Reshape change log

Reshape 0.7.4

Minor update to ensure compatibility with R 2.5

Reshape 0.7.1

The biggest change is that reshape now outputs regular data.frames, which should make it easier to use them for further analysis and transformation.
Added a fill argument to cast which specifies what value should be used for structural missings
fun.aggregate will always be applied if specified, even if no aggregation occurs
margins now work for non-aggregated data
cast now accepts a list of functions for fun.aggregate
very long formulas will now work in cast
fixed bug in rbind.fill
should be able to melt any cast form

Reshape 0.7

This new version of reshape substantially expands the type of output you can cast into. You can now make nested lists, cast(m, a ~ b | c) or cast(m, a ~ b | c + d), and multidimensional arrays, cast(m, a ~ b ~ c) (or any combination of the two). See the examples in ?cast.

What else is new?:

iapply, an idempotent apply function that returns results with the same dimensionality as the input (very useful in conjunction with sweep and multidimensional arrays)
rescaler, a function to rescale data.frames variable by variable using a range of different scaling methods
combine_factor and reorder_factor to make it easier to combine and reorder factor levels
bug fixes!

Reshape 0.6.2

a new function, stamp, which is kind of a cross between by and cast, and allows for aggregation functions that take an entire data frame. See ?stamp for examples
deals better with row and column names when subsetting the result
a namespace to make it easier to deal with potential name clashes with other packages
better performance

Reshape 0.5

The big news in this version of reshape is that I've renamed all the functions so they no longer conflict with any built in functions - deshape is now melt (think liquid data) and reshape is now cast (think solidifying data into the form you want).

What's new (apart from the big renaming)?

recast melts and casts your data in one step
column naming bugs fixed
easily display all margins with the option margins=T in cast
melt data frames with all measured or all id variables