Displaying 9 results from an estimated 9 matches for "castejon".
2000 Feb 14
2
Error in the inverse of a diagonal matrix?
...r a general matrix, not for a diagonal one)?
I would really appreciate your help and support.
Thanks in advance.
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Manuel Castejon Limas.
Manuel.Castejon at dim.unirioja.es
Departamento de Ingenieria Mecanica. | Mechanical Engineering Department.
Area de Proyectos de Ingenieria. | Project Management Area.
Universidad de La Rioja. | University of La Rioja.
Espa?a....
2000 May 24
3
order() results
Hi,
Let?s consider aux1. I wanted to order its data considering its first column as the index
> aux1[1:4,]
V1 V2 V3 V4 V5 V6
1 0.08506724 150 1956 15.08 233.82 463.295 14
2 0.76205323 203 1922 15.35 218.74 463.295 14
3 0.86274890 195 1835 12.54 203.39 463.295 14
4 0.37940715 152 1567 24.73 190.85 463.295 14
> aux2 <-- aux1[order(aux1[1:4,1]) , ]
> aux2
2000 Jun 28
3
BMP to matrix
Hi all,
is there any R function that loads a bmp file, or any other format, and converts its grid of pixels into a matrix or data frame?
Thanks in advance.
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2000 Feb 29
2
backup signal
2011 May 10
1
Reference Classes copy(shallow=FALSE) unexpected behavior.
...opy and create copies of
those objects as well.
As I''m new with reference classes this causes me a lot of confussion. Is
this a bug, is this a feature?
Any insights about the matter are welcome
Thanks in advance
-M
--
Manuel Castejón Limas
University of León,
Spain
manuel.castejon@unileon.es
[[alternative HTML version deleted]]
2002 Jun 07
1
Rank of a matrix?
Hello everyone,
this is a very simple question but I could not find the answer. :-(
Is there any function in R for calculating the rank of a matrix?
(In the sense of the dimension of the vectorial space that spans)
Thank you in advance!
Manuel
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2003 Jan 22
1
re: box counting method and other landscape ecology measures
Hi all,
I wish to implement various landscape ecology measures through R, such
as: box counting dimension; twist number statistics; contagion and
lacuniarity indices; angular second moment; adjacency measures;
dominance indices; etc ...
Some of the measures can be applied to shape analysis and classification.
Is anyone implementing any of these measures? If so I would like to
contribute and
2007 Dec 14
2
train nnet
Hi R-helpers,
Can some one tell me how to train 'mynn' of this type?:
mynn <- nnet(y ~ x1 + ..+ x8, data = lgist, size = 2, rang = 0.1,
decay = 5e-4, maxit = 200)
I assume that this nn is untrained, and to train I have to split the
original data into train:test data set,
do leave-one-out refitting to refine the weights (please straighten
this up if I was wrong).
I just don't know
2011 Oct 24
1
Alternatives to NFS for sharing ZFS
Hi,
I would like to share my ZFS filesystem over the network and make it in
addition fault tolerant. I am out after performance and fault tolerance, but
I do not want to miss the advantages of deduplication, cloning and
snapshoting offered by ZFS. I have read something about Lustre being
integrated with ZFS, so that could be an option, right? Could I also use,
for example, MooseFS? Thanks!