Date
 

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Overview

Date class is for an epoch of time, which is the forth dimension in spatial data.  Two handy class functions of a date object are "jd" and "dow", which are used to calculate a Julian Date and the day-of-week.

 

Member data

Name data type Meaning
year int year number
month int month number
day int day number
time double time

 

Operator

no operator provided.

 

Construction function

{Date} ret  =  DATE([{int} argm1, {int} argm2, {int} argm3, {double} argm4])

argm1 = year number    (default = 1960)

argm2 = month number   (default = 12)

argm3 = day number     (default = 9)

argm4 = time           (default = 0.000)

Example:

->epoch_1 = Date(2001,12,15,deg(13.302516))

an epoch at 13 hr 30 min 25.16 sec on Dec 15, 2001

 

Lfunction

object.YEAR()   =  {int} left-value

object.MONTH()  =  {int} left-value

object.DAY()    =  {int} left-value

object.TIME()   =  {double} left-value

Example:

->S.time() = deg(1.301256)

 

Class function

 DAY  DOW INIT JD MONTH
 TIME  YEAR      

 


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