Displaying 20 results from an estimated 1100 matches similar to: "Rank of a matrix?"
2011 May 10
1
Reference Classes copy(shallow=FALSE) unexpected behavior.
Dear all,
I''ve just discovered the ''Reference Classes''.
In a previous attempt ---a year ago--- to re-implement in a Object Oriented
fashion the AMORE package using S4 classes I strongly felt the need of such
capability. It''s great to have the Reference Classes now available. Along
with the discovery of the Rcpp package, this new programming paradigm has
boosted
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 Feb 14
2
Error in the inverse of a diagonal matrix?
I?m new to R so maybe this issue has been asked before and I still could not read the complete set of past messages sent to the list.
I found a weird behabiour that I will explain with a simple example. Lets consider the following block of commands:
> x <- diag(c(1,4,10))
> x
[,1] [,2] [,3]
[1,] 1 0 0
[2,] 0 4 0
[3,] 0 0 10
> invx <- x^-1
> invx
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
2000 Feb 29
2
backup signal
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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2008 Jul 07
3
[LLVMdev] Trying to compile llvm-gcc to mips
Hi, well, I downloaded the head revision of llvm and llvm-gcc. As you said
it hangs at:
Formal argument #0 has unhandled type f32
/home/julio/trunk/llvm-gcc/gcc/libgcc2.c:1765: internal compiler error:
Abortado
Please submit a full bug report,
with preprocessed source if appropriate.
Actually, I don't need fp, there is any way to disable?
By the way, I'm working with a MIPS coprocessor
2008 Jul 07
0
[LLVMdev] Trying to compile llvm-gcc to mips
And one last thing, the problem seems to be related to libcpp. Using only C
frontend will work?
2008/7/7 Julio <julio.martin.hidalgo at gmail.com>:
> Hi, well, I downloaded the head revision of llvm and llvm-gcc. As you said
> it hangs at:
>
> Formal argument #0 has unhandled type f32
> /home/julio/trunk/llvm-gcc/gcc/libgcc2.c:1765: internal compiler error:
> Abortado
2019 Jul 02
2
RFC: Complex in LLVM
On Tue, 2 Jul 2019 at 19:11, Finkel, Hal J. <hfinkel at anl.gov> wrote:
> One option is to make the complex type a special kind of vector, or a
> special kind of aggregate (I have a slight preference for the latter).
> That gives us an existing set of accessors.
I agree non-vector. If nothing else a vector of complexes seems like a
sensible concept which would be harder if a
2015 Dec 09
2
SVM hadoop
Buenos días,
alguien sabe si hay alguna manera de implementar una máquina de soporte
vectorial (svm) con R-hadoop??
Mi interés es hacer procesamiento big data con svm. Se que en R, existen
los paquetes {RtextTools} y {e1071} que permiten hacer svm. Pero no estoy
segura de que el algoritmo sea paralelizable, es decir, que pueda correr en
paralelo a través de la plataforma R-hadoop.
Muchas
2007 May 15
2
sobre tutorial
Estimado, te agradeceria me envies el tutorial en espaniol para R. Estoy
dando mis primeros pasos con esta aplicacion.
Desde ya muchas gracias
Danilo Ceschin Ph.D
IGBMC
1 rue Laurent Fries
67404 ILLKIRCH CEDEX - FRANCE
tel 33 3 88 65 3457
email danilo at titus.u-strasbg.fr
2006 Aug 20
1
C compile problem on Ubuntu linux
Under Ubuntu dapper, after installing packages gcc and g77, under
platform i486-pc-linux-gnu
arch i486
os linux-gnu
system i486, linux-gnu
status
major 2
minor 2.1
year 2005
month 12
day 20
svn rev 36812
language R
I get an error when trying to update.packages('Hmisc'):
gcc -I/usr/lib/R/include -fPIC -g -O2 -c ranksort.c -o ranksort.o
In file included
2012 Sep 01
1
Vectorial analogue of all.equal()?
Greetings All.
Once again, I am probably missing something fairly accessible,
but since I can't find it I'd welcome advice!
I have a dataframe derived from a text file of data in tabular
format. For one of the variables, say X, I want to select the
subsets which in which X equals a particular value.
Such values are given in the text file like: 2.3978953, and each
such value will occurr
2007 Mar 12
1
Export successively displayed graphics
Hello,
I am running R version 2.4.1 on Debian.
I am using some R functions which produce several graphics displayed
successively with an interactive prompt between each graph. For example,
the plot.varest (vars) function produces such output (one graph per time
series on which the VAR model is fitted). Plots on GARCH models also
produce such outputs.
Moreover, the frontend I am using for R
2008 May 24
1
Spatial Overlay - SQL - Geoprocessing
Can we by any change perform in R something similar geoprocessing or, more
advanced, Spatial SQL over vectorial data?
Paulo
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2011 Aug 15
1
Font size R
Hi everyone.
I'm using this following code:
pdf(file="Fig5.pdf", width = 4.86, height = 6.29, pointsize = 10, family
='Times')
par(mfcol = c(3,2), mai = c(0.4,0.8,0,0), omi = c(0.7, 0, 0.7, 0.1));
hist( rnorm(100) )
dev.off()
When I open this in any vectorial software (like Illustrator), it says that
my font size is 7 instead of 10 that I specified.
I have tried
2016 Jul 25
2
Duda sobre construccion de vectores
Hola buenas tardes comunidad, seguro que hay algo fácil, pero se me escapa y es que estoy hoy algo torpe seguramente, a ver me gustaría hacer lo siguiente:
Dada una matriz M (que puede ser muy grande), me gustaria crear un vector, sin usar bucles (ya que cuando es muy grande, todo puede ser muy lento) del siguiente modo.
Para cada una de sus filas, me gustaría seleccionar un único elemento de una
2000 Mar 02
1
Graphs in Windows 95/95
Dear R-Listers,
I'm a new R user and I've got some problems with copying/saving graphs in
Windows Metafile Format.
If I copy a graph from the R window (in Enhanced Metafile Format) and then
paste it in WinWord 95, then everything is fine, apart from the fact that
a) lines become a little bit thicker when the graph is printed; and b)
dotted lines loose a little bit of resolution.
However,
2015 Dec 10
3
SVM hadoop
Estimados
Un día leí algo en el siguiente hipervínculo, pero nunca lo use.
http://blog.revolutionanalytics.com/2015/06/using-hadoop-with-r-it-depends.html
Javier Rubén Marcuzzi
De: Carlos J. Gil Bellosta
Enviado: miércoles, 9 de diciembre de 2015 14:33
Para: MªLuz Morales
CC: r-help-es
Asunto: Re: [R-es] SVM hadoop
No, no correrán en paralelo si usas los SVM de paquetes como e1071.
No
2016 Jul 25
2
Duda sobre construccion de vectores
Creo que me puede valer, muchas gracias Jorge, voy a probarlo y te cuento
From: jorgeivanvelez en gmail.com
Date: Mon, 25 Jul 2016 12:05:05 -0500
Subject: Re: [R-es] Duda sobre construccion de vectores
To: fjroar en hotmail.com
CC: r-help-es en r-project.org
Buenas tardes, Francisco.
Quizás no sea la manera mas eficiente, pero proporciona el resultado que buscas:
R> M <-