'Dap'

[loren mccarter]

My apologies if this is not an appropriate post but I thought users on
this list would be interested in the following GNU Software that I think 
would work well with ESS. 

It is called 'Dap' and is available at:

    http://www.gnu.org/software/dap/dap.html

Here's an excerpt from the intro: 

------------------------------------------------------------------------
"Dap is a small statistics and graphics package based on C. It provides
core methods of data management, analysis, and graphics that are commonly
used in statistical consulting practice (univariate statistics,
correlations and regression, ANOVA, categorical data analysis, logistic
regression, and nonparametric analyses). Anyone familiar with the basic
syntax of C programs can learn to use Dap quickly and easily from the
manual and the examples contained in it; advanced features of C are not
necessary, although they are available. (The manual contains a brief
introduction to the C syntax needed for Dap.) Because Dap processes files
one line at a time, rather than reading entire files into memory, it can
be, and has been, used on data sets that have very many lines and/or very
many variables." 

"I wrote Dap to use in my statistical consulting practice
because the utterly famous, industry standard statistics system (you know
the one I mean) is not available on GNU/Linux and costs a bundle every
year under a lease arrangement. I was generally happy with that system,
except for the graphics, which are all but impossible to use, but there
were a number of clumsy constructs left over from its ancient
origins. Thus, I decided to mimic the core of the functionality of that
system in the context of the C language, which allows much more
programming flexibility."
------------------------------------------------------------------------

I've tried it and think it will make a nice compliment to R
(www.r-project.org) because it could be useful for manipulating massive
data sets without the additional work required to load the tables
into MySQL. I think an ESS-Dap-mode and some other things would be useful,  
but it is an excellent start IMO. 

If you find this useful or have heard of similar software, please let me
know. Thanks.


Loren



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