Jul 05
4
To detect the location of duplicate values
Dear R family,
I have a question about how to detect some duplicate numeric observations.
Suppose that I have two variables dataset.
order value
1 0.52
2 0.23
3 0.43
4 0.21
5 0.32
6 0.32
7 0.32
8 0.32
9 0.32
10 0.12
11 0.46
12 0.09
13 0.32
14 0.25
;
Could you help me indicate where the duplicate observations in a row
(e.g., 0.32) are?
best,
moohwan
2009 Feb 17
1
allocMatrix error
On Sat, Feb 14, 2009 at 00:17, <ashrafi@ucdavis.edu> wrote:
Hi,
I was trying to read ~400 chips in an affybatch and I got the same message.
Could you find a remedy for that. My server has 128 GB of RAM. However, R
halted ever before it uses the memory.
I have been able to load upto 250 CEL files but this time I wanted to test
what would happen if I want to normalize 400 chips.
Thanks
2011 Nov 01
1
reducing a too-large matrix obtained with allocMatrix()
Hello,
I have some C code (for a shared lib called via .External) that uses
PROTECT(w= allocMatrix(REALSXP, m, n));
mostly successfully. In rare cases, though, the row count m will be
an overestimate. Is there a way to reallocate the matrix in-place,
something like
reAllocMatrix (w,m-excess,n) /* where excess is > 0 */
to chop off the last excess rows of w? I only find out about the
2009 Sep 28
1
help with lda function
I am having a problem understanding the lda package. I have a dataset here:
[,1] [,2] [,3]
[1,] 2.95 6.63 0
[2,] 2.53 7.79 0
[3,] 3.57 5.65 0
[4,] 3.16 5.47 0
[5,] 2.58 4.46 1
[6,] 2.16 6.22 1
[7,] 3.27 3.52 1
If I do the following;
"names(d)<-c("y","x1","x2")
d$x1 = d$x1 * 100
d$x2 = d$x2 * 100
g<-lda( y ~ x1 + x2, data=d)
v2
2009 Dec 18
1
to remove an error with log(zero)
Dear R family
I have an arbitrary column vector.
1
2
4
0
7
5
0
0
0
9
11
12
When I attempt to take natural logarithm of the series, as you guess
there is an error message. To overcome this problem, my idea is to
replace a zero or zeros in a row with appropriate numbers.
In order to implement it, I need to detect where zeros are.
Then I am going to take the average of two adjacent neighbors. In the
2009 Sep 29
1
help with lda function from MASS package
Thanks David,
Yes, I am talking about the MASS package.Thank you for pointing out that
these scale the same. My question is, how do I get from the V1 data:
V1
1 164.4283
2 166.2492
3 170.5232
4 156.5622
5 127.7540
6 136.7704
7 136.3436
to the other set of data:
+ 1 -2.3769280
+ 2 -2.7049437
+ 3 -3.4748309
+ 4 -0.9599825
+ 5 4.2293774
+ 6 2.6052193
+ 7 2.6820884
On Mon, Sep 28, 2009
2012 Dec 06
0
Package party Error in model.matrix.default(as.formula(f), data = blocks) :allocMatrix: too many elements specified
Dear all:
I¡¯m trying to get unbiased feature importance of my data via package ¡°party¡±, which contains 1-5 integer value, and a few numeric values attributes. The class label is 1-5 integer value as well. In total I have 20 features with 1100 observations. I checked the type my data in R using class(my_data_cell), no factor has been observed. I received a commond error like others did
2010 Jul 05
2
to remove duplicate values
Dear R family,
Suppose I have two series.
order value
1 0.52
2 0.23
3 0.43
4 0.21
5 0.32
6 0.32
7 0.32
8 0.32
9 0.32
10 0.12
11 0.46
12 0.09
13 0.32
14 0.25
For these two series, I figured out the way to detect the locations of
duplicate values.
The next thing to do is remove the repeated values except for a value
that would not be next to each other.
