week-number

问题 Given LocalDate I want to convert to week number since Epoch One way to do that is: LocalDate date = datePicker.getValue(); // input from your date picker Locale locale = Locale.US; int weekOfYear = date.get(WeekFields.of(locale).weekOfWeekBasedYear()); And X = find weeks since Epoch to prevYear And then result = X + weekOfYear Although someway we can find out "week number since epoch", is there clean solution to find it using Java 8 ? UPDATE: Even above solution wont work as one week(always

问题 I have a dataset with locations and dates. I would like to calculate week of the year as number (00–53) but using Thursday as the first day of the week. The data looks like this: location <- c(a,b,a,b,a,b) date <- c("04-01-2013","26-01-2013","03-02-2013","09-02-2013","20-02-2013","03-03-2013") mydf <- data.frame(location, date) mydf I know that there is strftime function for calculating week of year but it is only possible to use Monday or Sunday as the first day of the week. Any help would

问题 The following code calculates the previous week number from a given week when passed year and week . NSDateComponents *components = [[NSDateComponents alloc] init]; [components setYear:year]; [components setWeek:NSWeekCalendarUnit]; [components setWeekOfYear:(week-1)]; //Get the previous week [components setWeekday:2]; //Monday [components setTimeZone:[NSTimeZone timeZoneWithName:@"UTC"]]; NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar]; NSDate *date

问题 I tried this code on three different machines and I keep getting 28 for today's week number: Dim myCI As New CultureInfo("en-US") Dim myCal As System.Globalization.Calendar = myCI.Calendar Dim myCWR As CalendarWeekRule = myCI.DateTimeFormat.CalendarWeekRule Dim myFirstDOW As DayOfWeek = myCI.DateTimeFormat.FirstDayOfWeek Dim week As Integer = myCal.GetWeekOfYear(DateTime.Now, myCWR, myFirstDOW) It should return 27. Why do I get 28? 回答1: On my machine, I get the following values for the en-US

问题 I want to get the right week number. Using the to_char function, the function enumerate the week starting with mondey, but i want to get the week number considering that a week start on saturday. Here is an example: SELECT to_char('05-01-2013'::date,'daydd-mm-yyyy') as date_char, to_char('05-01-2013'::date,'IW') as week_number Result: "saturday 05-01-2013";"01" And should be: "saturday 05-01-2013";"02" Is there any way to get it? Config info: Postgresql 9.2 under Windows 7 回答1: This will give

问题 I have to find week number of the month from given date using JavaScript. Week start is Monday. I have tried the code below but not getting accurate result. function getWeekNumber(date) { var monthStartDate = new Date(new Date().getFullYear(), new Date().getMonth(), 1); monthStartDate = new Date(monthStartDate); var day = monthStartDate.getDay(); date = new Date(date); var date = date.getDate(); let weekNumber = Math.ceil((date + (day)) / 7); return (weekNumber == 0) ? 1 : weekNumber; } var

问题 As per ISO 8601, the first week is the week having at least 4 days and week start with Monday. For countries where the week starts with another day, like Sunday, how is the first week defined ? 回答1: Weeks can be defined in all sorts of ways. The ISO 8601 standard way (starts on Monday, week # 1 has first Thursday of year) is sensible and practical, and increasingly common. In Java and its java.time framework (see Tutorial), the standard defined behavior is encapsulated in the IsoFields class.

问题 As per ISO 8601, the first week is the week having at least 4 days and week start with Monday. For countries where the week starts with another day, like Sunday, how is the first week defined ? 回答1: Weeks can be defined in all sorts of ways. The ISO 8601 standard way (starts on Monday, week # 1 has first Thursday of year) is sensible and practical, and increasingly common. In Java and its java.time framework (see Tutorial), the standard defined behavior is encapsulated in the IsoFields class.

问题 My collection looks like below with details /* 1 createdAt:6/13/2018, 5:17:07 PM*/ { "_id" : ObjectId("5b21043b18f3bc7c0be3414c"), "Number" : 242, "State" : "2", "City" : "3", "Website" : "", "Contact_Person_Name" : "Ajithmullassery", "CreatedById" : "Admin", "UpdatedById" : "Admin", "IsActive" : true, "UpdatedOn" : ISODate("2018-06-13T17:17:07.313+05:30"), "CreatedOn" : ISODate("2018-06-13T17:17:07.313+05:30") }, /* 2 createdAt:6/13/2018, 6:45:42 PM*/ { "_id" : ObjectId(

问题 I made a page to plot average snowdepth by week number. Now that we entered 2010, week 1 my graph stretches the interval on the x-axis (yearweek). What I want is the weeknumber on the x-axis (51,52,1,2 etc), and a fixed intervalwidth. Anyone know how to do that? example <script id="source" language="javascript" type="text/javascript"> $(function () { var d1 = [ [201001,118],[200952,112],[200951,102],[200950,97],[200949,93], [200948,41],[200947,10],[200947,0]]; var d2 = [ [201001,33],[200952