Count the occurance of '\n', much faster than <code>readLine</code> and
<code>read.table</code>. Although slower than the unix command "wc -l",
it upholds platform independency.

Provide function that reads binary genotype produced by 'PLINK' <https://www.cog-genomics.org/plink/1.9/input#bed> into a R matrix, or scan the genotype one variant at a time like apply(), it also provides functions that reads and writes genotype relatedness/kinship matrices created by 'PLINK' <https://www.cog-genomics.org/plink/1.9/distance#make_rel> or 'GCTA' <https://cnsgenomics.com/software/gcta/#MakingaGRM>. Currently it does not support writing back into 'PLINK' binary, it is best used for bringing data produced by 'PLINK' and 'GCTA' into R environment.

Xiaoran Tong

plinkFile

'PLINK' (and 'GCTA') File Helpers

lc function

<dl><dt>f</dt>
<dd>the file name, or a connection.</dd></dl>

Arguments

Line Count — lc

<dl>

<dt>f</dt>
<dd>the file name, or a connection.</dd>

</dl>

lc: Line Count

Description

Usage

Arguments