Displaying 6 results from an estimated 6 matches for "nnz".
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jnz
2009 Oct 24
1
operations on sparse matrices, and dense intermediary steps
...the language, such as pass-by-value bu default?
Or am I doing something inneficent without knowing?
(Note: example below would only work with 64bit R and lots of memory;
reduce size of matrix 2-3 orders of magnitude for 32-bit R)
## libraries
library(Matrix)
rSpMatrix <- function(nrow, ncol, nnz, rand.x = function(n)
round(rnorm(nnz), 2))
{
## Purpose: random sparse matrix
## ----------------------------------------------------------------------
## Arguments: (nrow,ncol): dimension
## nnz : number of non-zero entries
## rand.x: random number generator for '...
2008 Jun 24
0
sparse matrix and block of R
...34
observations.
My questions are the following:
first, when I give the command
X=as.matrix.csr(X)
and in matrix X there are some elements that repeat in some rows (i.e
in row 1 there is value 3, in row 2 there is again value 3 in the same
position), he gives me the following error:
Error in if (nnz == 0) { : valore mancante dove ? richiesto TRUE/FALSE
(That means : missing value when it is required true/false).
When I take off that column with same value that repeats it works well
and creates the sparse matrix. Can you help me to correct this
problem? Is there a bug in the sparse matrix comm...
2008 Apr 18
0
Fw: efficiently replacing values in a matrix
...To: roger koenker <rkoenker at uiuc.edu>
Sent: Friday, April 18, 2008 1:08:58 PM
Subject: Re: [R] efficiently replacing values in a matrix
I tried the sparse matrix implementation, still there are issues:
a <- matrix(nrow=10000,ncol=10000)
> a.csr <- as.matrix.csr(a)
Error in if (nnz == 0) { : missing value where TRUE/FALSE needed
I'm guessing this error here is because 'a' matrix is initialized with'NA's. Yet when I try initializing 'a' matrix with 0s I get:
> a<-matrix(nrow=10000,ncol=10000,rep(0,10000*10000))
Error: cannot allocate vector o...
2004 Sep 10
1
Netmeeting i can't hear voice
Hi.
After a small war with "underfined sybol" error and conflicts between h323
and oh323 I successfully install h323 channel.
Now, I can connect from Netmeeting to SIP and ZAP channels, but I can't here
anything.
When I call at phone, and try to speak, on another end of line man said,
that my voice very low. Microphone volume is maximum...
Is there some parameters like rxgain,
2004 Jul 30
1
Connecting Asterisk and Avaya Definity By E1. Incoming work, but not outgoing
Hi All.
I connect asterisk and definity by manual at
www.voip-info.org/tiki-index.php?page=Asterisk%20Avaya.
(I just only have E1, not T1 card).
I see, that card work (in definity trunk status, and at asterisk
== D-Channel on span 1 up
-- B-channel 1 successfully restarted on span 1
-- B-channel 2 successfully restarted on span 1
-- B-channel 3 successfully restarted on span 1
2004 Jul 30
3
Connecting Asterisk and Avaya Definity By E1 . Incoming work, but not outgoing
Yes, I can make a call on that extension from other definity phone, if you
mean it.
-----Original Message-----
From: Ken Godee [mailto:ken@perfect-image.com]
Sent: 30 ÉÀÌÑ 2004 Ç. 19:14
To: asterisk-users@lists.digium.com
Subject: Re: [Asterisk-Users] Connecting Asterisk and Avaya Definity By E1.
Incoming work, but not outgoing
Roman Bessyadovskii wrote:
> Hi All.
>
> I connect