date_to_sample_order {proBatch} | R Documentation

## Convert date/time to POSIXct and rank samples by it

### Description

Converts date/time columns fo sample_annotation to POSIXct format and calculates sample run rank in order column

### Usage

    date_to_sample_order(sample_annotation, time_column = c("RunDate",
      "RunTime"), new_time_column = "DateTime",
      dateTimeFormat = c("%b_%d", "%H:%M:%S"),
      new_order_col = "order", instrument_col = "instrument")

### Arguments

`sample_annotation` | data frame with: `sample_id_col` (this can be repeated as row names) biological covariates technical covariates (batches etc) . See `help("example_sample_annotation")`
`time_column` | name of the column(s) where run date & time are specified. These will be used to determine the run order
`new_time_column` | name of the new column to which date&time will be converted to
`dateTimeFormat` | POSIX format of the date and time. See `as.POSIXct` from base R for details
`new_order_col` | name of column with generated the order of sample run based on time columns
`instrument_col` | column, denoting different instrument used for measurements

### Value

sample annotation file with a new column `new_time_column` with POSIX-formatted date & `new_order_col` used in some diagnostic plots (e.g. `plot_iRT`, `plot_sample_mean`)

### Examples

    sample_annotation_wOrder <- date_to_sample_order(
    example_sample_annotation,
    time_column = c('RunDate','RunTime'),
    new_time_column = 'new_DateTime',
    dateTimeFormat = c("%b_%d", "%H:%M:%S"),
    new_order_col = 'new_order',
    instrument_col = NULL)

[Package proBatch version 1.3.0 Index]