date

问题 I've a field and applying datepicker on it using jQuery. it is currently getting time from system/browser. I want it to get time from specific time zone e.g America/new_york. The endDate param is the key to set the calendar, means user should not be able to select the date from future. Currently it is looking like this The code snippet is : jQuery('#convo_start_date').datepicker({ format: 'dd M yyyy', endDate: '+0d', autoclose: true, showButtonPanel: true, todayBtn: 'linked' }).on('change',

问题 I would like to move down my entire data by a factor of two months. For example, if my data starts on Jan 01, i want to move the data in such a way that the data corresponds to March 01. Likewise, November data would become January data for the next year. Here is my sample code DF <- data.frame(seq(as.Date("2001-01-01"), to= as.Date("2003-12-31"), by="day"), A = runif(1095, 0,10), D = runif(1095,5,15)) colnames(DF) <- c("Date", "A", "B") I tried DF$Date <- DF$Date + 61 but this moved the

问题 I would like to move down my entire data by a factor of two months. For example, if my data starts on Jan 01, i want to move the data in such a way that the data corresponds to March 01. Likewise, November data would become January data for the next year. Here is my sample code DF <- data.frame(seq(as.Date("2001-01-01"), to= as.Date("2003-12-31"), by="day"), A = runif(1095, 0,10), D = runif(1095,5,15)) colnames(DF) <- c("Date", "A", "B") I tried DF$Date <- DF$Date + 61 but this moved the

问题 i'm new to MOXy and JaxB in general and I'm facing a problem with java.util.Date conversion. I'm unmarshaling an XML file (which I have no control of) to objects using a mapping file (I can neither manually annotate existing classes nor change them). My XML mapping file looks like this : <?xml version="1.0"?> <xml-bindings xmlns="http://www.eclipse.org/eclipselink/xsds/persistence/oxm" version="2.1"> <java-types> <java-type name="Observation"> <xml-type prop-order="date theoricalTime ci ch cr

问题 i'm new to MOXy and JaxB in general and I'm facing a problem with java.util.Date conversion. I'm unmarshaling an XML file (which I have no control of) to objects using a mapping file (I can neither manually annotate existing classes nor change them). My XML mapping file looks like this : <?xml version="1.0"?> <xml-bindings xmlns="http://www.eclipse.org/eclipselink/xsds/persistence/oxm" version="2.1"> <java-types> <java-type name="Observation"> <xml-type prop-order="date theoricalTime ci ch cr

问题 This question already has answers here : Why does Date.parse give incorrect results? (11 answers) Closed 4 years ago . I feel like I am missing something here. The Date.getDay() method is supposed to return a value from 0-6. 0 for Sunday and 6 for Saturday. Now I have two dates, both are 'Sunday' which should return 0. new Date('1990-11-11').getDay() // returns 6 new Date('2016-1-3').getDay() // returns 0 What is causing the discrepancy? I dare to question the validity of the .getDay() method

问题 This question already has answers here : Why does Date.parse give incorrect results? (11 answers) Closed 4 years ago . I feel like I am missing something here. The Date.getDay() method is supposed to return a value from 0-6. 0 for Sunday and 6 for Saturday. Now I have two dates, both are 'Sunday' which should return 0. new Date('1990-11-11').getDay() // returns 6 new Date('2016-1-3').getDay() // returns 0 What is causing the discrepancy? I dare to question the validity of the .getDay() method

问题 Does the YYYY-MM-DD HH:MM:SS datetime format have a special name? I am writing a function that returns a date in this format and I'm trying to figure out what to call the function. 回答1: I can't find a source, but in my experience (25 years working as a systems programmer in UNIX environments) this format is referred to colloquially among engineers as Yoda Time. It's not valid ISO 8601 because it uses a space instead of a T to separate the date and time parts. 回答2: It looks a lot like ISO 8601

问题 Does the YYYY-MM-DD HH:MM:SS datetime format have a special name? I am writing a function that returns a date in this format and I'm trying to figure out what to call the function. 回答1: I can't find a source, but in my experience (25 years working as a systems programmer in UNIX environments) this format is referred to colloquially among engineers as Yoda Time. It's not valid ISO 8601 because it uses a space instead of a T to separate the date and time parts. 回答2: It looks a lot like ISO 8601

问题 I have data that formats dates like so: Tue Oct 25 2016 Tue Oct 25 2016 Tue Oct 25 2016 Wed Oct 26 2016 Wed Oct 26 2016 Wed Oct 26 2016 I would like this to be in a format in which R can use it as a date (i.e. 2016-10-25 ). Any help? 回答1: Edit : I somehow missed that you had the day of the week as well. This can also be done in base using as.Date with the correct formatting string. In this case %a would give you the abbreviated day of the week, %B will give you the month abbreviation, %d will