Hello,
Maybe from here ?
http://www.ie.boun.edu.tr/~hormannw/BounQuantitiveFinance/Thesis/SilaHALULU.pdf
HTH
Pascal
On Fri, May 2, 2014 at 11:11 AM, prachi jain
wrote:
> Hey, I am trying to find some of the following functions in R packages:
>
> MLEt
>
> pt3
>
> cormatrix2vector
>
> ParameterEs
Hello togehter,
i have a litte problem. I have a data.frame with a view entries like this
one:
1
A Marius Muller -\nIT Services
B Rockwood\nBrockhues
C Microlog Services\nMarcos
D Firefox Services
I now want only the first description in the column until the "\n". How can
i do this
I have a symmetric matrix, X, and I just want the first K eigenvectors
(those associated with the K largest eigenvalues). Clearly, this works:
eigs <- eigen( X, symmetric=TRUE )
K_eigenvectors <- eigs$vectors[ , 1:K ]
K_eigenvalues <- eigs$values[ 1:K ]
rm(eigs)
In order to do that, I have t
Hello,
Something like that?
x <- c('Marius Muller -\nIT Services','Rockwood\nBrockhues','Microlog
Services\nMarcos','Firefox Services')
x <- sapply(strsplit(x, '\n'), '[', 1)
x
[1] "Marius Muller -" "Rockwood" "Microlog Services"
[4] "Firefox Services"
Regards,
Pascal
On Fri, May 2,
works perfect, thank you :-)
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I wish to return " True" in a matrix for only the first match of a value
per row where the value equals that in a vector with the same number of
values as rosw in the matrix
eg:
A<-matrix(c(2,3,2,1,1,2,NA,NA,NA,5,1,0,5,5,5),5,3)
B<-c(2,1,NA,1,5)
desired result:
[,1] [,2] [,3]
[1,] TRUE FA
On 02-05-2014, at 09:17, Mike Miller wrote:
> I have a symmetric matrix, X, and I just want the first K eigenvectors (those
> associated with the K largest eigenvalues). Clearly, this works:
>
> eigs <- eigen( X, symmetric=TRUE )
>
> K_eigenvectors <- eigs$vectors[ , 1:K ]
> K_eigenvalues <-
You want to have a look at the R Spatial Task View for starters...
GML files can be read by the rgdal package's readOGR function. But be
warned GML is a complex beast.
For example, I downloaded canvec_gml_AB_EN.zip from that site, it unzips to
a GML (and an xsd) with a lot of layers, some of
Hi,
Try:
indx <- A==B
t(apply(indx,1,function(x) {x[duplicated(x) & !is.na(x)] <- FALSE; x}))
# [,1] [,2] [,3]
#[1,] TRUE FALSE FALSE
#[2,] FALSE NA FALSE
#[3,] NA NA NA
#[4,] TRUE NA FALSE
#[5,] FALSE TRUE FALSE
A.K.
On Friday, May 2, 2014 4:47 AM, nevil amos wrote:
Hi Nevil,
Try
apply(A, 2, function(x) x == B)
HTH,
Jorge.-
On Fri, May 2, 2014 at 6:46 PM, nevil amos wrote:
> I wish to return " True" in a matrix for only the first match of a value
> per row where the value equals that in a vector with the same number of
> values as rosw in the matrix
>
Hi,
Try:
dat <- structure(list(`1` = c("Marius Muller -\nIT Services",
"Rockwood\nBrockhues",
"Microlog Services\nMarcos", "Firefox Services")), .Names = "1", class =
"data.frame", row.names = c("A",
"B", "C", "D"))
dat$`1` <- gsub("\n.*","",dat$`1`)
dat
# 1
#A Marius Muller
Hi,
I am trying to create multiple orthogonal designs using the Conjoint
package. I have 4 factors with 5 levels in each.
library(conjoint)
experiment<-expand.grid(
price<-c("a1","a2","a3","a4","a5"),
tag<-c("b1","b2","b3","b4","b5"),
smell<-c("c1","c2","c3","c4","c5"),
aroma<-c("f1","f2"
Exactly.
The syntax is intended to mimic eigs() in Matlab and Octave.
library(rARPACK)
eigs(X, 10) # If your X is of class "dsyMatrix"
eigs_sym(X, 10) # If X is of class "matrix"
Best,
Yixuan
2014-05-02 4:48 GMT-04:00 Berend Hasselman :
>
> On 02-05-2014, at 09:17, Mike Miller wrot
Hi,
Try:
dat <- read.table(text="Person Time Change
2 0 3
2 10 5
2 15 7
3 0 4
3 5 2",sep="",header=TRUE)
dat1 <- transform(dat,Count= ave(rep(1,nrow(dat)), Person, FUN=cumsum))
#or
##If it is ordered by Person
dat2 <- transform(dat, Count= setNames(se
Your original code, as a function of 'm' and 'bins' is
f0 <- function (m, bins) {
t(apply(m, 1, function(x) hist(x, breaks = bins, plot = FALSE)$counts))
}
and the time it takes to run on your m1 is about 5 s. on my machine
> system.time(r0 <- f0(m1,bins))
user system elapsed
4.950.0
And since as.integer(cut(x,bins)) is essentially findInterval(x,bins)
(since we throw away the labels made by cut()), I tried using
findInterval instead of cut() and it cut the time by more than half,
so your 5.0 s. is now c. 0.1 s.
f3 <- function (m, bins)
{
nbins <- length(bins) - 1L
m <-
Hi all - I am trying to parse out the attached XML file into a data frame.
