search for: chronology

I am trying to do some basic regression and ANOVA on cycle times (numeric vectors) across weekdays (character vector), where I have simply labelled my days as: days<- c("mon","tue","wed"...etc). (NOTE: There are actually multiple instances of each day, and the data is read-in from a .dat file.) I have no trouble at all with the actual number crunching, It is the

Does anybody know of any R functions to perform chronological clustering as explained in: Legendre, P., S. Dallot & L. Legendre. 1985. Succession of species within a community: chronological clustering, with applications to marine and freshwater zooplankton. American Naturalist 125: 257-288. http://www.fas.umontreal.ca/BIOL/legendre/reprints/succession_of_species.pdf Thanks, Angel

Greetings Though I have months in chronological order in my data table, the data were sampled every other month (i.e., February, April, June, August, October, December), every time I try to plot them (on the x-axis) they are plotted in alphabetical order. What am I missing? Cheers Kurt *************************************************************** Kurt Lewis Helf, Ph.D. Ecologist EEO

Hi all, I currently work on a survey which contains biographical data stored in a chronological way, ie something like : id year variable 001 2000 0 001 2001 0 001 2002 1 001 2003 0 002 1996 0 002 1997 0 002 1998 1 002 1999 0 002 2000 0 where id is a person identifier, year the year of observation and variable the

Dear colleagues, Is there a way to order list items by date? I have a series of surveys in a list where the name of each list item is the date the survey was taken but the list items are out of order. Each data frame has a variable in it with the survey date as well, if that helps. Yours, Simon Kiss #Sample Data mylist<-list('1991-01-01'=data.frame(a=rep(5,5),

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Greets Folks, I've been wrestling with how to better control plotting of time data and just can't seem to see the right path. My dataset has thousands of points distributes across a number of years. I would like to plot the responses according to increasing time with nice boundaries - perhaps integer months - along the abscissa. However, the earliest time occurs mid-month and I

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On Thu, July 23, 2015 10:45 am, Johnny Hughes wrote: > On 07/23/2015 09:34 AM, Valeri Galtsev wrote: >> >> On Thu, July 23, 2015 8:43 am, Windsor Dave (AdP/TEF7) wrote: >>>> -----Original Message----- > <snip> >>>>> Sorry for the top post, Outlook defaults strike again..... >>>> >>>> Outlook forces you to write above ? :-)

On Thu, July 23, 2015 8:43 am, Windsor Dave (AdP/TEF7) wrote: >>-----Original Message----- >>From: centos-bounces at centos.org [mailto:centos-bounces at centos.org] On >> Behalf Of Leon Fauster >>Sent: Wednesday, July 22, 2015 6:20 PM >>To: CentOS mailing list >>Subject: Re: [CentOS] rsyslog.conf >> >>Am 22.07.2015 um 17:41 schrieb Windsor Dave

Hello everyone, I have a data generated in a way similar to the following library(chron);library(zoo) date<- seq(as.Date("1990-01-01"),, as.Date("2000-12-31"), by = 1) obs<- zoo(rnorm(length(date), mean = 10, sd = 2.5), order.by = date) monthly<- function(date) as.Date(as.yearmon(Date)) result<- data.frame ( Date = obs = aggregate(obs, monthly, sum)) Now, I want

I am using the acts_as_taggable plugin, which works rather nicely by the way. My question is this: When using find_tagged_with, how do I sort the resultant data? It is currently sorting based on the "id" of the record. For instance, I have posts, with tags. If I want to find all posts tagged with "RubyOnRails" it displays them, but not in chronological order, they are

Dear R-Help Does "The R Package for Multivariate and Spatial Analysis Version 4.0 (Casgrain and Legendre, 2001)" exist on CRAN and under what name? It supposedly has a chronological clustering program ,CHRONO, that I would like to use. Alternatively, I would ask if there is a R based program that performs chronological clustering? Thanks Alex Alex Hanke Department of Fisheries and

Hello, I have to merge several serie by "date". I used: cb<-merge(cbds,cbbond,by=c("date"),all=T). I have the daily and the high frequency data. Unfortunately, the programm did not sort by "sort" my data in a chronological manner. Is there any possibility to do this in R?. Thanks in advance, Silke

Full_Name: Dennis Wolf Version: 1.9.0 OS: Mac OS 10.3.3 Submission from: (NULL) (160.91.76.23) platform powerpc-apple-darwin6.8 arch powerpc os darwin6.8 system powerpc, darwin6.8 status major 1 minor 9.0 year 2004 month 04 day

Hello dear useRs and wizaRds, I encountered the following problem using the hist() method for the 'times' classes from package 'chron'. You should be able to recreate it using the code: library(chron) # pasted from chron help file (?chron) dts <- dates(c("02/27/92", "02/27/92", "01/14/92", "02/28/92", "02/01/92")) class(dts)

> version _ platform i386-pc-mingw32 arch i386 os mingw32 system i386, mingw32 status major 1 minor 5.0 year 2002 month 04 day 29 language R OS Win98 I have problems to install some of the packages dowloaded from CRAN (whatever the

Leon Fauster wrote: > Am 23.07.2015 um 18:06 schrieb "Valeri Galtsev" > <galtsev at kicp.uchicago.edu>: >> >> On Thu, July 23, 2015 10:45 am, Johnny Hughes wrote: >>> >>> The main reason actually is chronological order. But not just for the >>> reply .. but for IN-LINE posting. >>> >>> In a discussion where you need to

Andrew Trick <atrick at apple.com> writes: > SVN revision numbers are central to my workflow. I use them to tag > results generated against various builds. I like those results sorted > by time and the chronology should be obvious, This means in the presence of branches, you want the ordering to be [branch A] build 1 [branch B] build 2 [branch A] build 3 [branch C] build 4 ? It seems to me that your solution works only if you have a very simple branch topology, where you can essentially consider branche...

Hello, I have set up a data.frame and one of the columns contains a date of the form (with slashes as separators): mm/dd/yyyy I would like to use formulas on other columns in the data.frame organized by date, for example: tapply(var1, sort(date), mean) However, when I try sort(date) it sorts based on the first two entries in the date field: 9/1/2001 9/1/2002 9/1/2003 9/2/2001 ... 5.6 7.5