Date: Sun, 25 Mar 2012 17:54:11 +0400 > From: Aleksey Khudyakov <[email protected]> > Subject: Re: [Haskell-cafe] Mathematics and Statistics libraries > To: [email protected] > Message-ID: <[email protected]> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > On 25.03.2012 14:52, Tom Doris wrote: > > Hi Heinrich, > > And of course data visualization. Only library I know of is Chart[1] but > I don't like API much. >
There is the plot[1] library which provides for updateable plots from GHCi REPL and has a gnuplot-like interface. I wrote it for this very reason, a mathematics/statistics development environment. It uses Data.Vector.Storable, which provides for compatability with both statistics and hmatrix packages (as well as hstatistics). > > 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. > > Matrices from hmatrix are easily converted to rows or columns of Data.Vector.Storable and can be sliced and otherwise manipulated. [1] http://hackage.haskell.org/package/plot<%20%20[1]%20http://hackage.haskell.org/package/plot> Vivian
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