The file is extracted from Hadoop File Services (HFS). I am new in using the
XML package so need some help in parsing out the data. Below is some code
that I explore to get the attribute into a data frame. Any help is
apprec
Dear R-Users,
i have to questions about plotting a forest plot with the metafor package:
1) Is there a (text()) function to add additional information (e.g.
heterogeneity statistics) under the forest plot?
2) I want to add various columns of additional information about each
study (e.g. qualit
By dafault, write.csv will change the characters such as "5/38" as a date
"May-38". How can I not change the format?
Thanks.
ChangJiang
[[alternative HTML version deleted]]
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I would like to encode/decode some text with deflate/gzip, but I'm
having trouble.
Decoding values from a rawConnection is fairly straightforward, but
I'm having trouble encoding values and then retrieving them.
> gz_out <- gzcon(raw_out <- rawConnection(raw(0),open="wb"))
> writeLines("test",con
Read your Excel documentation. AFAIK, R just writes text files -- you
need to tell Excel how to read them in.
Cheers,
Bert
Bert Gunter
Genentech Nonclinical Biostatistics
(650) 467-7374
"Data is not information. Information is not knowledge. And knowledge
is certainly not wisdom."
H. Gilbert Wel
ChangJiang:
Open the .csv file with Notepad or other plain vanilla text processor,
NOT EXCEL. You will find that the columns are text. Excel
automatically converts them to dates. Read Excel's docs or get help
from someone to learn how to convert the dates back to text.
-- Bert
Bert Gunter
Gene
Hi ChangJiang,
Date conversion is one of the biggest headaches with Excel. Even if you
import those data into Excel and then specify that the column should be
"text" format, it won't convert the values back into what they
originally were. Be aware that Excel may, when encountering dates from a
Thank you, and thanks for writing that code! That is the perfect answer
to my question. I hope the R development team will consider expanding the
functionality of eigen() to include the option to retain only the first
few eigenvectors and/or eigenvalues. To me it seems very common in
statist
Thanks. I still didn't get the solution. For example, I have a data frame,
called temp
> temp
Chr Ref Var AFFUNAFF AFF.test pvalue
1 10 A G 2/1/240/0/1905/49 2.429e-09
2 18 G A 1/9/17 0/23/167 11/43 2.484e-04
3 1 G A 2/2/220/8/176 6/
Hi,
How do I do something like this without using sqldf?
a <- sqldf("SELECT COUNT(*) FROM b WHERE c = 'd'")
or
e <- sqldf("SELECT f, COUNT(*) FROM b GROUP BY f ORDER BY f")
greetings, el
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This works great, thanks a lot!
-AOB
-Original Message-
From: William Dunlap [mailto:wdun...@tibco.com]
Sent: Friday, May 02, 2014 12:31 PM
To: Ortiz-Bobea, Ariel
Cc: r-help@r-project.org
Subject: Re: [R] speeding up applying hist() over rows of a matrix
And since as.integer(cut(x,bins))
Hello,
I'm trying to figure out how to panel scatter plots of participant data in R
using the ggplot2 package. I do not want to display separate variables, I
simply want to create a 4 by 4 or 5 by 5 grid of scatter plots that represent
the data of each individual participant since I am looking
Are you looking for facet_wrap? facet_grid usually has two grouping variables...
---
Jeff NewmillerThe . . Go Live...
DCN:Basics: ##.#. ##.#. Live Go...
Dear List,
I'm looking for well-commented versions of various functions comprising
mgcv, so that I can modify a piece of it for a project I'm working on.
In particular I'm looking for
* testStat
* summary.gam
* liu2
* simf
Obviously I can find these by typing mgcv:::whatever. But the
Hi,
With the new package "dplyr" you can create equivalent SQL sintaxt queries
like the one you need.
You can find examples of how to apply it here:
http://martinsbioblogg.wordpress.com/2014/03/26/using-r-quickly-calculating-summary-statistics-with-dplyr/
http://martinsbioblogg.wordpress.com/201
Read the Posting Guide, which points out that this list is for plain text
emails so you should set your email program appropriately.
Read the Writing R Extensions document, which tells you how packages are
constructed, and from which it will become clear that you want the tar.gz
package file fo
Hi
I second Jim's comments.
I have also been bitten by British being converted to American format as
well as ANSI numeric to a date format which I did not want .
And if you want to take a daily series from the 1890's to the 2000's caveat
emptor.
If you are dealing with dates use something that
By making the effort to learn R?
See e.g. the "Introduction to R" tutorial that ships with R.
-- Bert
Bert Gunter
Genentech Nonclinical Biostatistics
(650) 467-7374
"Data is not information. Information is not knowledge. And knowledge
is certainly not wisdom."
H. Gilbert Welch
On Fri, May 2
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