transform2

_data

<p>Further arguments of the form <code>tag=value</code>.</p>

&#8230;

<p>In <code>transform</code> the right hand sides of the arguments may not refer
to the left hand sides.  <code>transform2</code> works like <code>transform</code>
with the exception that a right hand side may refer to any of the variables
on the left hand side of another argument.  The argument defining the 
left hand side may come before or after the reference.</p>

misc

The gsubfn function is like gsub but can take a replacement
function or certain other objects instead of the replacement string.
Matches and back references are input to the replacement function and
replaced by the function output.   gsubfn can be used to split strings
based on content rather than delimiters and for quasi-perl-style string
interpolation. The package also has facilities for translating formulas
to functions and allowing such formulas in function calls instead of
functions.  This can be used with R functions such as apply, sapply,
lapply, optim, integrate, xyplot, Filter and any other function that
expects another function as an input argument or functions like cat
or sql calls that may involve strings where substitution is desirable.
There is also a facility for returning multiple objects from functions
and a version of transform that allows the RHS to refer to LHS used in
the same transform.

transform2: Like transform but allows right hand sides to refer to left hand sides.

Description

Usage

Arguments

Value

See Also

Examples