numpy2vec#

Convert a Numpy Array to a cppad_py Vector#

Syntax#

vec =  cppad_py.utility.numpy2vec (
      array , dtype , shape , context , name
)

array#

This is either a vector (only one index) or a matrix (has two indices) that we are converting to a vector. If this array does not match the conditions below, an exception is raised with an appropriate error message.

dtype#

This is the expected data type for the elements of the array. It must be one of the following: bool , int , float or cppad_py.a_double .

shape#

This either a int or a tuple of int with length one or two. If it is an int , array is expected to be a vector. If it is a tuple with length one, array is expected to be a vector. Otherwise a matrix is expected.

context#

This is the context that array appears in (often to syntax for some other operation). It is a str that is used for error reporting.

name#

This is the name used for array in context . It is a str that is used for error reporting.

vec#

This is the values of array as a vector is row major order. It has type vec_double if dtype is float , and vec_a_double if dtype is a_double .