readTemplates: Read Acoustic Templates from a Local Disk

In monitoR: Acoustic Template Detection in R

Description

Read single templates stored on a local disk, or read in entire directories of templates.

Usage

readBinTemplates(files = NULL, dir = ".", ext = "bt", parallel = FALSE)
readCorTemplates(files = NULL, dir = ".", ext = "ct", parallel = FALSE)

Arguments

files	Optional named vector of file names. See details.
dir	Name of directory to read files from. Default is working directory.
ext	Extension of files that should be read in. Files in dir without this extension will be skipped. Not necessary if files is provided.
parallel	Logical. TRUE uses mclapply, otherwise lapply is used.

Details

These functions can be used in three different ways, in both cases combing all templates read in into a single template list. By specifying a character vector of file names for files, they will read in the named files, and assign names based on file names. If files is a named vector, the vector names will be used in the resulting template list. Finally, if files is not provided, the functions will read in all saved templates with the extension ext.

Value

An object of class TemplateList containing either binary point templates or spectrogram cross-correlation templates.

Author(s)

Sasha D. Hafner

See Also

writeBinTemplates, writeCorTemplates

Examples

# Load data
data(btnw)
data(oven)

# Write Wave objects to file (temporary directory used here)
btnw.fp <- file.path(tempdir(), "btnw.wav")
oven.fp <- file.path(tempdir(), "oven.wav")
writeWave(btnw, btnw.fp)
writeWave(oven, oven.fp)

# Correlation example
# Create one correlation templates
wct1 <- makeCorTemplate(btnw.fp, name = "w1")
wct2 <- makeCorTemplate(btnw.fp, t.lim = c(1.5, 2.1), frq.lim = c(4.2, 5.6), name = "w2")
oct1 <- makeCorTemplate(oven.fp, t.lim = c(1, 4), frq.lim = c(1, 11), name = "o1")
oct2 <- makeCorTemplate(oven.fp, t.lim = c(1, 4), frq.lim = c(1, 11), dens = 0.1, name = "o2")

# Combine all of them
ctemps <- combineCorTemplates(wct1, wct2, oct1, oct2)

## Not run: 
# Write ctemps to a directory "templates"
writeCorTemplates(ctemps, dir = "templates")

# Read in all correlation templates in a directory "templates"
ctemps <- readCorTemplates(dir = "templates")

# Read in two specific files
ctemps <- readCorTemplates(files = c("o1.ct", "o2.ct"), dir = "templates")

# Read in two specific files, and give them names
ctemps <- readCorTemplates(files = c(oven1 = "o1.ct", oven2 = "o2.ct"), dir = "templates")

## End(Not run)

# Clean up (only because these files were created in these examples)
file.remove(btnw.fp)
file.remove(oven.fp)

monitoR documentation built on May 1, 2019, 6:28 p.m.