Displaying 20 results from an estimated 2000 matches similar to: "how to convert Date to this json format"
2008 Jun 24
10
Question on passing arguments inside a view.
I''m running into an issue undefined local variable or method
`directoryid'' for #<EditorialsController:0x23f1bf8>
I have two Models on a legacy database and only one controller called
editorials with two actions index and display.
I''m trying to pass in a parameter from the results of my search and
getting the above error.
Example:
two tables one is editorial the
2006 Feb 08
6
can''t get date_select to work
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
2008 Jan 16
4
How to test if one range of dates overlaps another?
Hi all,
I have a situation with a recurring billing application where I need
to test if one range of dates "overlaps" another range of dates. Does
anyone know a rails find or mysql select statement that will test for
this? Here are the details:
* Recurringcharge items have a start_date and an end_date that
represent the period of time that the charges should occur.
* Statement items
2006 Jul 26
8
change text_field_tag class
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",
2012 Nov 02
2
Date format conversion from "2012-09-20" to "2012:09:20"
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,
2006 Feb 06
4
Basic MVC in RoR question
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
2006 Apr 25
1
Array of dates/times from time.now till nextweek
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.
--
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2011 Mar 23
1
using R variables in RMySQL query
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
2005 Jun 01
2
problem with chron scales in lattice
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
2008 Nov 19
2
Exclude holidays in a subset of dates?
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 <-
2007 Apr 03
2
Strange labels on plot with dates
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 <-
2006 May 16
1
:conditions on has_one realationship
Hi there,
I''m currently building a membership application and I want to be able
to select, not just all the memberships, but the most current
membership from the database on a per user basis. I have linked the
tables as shown:-
class Membership < ActiveRecord::Base
belongs_to :payment
belongs_to :person
end
class Person < ActiveRecord::Base
has_many :memberships
2012 Apr 09
1
Creating a dummy variable
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
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2017 Dec 18
0
Finding center of mass in a hydrologic time series
Hi Eric,
the following works for me.
HTH,
Eric
library(EGRET)
StartDate <- "1990-10-01"
EndDate <- "2017-09-30"
siteNumber <- "10310000"
QParameterCd <- "00060"
Daily <- readNWISDaily(siteNumber, QParameterCd, StartDate, EndDate)
# Define 'center of mass' function
com <- function(x) {
match(TRUE, cumsum(x/sum(x)) > 0.5) -
2006 May 07
1
Anyone care for a braindump?
I have this problem with records that have to be alligned on end- and
startdate. I came up with the following. but am not convinced that this
is the best way to tackle this problem. Anyone care for a braindump?
def head_to_tail
# Remove days that have startdate >= self.startdate AND enddate <=
self.enddate
#
# before after
#
# |=====| |=====|
2009 Feb 22
6
CHECK if param exists? please help
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
2012 Jul 11
2
Passing Multiple Variable Into SQLDF Statement as parameters of function
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
2010 Aug 29
1
calculations with dates
Hi,
I have a data.frame with factors in columns like
startdate enddate
27SEP2005 01JAN2006
How can I calculate the duration between those two dates and move this in a
extra column in the data.frame.
Thanks,
André
[[alternative HTML version deleted]]
2012 Aug 01
4
how to calculate seasonal mean for temperatures
Hello everybody,
I need to calculate seasonal means with temperature data for my work.
I have 70 files coming from weather stations, which looks like this for
example:
startdate <- as.POSIXct("01/01/2006", format = "%d/%m/%Y")
enddate <- as.POSIXct("05/01/2006", format = "%d/%m/%Y")
date <- seq(from = startdate, to = enddate, by =
2011 Jan 29
1
Basic Help with Zoo objects and trading days
All,
I have been just recently working with zoo objects for trading systems.
Can someone please help with these basic questions?
Given a daily time series downloaded using get.hist.quote() from the tseries
package, ie......
startDate= as.Date("2000-01-01")
endDate= as.Date("2011-01-29")
frequency= 'd'
s= get.hist.quote('IWF', start= startDate, end=