similar to: plotting every ith data point?

Hi, I render a couple of date_select fields, the HTML looks fine, I can see the values submitted back to the server, but AR doesn''t pick them up from the hash in Booking.new(params[''booking'']). I''ve got a ''booking'' object with parameters product, startdate and enddate. HTML snippets: <select

I must be stupid because this cannot be this hard. I''m trying to build an all day calendar event. In most clients it shows up as an entry at the top of the day rather than blocking out the whole day with an event. I have a bit of code that looks like this... cal.event do dtstart DateTime.parse("#{startDate.year()}-#{startDate.month()}-#{startDate.day()}") dtend

Hi, I would like to make @dates in my controller. I tried the following: startdate = Time.now enddate = startdate.next_week for enddate > startdate @dates << startdate startdate = startdate.tomorrow end But I get an errormessage when I check the syntax: "warning: useless use of a variable in void context" Anyone? Thanks! Steven. -- Posted via

Hi R, How to get the range of values form startDate to lastDate as given below?. #***************************************************************** # Load historical data #****************************************************************** library('quantmod') endDate =Sys.Date() startDate = as.Date(endDate-30, order="ymd") dataspy = getSymbols("SPY", from = startDate,

in my booking / _form I have the following input fields : (startdate and endate) <div> <label for="startdate">Booking Start Date</label><br /> <%= text_field_tag(''startdate'', @startdate, {:class => @startdateclass, :readonly => "readonly", :maxlength => "25"} ) %> <%= observe_field("startdate",

I am having trouble with creating a POSIXct object. If I create a variable of class Date first out of the date part of my data, I am ok, but if I just paste the date and time parts together and try and create the POSIXct object, I have problems. Here is a toy example created from the actual data which caused the problem. I am using R 2.0.1 on Windows XP. > # Data frame with dates and

I am using the date_select helper to generate date select elements in a form. I notice that the generated HTML shows that these selects have the following names: Month: current_job[StartDate(2i)] Day: current_job[StartDate(3i)] Year: current_job[StartDate(1i)] I''m assuming that the Xi identifiers somehow specify the appropriate date part from a date or time value. Can anyone

Hi All, I am iterating through dated materials, with variable start and end dates, and would like to skip procedures everytime I encounter a weekend or holiday. To do this, I thought the easiest way would be to create a TRUE/FALSE vector corresponding to each day where it is TRUE if a workday, and FALSE if a weekend or holiday. So far I have been able to do this for weekdays: startDate <-

Hello - This is not a real problem, just an annoyance. Sometimes, but not always, I get a set of strange warnings from hist(). Example follows. ############################ #Produce a histogram of start dates for a set of field measurements. # I didn't reproduce all the dates, because not sure it's relevant, but here's a sample. # Note the invalid date in the fifth element. >

Hi My data looks like this startDate="2008-06-01" dateRange =c( "2008-10-01","2008-12-01") Is there any method to find the week number from the startDate range ----- Thanks in Advance Arun -- View this message in context: http://r.789695.n4.nabble.com/Week-number-from-a-date-tp4410223p4410223.html Sent from the R help mailing list archive at Nabble.com.

I have the following function myGetstockdataMySQL <- function(startdate, enddate, ticker) { con <- dbConnect(MySQL(), user="blahblah", password="blahblah", dbname="blahblah", host="localhost") rs <- dbGetQuery(con, "SELECT price.close FROM price INNER JOIN stocks ON stocks.stock_id=price.stock_ID WHERE (price.date_holding BETWEEN

Hey guys, So I'm working with a project where I manage a database within R, and I'm developing a script/function that will automatically run my queries in R depending on the date parameters passed in. The problem is that when I create variables for the dates, and use those variables in my sqldf statements, R says that there is no such column in the dataframe (which is true!). My question

I can't get the scales parameter in xyplot of lattice to work as I expected. I'm using R-2.1.0 and lattice 0.11-8. There should be year labels from 1992 to 2004 for the x axis in the plot below, but instead only a few of them appear, and in the wrong spots, as if the coordinate system has changed after finishing with the panel function. library(chron) library(lattice) # vertical grid

hi folks. i want to check if a param exists if not to set it to a default value for my date range filter. in my controller i have: @from_date = Date.strptime(params[:startdate],"%d/%m/%Y") @to_date = Date.strptime(params[:enddate],"%d/%m/%Y") @articles = @results.find(:all, :conditions => [ "created_at >= ? and created_at

Hi, I have a dataframe with many columns, including date and I want to keep only a few of the columns including date column. I used the following command: with(FireDataAppling, cbind(STARTDATE, County, TOTAL, CAUSE) It works, but the date becomes days from Jan 1, 2001. FireDataAppling$STARTDATE[1] gives [1] 2001-01-04 00:00:00 1703 Levels: ......... After the cbind command, the entry

Hi R, The dates when exported from Excel to R by "Put R Var", gives one less day. For example, 1. Let 1/1/2011 be the cell A1 in date format. 2. Right click and select "Put R Var" and give a name to it say, "StartDate" (R in foreground process) 3. In the R console see the value stored in "StartDate" 4. The output is: > StartDate

Ok, Here''s my controller: def create trainingplan = Trainingplan.createplan(@params[:startdate], @params[:enddate], @params[:hoursperweek], @params[:programtype]) end My model is: class Trainingplan <ActiveRecord::Base def self.createplan(stardate, enddate, hoursperweek, programtype) stardate = startdate enddate = enddate hoursperweek = hoursperweek programtype

Hi all, I am not exactly fluent in R and I got stuck with this. I would like to compare each elements of a vector A with any of the elements in Vector B. For some reasons it does not work. > StartDate = as.Date("01/10/2007", "%d/%m/%Y") > TimeSpan = seq(StartDate, by = 'days', length = length(myAverageCWVs$X1986)) > TickLabels = c("2007-10-01",

Hello fellow R people, I don't understand the default behavior of the axis labeling when plotting dates. I would expect something like 2001, 2002 or possibly Jan 01, Jan 02...Jan 06, but instead I only see Jan 01, Jan 01, Jan 01.... See the following example startdate <- strptime("2001-01-01",format="%Y-%m-%d") enddate <-

HI I want to create a dummy variable for a dataset which has various dates Eg I've one year data. The user can choose any date range startdate : 2012-01-01 enddate: 2012-02-01 startdate: 2012-06-01 enddate=2012-07-01 the columns of dataset= X ,Y ,date Thanks and re ----- Thanks in Advance Arun -- View this message in context: