| countTextLines {rbamtools} | R Documentation |
The countTextLines function takes a filename vector and returns the number of lines contained in each file.
countTextLines(filenames)
filenames |
Character. Vector of file-names to be opened. |
Fastq files usually (but not guaranteed) contain four lines of text for each read. In many cases, this function can be used to count the number of reads in a fastq file.
filename <- system.file("extdata", "test.fastq", package="rbamtools")
countTextLines(filename)