3 ;;; Time-stamp: <2012-10-09 03:17:34 tony>
4 ;;; Creation: <2009-03-12 17:14:56 tony>
5 ;;; File: dataframe-array.lisp
6 ;;; Author: AJ Rossini <blindglobe@gmail.com>
7 ;;; Copyright: (c)2009--, AJ Rossini. BSD, LLGPL, or GPLv2, depending
9 ;;; Purpose: real dataframe class using lisp-arrays as storage.
11 ;;; What is this talk of 'release'? Klingons do not make software
12 ;;; 'releases'. Our software 'escapes', leaving a bloody trail of
13 ;;; designers and quality assurance people in its wake.
15 ;;; This organization and structure is new to the 21st Century
16 ;;; version.. Think, "21st Century Schizoid Man".
18 (in-package :cls-dataframe
)
22 (defclass dataframe-array
(dataframe-like)
27 :documentation
"Data storage: typed as array.")
28 (store-class :initform
'array
30 :documentation
"Storage class is ARRAY."))
31 (:documentation
"example implementation of dataframe-like using storage
32 based on lisp arrays. An obvious alternative could be a
33 dataframe-matrix-like which uses the lisp-matrix classes."))
35 (defmethod make-dataframe2 ((data dataframe-array
)
36 &key vartypes varlabels caselabels doc
)
37 (check-dataframe-params data vartypes varlabels caselabels doc
)
38 (let ((newcaselabels (if caselabels
40 (make-labels "C" (ncases data
))))
41 (newvarlabels (if varlabels
43 (make-labels "V" (nvars data
))))
44 ;; also should determine most restrictive possible (compsci
45 ;; and/or statistical) variable typing (integer, double,
46 ;; string, symbol, *). FIXME: until we get the mixed typing system in place, we will just leave null
47 (newvartypes (if vartypes
49 (make-labels "*" (nvars data
)))))
50 (make-instance 'dataframe-array
52 :nrows
(length newcaselabels
)
53 :ncols
(length newvarlabels
)
54 :case-labels newcaselabels
55 :var-labels newvarlabels
56 :var-types newvartypes
)))
59 (defmethod nrows ((df dataframe-array
))
60 "specializes on inheritance from matrix-like in lisp-matrix."
61 (array-dimension (dataset df
) 0))
63 (defmethod ncols ((df dataframe-array
))
64 "specializes on inheritance from matrix-like in lisp-matrix."
65 (array-dimension (dataset df
) 1))
67 (defmethod xref ((df dataframe-array
) &rest subscripts
)
68 "Returns a scalar in array, in the same vein as aref, mref, vref, etc.
69 idx1/2 is row/col or case/var."
70 (assert (>= 2 (length subscripts
)))
72 (assert (typep (elt subscripts
0) integer
))
73 (assert (typep (elt subscripts
1) integer
))
75 (aref (dataset df
) (elt subscripts
0) (elt subscripts
1)))
77 (defmethod (setf xref
) (value (df dataframe-array
) &rest subscripts
)
78 "set value for df-ar."
79 ;; (check-type val (elt (var-type df) index2))
80 (setf (aref (dataset df
) (elt subscripts
0) (elt subscripts
1)) value
))
82 (defparameter *default-dataframe-class
* 'dataframe-array
)
84 (defmethod dfselect ((df dataframe-array
)
85 &optional cases vars indices
)
86 "Extract the OR of cases, vars, or have a list of indices to extract"
87 (if indices
(error "Indicies not used yet"))
88 (let ((newdf (make-instance *default-dataframe-class
*
89 :storage
(make-array (list (length cases
) (length vars
)))
93 :case-labels
(select-list caselist
(case-labels df
))
94 :var-labels
(select-list varlist
(var-labels df
))
95 :var-types
(select-list varlist
(vartypes df
))
98 (dotimes (i (length cases
))
99 (dotimes (j (length vars
))
100 (setf (xref newdf i j
)
102 (position (elt cases i
) (case-labels df
))
103 (position (elt vars j
) (var-labels df
))))))))