Displaying 20 results from an estimated 2000 matches similar to: "Help finding the mode and maximum for a specified 'window' of time series data"
2009 Oct 28
1
Need help locating the longest series of consecutive numbers in a matrix
I need to determine the length of the longest series of consecutive numbers
(1's to be specific) and the start time of that series. For example, in the
following sample, the first column is "time" and the second column indicates
the presence of the target behavior.
I would like a function that would return "21" as the start time and "17" as
the length.
sample
2010 Aug 30
1
Help With Post-hoc Testing
I am trying to do post-hoc tests associated with a repeated measures
analysis with on factor nested within respondents.
The factor (SOI) has 17 levels. The overall testing is working fine, but I
can''t seem to get the multiple comparisons to work.
The first step is to "stack" the data.
Then I used "lme" to specify and test the overall model.
Finally
2006 Aug 11
1
x tick labels - sparse?
Hi,
I'm stuck on creating a plot with x tick labels for every Nth tick
mark - how is that done? I don't see a simple solution to this in
help(plot) or help(par) and what I've tried is not working, eg, the
following does not work, although it seems intuitive to me that it
should work:
x <- seq(-100,1000,25)
y <- x * x
% find all the x values that are multiples of 100
tmp <-
2008 Jan 08
1
using lapply()
useR's,
I am trying to find a quick way to change some values in a list that are
subject to a condition to be NA. Consider the 3x1 matrix:
delta <- matrix(c(2.5,2.5,1), nrow = 1)
And consider the list named v that has 3 elements
> v
v[[1]]
[,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10] [,11] [,12]
[,13] [,14]
[1,] 4.25 3.25 2.25 1.25 0.25 0.75 1.75 2.75 3.75 4.25
2008 Oct 03
1
NA's in segmented
I am trying to fit a very simple broken stick model using the package
"segmented" but I have hit a roadblock.
> str(data)
'data.frame': 18 obs. of 2 variables:
$ Bin : num 0.25 0.75 1.25 1.75 2.25 2.75 3.25 3.75 4.25 4.75 ...
$ LnFREQ: num 5.06 4.23 3.50 3.47 2.83 ...
I fit the lm easily:
> fit.lm<-lm(LnFREQ~Bin, data=id07)
But I keep getting an error
2009 Aug 13
1
R code to reproduce (while studying) Bates & Watts 1988
Hi R users,
I'm here trying to understand correlated residuals in nonlinear estimation.
I'm reading/studying the book Bates, D. M. and D. G. Watts, (1988),
/Nonlinear regression analysis and its applications/, Wiley, NY. pages
92-94, trying to reproduce the figures and to find out the code in R to
perform the necessary calculations.
I also consulted Pinheiro and Bates, but without
2004 Feb 06
3
quantile function
I am trying to `cut' a continuous variable into contiguous classes
containing approximately an equal number of observations. I thought
quantile() was the appropriate function to use in order to find the
breakpoints, but I end up with classes of different sizes - see
example below. Does anybody have an explanation for that? And what is
the `recommended' way of computing what I am looking
2013 Feb 28
2
Ayuda con función tapply
Hola Compañeros,
Estoy tratando de "contar" utilizando la función tapply y length y obtengo
un error que no entiendo. Agradecería su ayuda.
Las líneas son las siguientes:
UNO <- subset (datos, CRIH2008 == "VERDADERO")
dim (UNO)
Abund2008 <- tapply (UNO$Cons, list(UNO$Site, UNO$Trat), length, na.rm=T)
Y obtengo este error:
Error en FUN(X[[1L]], ...) :
2 arguments
2014 Aug 25
5
problema con campos que tienen formato fecha
Hola Javier,
Muchas gracias por responder tan rápido!
Yo trabajo en Mac OS X 10.9.4.
Versión 0.98.953 de RStudio.
Versión 3.0.2 (2013-09-25) de R.
##
Este es el script que estoy trabajando. Se trata de una rutina para
automatizar el cálculo de la duración del evento.
setwd("/Users/angelacamargosanabria/Documents/ANGELITA/1-DOC/1-TESIS/4-PAPERS/1-Mamiferos/DATOS/Bases")
BASE <-
2009 Jun 18
1
recovering the name of a given value in a matrix
Hi all,
I've got object *cumsumtab, *where the first row (1,2,3,4,5,6,8,13,14,17,40)
are names (actually, categories), and the second row has numeric values.