In other words, while keeping the
2009 Dec 11
2
How to calculte the power of a matrix
Dear R family
I have a following question.
Suppose I have a matrix as follows, for instance:
tau=
0 1 0 0 0
0 0 1 0 0
0 0 0 1 0
0 0 0 0 1
1 0 0 0 0
I want to calculate (-m) power of tau, for example, m=893.
When I run tau^2, the outcome is just tau.
Any help would be appreciated.
thanks in advance.
best
moohwan
2012 Dec 17
1
Code works standalone, yet same code fails when part of package
Hi
I'm missing something here but I cannot figure out what. What I can see is that the same code works when I load it via source(...) yet fails when I execute it after loading the package I have built (which includes the code.
Below is a transcript of my R session. First I load the code from a file, using source(). Then I execute it fine. Then I remove the function object, I load the
2011 Jun 18
1
double integral calculation
a=[0.1,0.2,0.1,0.3,0.4]
b=[0.2,0.3,0.1,0.2,0.5]
c=[1,1,1,1,1]
log(c+a-x*b) where x=unknown scale variable.
int=$$log(c+a-x*b)dadb, where $ denotes integral sign.
Actually, how could I calculate the integral's approximation?
double summation?
best,
moohwan
2009 Dec 11
1
How could I find the inverse of a matrix?
Dear R family
I have a following question.
Suppose I have a matrix as follows, for instance:
tau=
0 0 0 0 1
1 0 0 0 0
0 1 0 0 0
0 0 1 0 0
0 0 0 1 0
I want to have the inverse of the above matrix and then add some
exponent to it. That is, I want to calculate tau to the (-m). For
example, m=893.
Thanks in advance
Best regards
Moohwan Kim
2009 Dec 13
1
too large dimension problem
Dear R family
When I run the command below, the error message came up. It seems like
the problem is about computer capacity.
It would be appreciated if anyone could give me a solution.
###########
> N <- 415884
> tau <- diag(1, N)[c(N, 1:(N - 1)),]
Error in array(0, c(n, p)) : 'dim' specifies too large an array
Best
Moohwan
2010 Jun 04
2
Convolution vector to be derived
I want to generate the following outcome using convolution of two sequences.
x <- c(1,2,3,4,5)
y <- c(6,7,8,9)
The resulting convolution vector is
6
19
40
70
100
94
76
45
When using convolve(), it is hard to produce the result above.
Would you help me out to get that?
Best regards
Moohwan Kim
2011 May 19
2
trouble with summary tables with several variables using aggregate function
Dear all,
I am having trouble creating summary tables using aggregate function.
given the following table:
Var1 Var2 Var3 dummy
S1 T1 I 1
S1 T1 I 1
S1 T1 D 1
S1 T1 D 1
S1 T2 I 1
S1 T2 I 1
S1 T2 D 1
S1 T2 D 1
S2
2010 Nov 24
2
Create new string of same length as entry in dataframe
I suspect that this is simple, but thanks in advance for any advice...
I have a dataframe, t2:
V1 V2
aaa 3
aaaa 4
aaaaaa 6
a 1
aa 2
V2 is the length of the string in V1 using nchar(as.character(t1$V1))
I'd like to create a third column, that contains a string of the length of
V2, but containing an alternate text, e.g.
V1 V2 V3
2007 Jul 10
1
How to preserve data across function calls in a library package
Hi,
I am writing an R package with two functions in C++. So far
everything works.
Now, i would like to write a third function which would use a pointer
(it is a pointer to a class object) created by first function.
I tried placing this pointer outside of the function definitions
(i.e to make it global) but when called in the 3rd function i get
> *** caught bus error ***
address 0x0,
2007 Jul 10
1
How to preserve data across function calls in a library package
Hi,
I am writing an R package with two functions in C++. So far
everything works.
Now, i would like to write a third function which would use a pointer
(it is a pointer to a class object) created by first function.
I tried placing this pointer outside of the function definitions
(i.e to make it global) but when called in the 3rd function i get
> *** caught bus error ***
address 0x0,