disc_extract: Raw data extraction

In jiho/discr: Drifting In Situ Chamber User Software in R

Description

Extract data corresponding to one deployment from the raw data recorded by a sensor over a leg.

Usage

disc_extract(data, start, stop, dir, verbose, ...)

## Default S3 method:
disc_extract(data, start, stop, dir, verbose = FALSE, ...)

## S3 method for class 'gopro'
disc_extract(data, start, stop, dir, verbose = FALSE,
  width = 1600, gray = FALSE, parallel = TRUE, ...)

## S3 method for class 'goproVideo'
disc_extract(data, start, stop, dir, verbose = FALSE,
  fps = 1, width = 1600, gray = FALSE, parallel = TRUE, ...)

Arguments

data	data (or metadata) for this sensor, read by disc_read.
start, stop	start and stop times, as POSIXct objects.
dir	destination directory, where the extracted data should be stored (without trailing slash, to be able to also name a file based on it).
verbose	output additional information (for debugging purposes) when extracting data.
...	passed to the various methods.
width	width to resize the images to, in pixels. When NULL, images are not resized.
gray	logical; whether to convert the images to grayscale.
parallel	logical, whether to process images and/or videos in parallel (should be left to TRUE by default for speed).
fps	number of frames to extract per second. 0.5 gives one frame every two seconds, 1/3 gives one frame every 3 seconds, 2 gives one frame every 0.5 seconds.

Details

All methods can rely on data having a dateTime column, of class POSIXct. Based on this column, they should extract the data between start and stop and store it in the destination directory.

See Also

disc_read and disc_extract_deployments

jiho/discr documentation built on May 19, 2019, 9:30 a.m.