> cumsumtab
1 2 3 4 5 6 8 13 14 17 40
2 4 6 7 9 11 13 14 15 16 17
I'm trying to find a way of finding to which category ( in *names(cumsumtab)
* ) belongs a given value (let's say Q1 <- 4.25). So far, I've
2011 Mar 23
2
información sobre símbolos
Buenos días a todos,
Una pregunta muy sencilla, podrían por favor informarme dónde puedo conocer
el significado de símbolos como $, %, == que se utilizan frecuentemente en
R?
Gracias,
Angela C.
----
*Angela Andrea Camargo Sanabria*
Estudiante Doctorado en Ciencias Biológicas
Laboratorio de Ecología de poblaciones y comunidades tropicales
Centro de Investigaciones en Ecosistemas (CIEco)
UNAM,
2009 Jul 29
3
Installing lme4 package in Windows Vista
Hi all,
I have a problem with package installing in Windows, on my PC machine. The
end goal is to be able to use the lme() function. Here's what I did so far:
> install.packages("lme4")
Warning in install.packages("lme4") :
argument 'lib' is missing: using
'C:\Users\Angela\Documents/R/win-library/2.9'
--- Please select a CRAN mirror for use in this
2016 Sep 07
3
tips para curso introductorio de R
Gracias chicos por sus opiniones y recomendaciones.
Como dice Javier Rubén, justo lo que quiero es que los chicos aprendan bien
los fundamentos de un lenguaje de programación orientado a objetos para que
no solo copien el script de una librería, corran y ya. Quisiera que
comprendieran los beneficios de R en términos de manipulación de sus bases
de datos y optimización de procesos a través de los
2012 Jun 06
2
pregunta sobre libro de Legendre
Hola a todos,
Por casualidad alguno que tenga el libro de Legendre de Numerical Ecology
with R sabe dónde o cómo bajar los data sets que se mencionan para seguir
los ejemplos?
Muchas gracias por su ayuda!
----
*Angela Andrea Camargo Sanabria*
Estudiante Doctorado en Ciencias Biológicas
Laboratorio de Ecología de poblaciones y comunidades tropicales
Centro de Investigaciones en Ecosistemas
2012 Dec 14
2
una programación sencilla
Hola a todos,
Escribo para preguntarles sobre cómo programar algo, que estoy segura es
algo bastante sencillo para muchos de Uds que tienen amplia experiencia
programando. Lo describo a continuación.
Tengo una base de datos (file = datos) de especies (de plantas) en donde
cada fila es un individuo de una especie con ciertos atributos (alrededor
de 1500 filas = individuos). Quería anexar en esta
2006 May 24
6
newbie question: missing template
Hi
I''m new to this forum and new to Rails so excuse me if this is a daft
question.
I''m following the ONLamp.com tuturial and all has been well untill
changing the template for the recipes. I have followed the instructions
and added this code to the controller:
class RecipeController < ApplicationController
scaffold :recipe
def list
@recipes = Recipe.find_all
end
2005 Mar 23
9
multiple vpn connections out via shorewall
Hi All,
Just joined the list to try and solve a problem.
To show that I''ve read the rules I''ll start with the requested info
os linux kernel-2.4.27 with latest netfilter pom for gre and pptp conntrack
etc
iptables is 1.3.0 - downloaded and compiled with the pom stuff and the 2.4.27
kernel
shorewall version shorewall-2.2.1-2 from rpm
ip addr show
[root@squid3 root]# ip addr
2012 Dec 04
5
Network traffic tool
Hi everybody, I have my firewall with shorewall runing and I dont have a
proxy.
I would like to know which tool can I use to log my web traffic from my
users.
I have ntop working but I dont think this tool helps me on this.
Any suggestion?
Thanks
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2005 Jan 26
2
networks in R
Good afternoon,
do you know if R provides a special package to make networks ?
Thank you,
Angela
2012 Jan 31
6
Shorewall and sshdfilter
Hi All!
Been quite a few years and lots of water under the bridge but here I am back!
I have a customer that has now decided they need a bit more bandwidth over and
above their fixed line! They are not in a good area for ADSL because of copper
theft and being a bit to far from the closest DSLAM! They have installed a
wireless link and I have made certain that put it behind my simple iptables