Datetime filtering for *pat* time series objects

Source: R/pat_filterDatetime.R

Subsets a *pat* object by datetime. This function allows for sub-day filtering as opposed to `pat_filterDate()` which always filters to day-boundaries.

Datetimes can be anything that is understood by `MazamaCoreUtils::parseDatetime()`. For non-`POSIXct` values, the recommended format is `"YYYY-mm-dd HH:MM:SS"`.

Timezone determination precedence assumes that if you are passing in `POSIXct` values then you know what you are doing.

  1. get timezone from `startdate` if it is `POSIXct`

  2. use passed in `timezone`

  3. get timezone from `pat`

pat_filterDatetime(
  pat = NULL,
  startdate = NULL,
  enddate = NULL,
  timezone = NULL,
  unit = "sec",
  ceilingStart = FALSE,
  ceilingEnd = FALSE
)

Arguments

pat

*pat* object.

startdate

Desired start datetime (ISO 8601).

enddate

Desired end datetime (ISO 8601).

timezone

Olson timezone used to interpret dates.

unit

Units used to determine time at end-of-day.

ceilingStart

Logical instruction to apply [lubridate::ceiling_date()] to the `startdate` rather than [lubridate::floor_date()]

ceilingEnd

Logical instruction to apply [lubridate::ceiling_date()] to the `enddate` rather than [lubridate::floor_date()]

Value

A subset of the incoming *pat* time series object. (A list with `meta` and `data` dataframes.)

See also

[pat_filter()]

[pat_filterDate()]