Apply a function on track expression in intervals

Apply a function on track expression in intervals

glply(f, expr, intervals = NULL, iterator = NULL, colnames = NULL,
  nchunks = 1, parallel = FALSE, verbose = FALSE,
  gfunc = misha::gextract)

gdply(...)

Arguments

f

function to apply. First argument would be the result of gfunc called with the track expression, intervals, iterator and column names, i.e.: we would run for each chunk f(gfunc(expr, intervals, iterator=iterator, colnames=colnames)) For additional parameters use anonymous functions, e.g. function(x) f1(x, param1=1, param2=2)

expr

track expression for gfunc

intervals

intervals for which track expressions are calculated

iterator

track expression iterator. If 'NULL' iterator is determined implicitly based on track expressions

colnames

sets the columns names in the returned value. If 'NULL' names are set to track expression.

nchunks

number of chunks to divide the intervals to.

parallel

run each chunk in parallel

verbose

verbose

gfunc

function to apply on track expression. can be any function that gets track expression, intervals, iterator and colnames, e.g. gextract, gextract.left_join, gscreen etc.

Value

for llply - list with the returned values from the functions. for ldply - data.frame with the returned values from the functions rbinded.