#define CAT_H 1
#include <gsl/gsl_matrix.h>
+#include <stdbool.h>
/*
- This structure contains the binary encoding of a
+ This structure contains the observed values of a
categorical variable.
*/
-struct recoded_categorical
+struct cat_vals
{
- const struct variable *v; /* Original variable. */
- union value **vals;
- gsl_matrix *m; /* Vector-encoded values of the original
- variable. The ith row of the matrix corresponds
- to the ith value of a categorical variable.
- */
+ union value *vals;
size_t n_categories;
- size_t first_column; /* First column of the gsl_matrix which
- contains recoded values of the categorical
- variable.
- */
- size_t last_column; /* Last column containing the recoded
- categories. The practice of keeping only the
- first and last columns of the matrix implies
- those columns corresponding to v must be
- contiguous.
- */
- size_t n_allocated_categories; /* This is used only during initialization
- to keep track of the number of values
- stored.
+ size_t n_allocated_categories; /* This is used only during
+ initialization to keep
+ track of the number of
+ values stored.
*/
};
struct design_matrix_var
{
- int first_column; /* First column for this variable in the
- design_matix. If this variable is categorical,
- its values are stored in multiple, contiguous
- columns, as dictated by its vector encoding
- in the variable's struct recoded_categorical.
+ int first_column; /* First column for this variable in
+ the design_matix. If this variable
+ is categorical, its values are
+ stored in multiple, contiguous
+ columns, as dictated by its vector
+ encoding in the variable's struct
+ recoded_categorical.
*/
int last_column;
- struct variable *v;
+ const struct variable *v;
};
struct design_matrix
{
gsl_matrix *m;
- struct design_matrix_var *vars; /* Element i is the the variable whose
- values are stored in column i of m. If that
- variable is categorical with more than two
- categories, its values are stored in multiple,
- contiguous columns. In this case, element i is
- the first column for that variable. The
- variable's values are then stored in the
- columns first_column through
- last_column. first_column and last_column for
- a categorical variable are stored in the
- variable's recoded_categorical structure.
+ struct design_matrix_var *vars; /* Element i corresponds to
+ the variable whose values
+ are stored in at least one
+ column of m. If that
+ variable is categorical
+ with more than two
+ categories, its values are
+ stored in multiple,
+ contiguous columns. The
+ variable's values are then
+ stored in the columns
+ first_column through
+ last_column of the
+ design_matrix_var
+ structure.
*/
size_t n_vars;
};
-const union value *cr_vector_to_value (const gsl_vector *,
- struct recoded_categorical *);
+union value *cr_vector_to_value (const gsl_vector *, struct variable *);
+
+void cat_stored_values_create (struct variable *);
-void cr_value_update (struct recoded_categorical *, const union value *);
+void cat_value_update (struct variable *, const union value *);
-int cr_free_recoded_array (struct recoded_categorical_array *);
+int cat_free_recoded_array (struct recoded_categorical_array *);
struct recoded_categorical_array *cr_recoded_cat_ar_create (int,
struct variable
*[]);
-struct recoded_categorical *cr_recoded_categorical_create (const struct
- variable *);
+void cat_recoded_categorical_create (struct variable *);
-void cr_create_value_matrices (struct recoded_categorical_array *);
+void cat_create_value_matrix (struct variable *);
-struct recoded_categorical *cr_var_to_recoded_categorical (const struct
- variable *,
- struct
- recoded_categorical_array
- *);
+struct recoded_categorical *cat_var_to_recoded_categorical (const struct
+ variable *,
+ struct
+ recoded_categorical_array
+ *);
struct design_matrix *design_matrix_create (int, const struct variable *[],
- struct
- recoded_categorical_array *,
const size_t);
void design_matrix_destroy (struct design_matrix *);
void design_matrix_set_categorical (struct design_matrix *, size_t,
const struct variable *,
- const union value *,
- struct recoded_categorical *);
+ const union value *);
void design_matrix_set_numeric (struct design_matrix *, size_t,
const struct variable *, const union value *);
size_t design_matrix_var_to_column (const struct design_matrix *,
const struct variable *);
-const struct variable *design_matrix_col_to_var (const struct design_matrix *,
- size_t);
+struct variable *design_matrix_col_to_var (const struct design_matrix *,
+ size_t);
void
design_matrix_set (struct design_matrix *, size_t,
const struct variable *, const union value *,
struct recoded_categorical *);
-void cr_recoded_categorical_destroy (struct recoded_categorical *);
+void cat_stored_values_destroy (struct variable *);
#endif
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