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Date |
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Date |
Overview
Date class is for an epoch of time, which is the forth dimension in spatial data. Two handy class function of an 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 |