sts_combine {MazamaTimeSeries}

Combine multiple sts time series objects

Description

Create a merged timeseries using of any number of sts objects for a single sensor. If sts objects are non-contiguous, the resulting sts will have gaps.

An error is generated if the incoming sts objects have non-identical deviceDeploymentIDs.

Usage

sts_combine(..., replaceMeta = FALSE)

Arguments

...

Any number of valid SingleTimeSeries sts objects associated with a single deviceDeploymentID.

replaceMeta

Logical specifying whether to allow replacement of metadata.

Value

A SingleTimeSeries sts time series object containing records from all incoming sts time series objects. (A list with meta and data dataframes.)

Note

Data are combined with a "later is better" sensibility where any data overlaps exist. To handle this, incoming sts objects are first split into "shared" and "unshared" parts.

Any "shared" parts are ordered based on the time stamp of their last record. Then dplyr::distinct() is used to remove records with duplicate datetime fields. Any data records found in "later" sts objects are preferentially retained before the "shared" data are finally reordered by ascending datetime.

The final step is combining the "shared" and "unshared" parts.

Examples

library(MazamaTimeSeries)

aug01_08 <-
  example_sts %>%
  sts_filterDate(20180801, 20180808)

aug15_22 <-
  example_sts %>%
  sts_filterDate(20180815, 20180822)

aug01_22 <- sts_combine(aug01_08, aug15_22)

plot(aug01_22$data$datetime)