search for: begindate

...n, and wanted to provide helper methods in my model class. I was confused that the class DOESN''T refer to its fields as instance variables. I merely had to type in the field names to be able to work with their data. Here''s an example: I have a "Chessgame" class with a begindate and an enddate. To get the number of hours that the game took, I wrote an "hours" method in the Chessgame class. I thought that i would reference the begindate and enddate field as instance variables, but this did not work. I had to write the code like this: ---------------------------...

..., "10:32", "13:58", "14:00", "15:22", "11:15")), .Names = c("StartDate", "StartTime"), row.names = c("1", "2", "3", "4", "5", "6"), class = "data.frame") > BeginDate <- as.Date(PeopleData.df$StartDate,format="%d/%m/%Y") > BeginDate [1] "2001-10-29" "2001-12-07" "2001-11-16" "2001-11-28" "2001-11-02" [6] "2001-11-26" > # Create POSIXct date-time object without difficulty > BeginTim...

i have time series of momentum signal. I want to get the date of each of the "-1" signal period. for example , the first period of -1 signal begins on 2005-9-21 and ends on 2005-9-28. 2nd period of -1 signal begins on 2005-09-30 and ends on 2005-10-28. Thx Cameron date Px 200MA Signals 2005-09-15 26.27 25.83865 1 2005-09-16 26.07 25.83275 1

hi all, I'm working on scrapping some website data to build a database. Under most cases, I can use package XML to get the dataset. However, some of the website doesn't give a explicit address of the downloaded tables. To be more specific, for example, I'm interested in the website http://ets.aeso.ca/ The data we are scraping is the "Pool Weekly Summary" under the

Sorry of I'm going over old ground ... We are in the process of putting in a Suse Linux OpenExchange Server (SLOX) which at present includes Samba 2.2.5*. We are also attempting to use this as a PDC for XP clients that we are going to be rolling out. Now, everything seems to be going down the pan, and it looks like the problem is that XP has dropped support for 'old style'

Hi all, I have a 2 files, one with a series of beginning and end times of animal dives in (lets call it dives). The other file is readings from a time-depth recorder, there is a datetime reading for every second, a temperature and light level reading (lets call it tdr). Now I want to say from the file dives, using the start and end time of the dives, go to the tdr file and find me the