R: as.POXIXct for number of seconds since the start of 1970.

as.POSIXct1970 {fda} | R Documentation

## as.POXIXct for number of seconds since the start of 1970.

### Description

as.POSIXct.numeric requires orgin to be specified. This assumes that is the start of 1970.

### Usage

    as.POSIXct1970(x, tz="GMT", ...)

### Arguments

`x` | a numeric vector of times in seconds since the start of 1970. (If `x` is not numeric, call `as.POSIXct`.)
`tz` | A timezone specification to be used for the conversion, if one is required. System-specific (see time zones), but "" is the current timezone, and "GMT" is UTC (Universal Time, Coordinated).
`...` | optional arguments to pass to as.POSIXct.

### Details

o1970 <- strptime('1970-01-01', ' o1970. <- as.POSIXct(o1970) as.POSIXct(x, origin=o1970.)

### Value

Returns a vector of class `POSIXct`.

### Author(s)

Spencer Graves

### See Also

`as.POSIXct`, `ISOdate`, `strptime` `as.Date1970`

### Examples

    sec <- c(0, 1, 60, 3600, 24*3600, 31*24*3600, 365*24*3600)
    Sec <- as.POSIXct1970(sec)

    all.equal(sec, as.numeric(Sec))

[Package fda version 2.4.8 Index]