manual_trim_detect {densitr}

Manually select a starting or ending location of a density profile

Description

Follow-up to automatic trim functions or to be used manually, will display a plot with the density profiles. Most commonly used in automatic failure corrections by the function correct_failures. Use your mouse to select starting/ending point on the plot, your selection will then be displayed on the plot. Either returns a numeric value or NA in case of errors. There are two special cases: when encountering an error with a label = " - PICK START" it will return the starting position, and with label " - PICK STOP" it will return the ending position. These labels are used when correcting several density profiles at once using correct_failures. This function uses graphics::locator, which only works on screen devices X11, windows and quartz. It will not work on other devices, returning NA.

Usage

manual_trim_detect(failure, label = "")

Arguments

failure

A dp object, usually see dpload.

label

Optional label to be displayed on the plot after the file

Value

The x position selected on the graph, row number in the dp$data data frame.

See Also

dptrim, dptriml

Examples

## load a single file
dp <- dpload(system.file("extdata", "00010001.dpa", package = "densitr"))
## get a starting point on the plot

manual_trim_detect(dp)