apop_conversions.c File Reference

Functions

• double * apop_vector_to_array (const gsl_vector *in)
• gsl_vector * apop_array_to_vector (double *in, int size)
• gsl_matrix * apop_vector_to_matrix (const gsl_vector *in, char row_col)
• gsl_matrix * apop_array_to_matrix (const double **in, const int rows, const int cols)
• apop_data * apop_array_to_data (const double **in, const int rows, const int cols)
• gsl_matrix * apop_line_to_matrix (double *line, int rows, int cols)
• apop_data * apop_line_to_data (double *in, int vsize, int rows, int cols)
• apop_data * apop_db_to_crosstab (char *tabname, char *r1, char *r2, char *datacol)
• void apop_crosstab_to_db (apop_data *in, char *tabname, char *row_col_name, char *col_col_name, char *data_col_name)
• gsl_vector * apop_vector_copy (const gsl_vector *in)
• gsl_matrix * apop_matrix_copy (const gsl_matrix *in)
• apop_data * apop_text_to_data (char *text_file, int has_row_names, int has_col_names, int *field_ends)
• int apop_text_to_db (char *text_file, char *tabname, int has_row_names, int has_col_names, char **field_names, int *field_ends)
• void apop_data_unpack (const gsl_vector *in, apop_data *d)
• gsl_vector * apop_data_pack (const apop_data *in, gsl_vector *out)
• apop_data * apop_data_fill_base (apop_data *in, double ap[])
• gsl_vector * apop_vector_fill_base (gsl_vector *in, double ap[])
• gsl_matrix * apop_matrix_fill_base (gsl_matrix *in, double ap[])

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Detailed Description

The various functions to convert from one format to another.

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Function Documentation

void apop_crosstab_to_db	(	apop_data *	in,
		char *	tabname,
		char *	row_col_name,
		char *	col_col_name,
		char *	data_col_name
	)

See apop_db_to_crosstab for the storyline; this is the complement.

apop_data* apop_db_to_crosstab	(	char *	tabname,
		char *	r1,
		char *	r2,
		char *	datacol
	)

Give the name of a table in the database, and names of three of its columns: the x-dimension, the y-dimension, and the data. the output is a 2D matrix with rows indexed by r1 and cols by r2.

Parameters:

	tabname	The database table I'm querying. Anything that will work inside a from clause is OK, such as a subquery in parens.
	r1	The column of the data set that will indicate the rows of the output crosstab
	r2	The column of the data set that will indicate the columns of the output crosstab
	datacol	The column of the data set holding the data for the cells of the crosstab