def get_data(f, ind_vars):
"""
Reads f and returns a list of the independent variables.
"""
lines = reader(f)
variables = lines.next()
var_dict = make_variable_dictionary(variables)
# Collect all of the data, but only the variables of interest.
data = []
for line in lines:
datum = get_datum(line, var_dict, ind_vars, None)
data.append(datum)
return data
def construct(f, ind_vars, target_var, max_depth):
"""
Given a csv data file 'f', a list of independent variables, and the target
variable, a tree is built and returned.
"""
lines = reader(f)
variables = lines.next()
var_dict = make_variable_dictionary(variables)
# Collect all of the data, but only the variables of interest.
data = []
for line in lines:
datum = get_datum(line, var_dict, ind_vars, target_var)
data.append(datum)
# Simplify variable dictionary:
var_dict = simplify_var_dict(ind_vars, target_var)
return make_tree(data, ind_vars, target_var, var_dict, max_depth, len(data))
