ffStack

ffStack,ffdf,data.frame-method

ffStack,ffdf,ffdf-method

ffStack,ffdf,list-method

an <code><a rd-options="ff" href="/link/ffdf?package=Stack&version=2.0-1&to=ff" data-mini-rdoc="ff::ffdf">ffdf</a></code>

ffdf

a <code><a rd-options="base" href="/link/data.frame?package=Stack&version=2.0-1&to=base" data-mini-rdoc="base::data.frame">data.frame</a></code>

print extra information about columns as
  they stack

verbose


For fast operations on large data frames, we want to turn
them into ffdf. This is a special case of
<code><a rd-options="" href="/link/Stack?package=Stack&version=2.0-1" data-mini-rdoc="Stack::Stack">Stack</a></code> where the first arugment is already an
ffdf, and we are Stacking another data.frame into it,
expanding factor levels as needed, and possibly enlarging
vmodes of existing ff columns.


Stacks rectangular datasets on top of each other, possibly
performing several type coercions along the way. For large datasets,
depends on the ff package. Provides an aggressive version of
ffbase::compact for data that may appear be real-typed but is in fact
int/short/byte. For many purposes plyr::rbind.fill may be more appropriate,
but for some kinds of survey data, the rules here work better.

ffStack: Merge a data.frame into an ffdf data.frame-alike

Description

Usage

Arguments

Value