[Haskell-cafe] Mathematics and Statistics libraries

[Aleksey Khudyakov]

On 25.03.2012 14:52, Tom Doris wrote:
> Hi Heinrich,
>
> If we compare the GHCi experience with R or IPython, leaving aside any
> GUIs, the help system they have at the repl level is just a lot more
> intuitive and easy to use, and you get access to the full manual
> entries. For example, compare what you see if you type :info sort into
> GHCi versus ?sort in R. R gives you a view of the full docs for the
> function, whereas in GHCi you just get the type signature.
>
Ingrating haddock documentation into GHCi would be really helpful but 
it's GSoC project on its own.

For me most important difference between R's repl and GHCi is that 
:reload wipes all local binding. Effectively it forces to write 
everything in file and to avoid doing anything which couldn't be fitted 
into one-liner. It may not be bad but it's definitely different style

And of course data visualization. Only library I know of is Chart[1] but 
I don't like API much.

I think talking about data frames is a bit pointless unless we specify 
what is data frame. Basically there are two representations of tabular 
data structure: array of tuples or tuple of arrays. If you want first go 
for Data.Vector.Vector YourData. If you want second you'll probably end 
up with some HList-like data structure to hold arrays.



[1] http://hackage.haskell.org/package/Chart