NDArray API

The multidimensional data array class. This class consists of a set of useful parameters and methods that allow not only to define an array correctly, but also to handle it in a simple way, being able to extract multidimensional slices from it.

Methods

__getitem__	Get a (multidimensional) slice as specified in key.
__setitem__	Set a slice.
copy	Create a copy of an array with same parameters.
iterchunks_info	Iterate over self chunks, providing info on index and special values.
slice	Get a (multidimensional) slice as a new NDArray.
squeeze	Remove the 1's in array's shape.
resize	Change the shape of the array by growing or shrinking one or more dimensions.
tobytes	Returns a buffer with the data contents.
to_cframe	Get a bytes object containing the serialized NDArray instance.

Attributes

ndim	The number of dimensions of this container.
shape	The data shape of this container.
ext_shape	The padded data shape.
chunks	The data chunk shape of this container.
ext_chunks	The padded chunk shape which defines the chunksize in the associated schunk.
blocks	The block shape of this container.
blocksize	The block size (in bytes) for this container.
chunksize	The data chunk size (in bytes) for this container.
dtype	Data-type of the array’s elements.
info	Print information about this array.
schunk	The SChunk reference of the NDArray.
size	The size (in bytes) for this container.

Constructors

asarray	Convert the array to an NDArray.
copy	This is equivalent to NDArray.copy()
empty	Create an empty array.
frombuffer	Create an array out of a buffer.
full	Create an array, with fill_value being used as the default value for uninitialized portions of the array.
nans	Create an array with NaNs values.
ndarray_from_cframe	Create a NDArray instance out of a contiguous frame buffer.
uninit	Create an array with uninitialized values.
zeros	Create an array, with zero being used as the default value for uninitialized portions of the array.

Functions

sin	Trigonometric sine, element-wise.
cos	Trigonometric cosine, element-wise.
tan	Trigonometric tangent, element-wise.
sinh	Hyperbolic sine, element-wise.
cosh	Hyperbolic cosine, element-wise.
tanh	Hyperbolic tangent, element-wise.
arcsin	Inverse sine, element-wise.
arccos	Trigonometric inverse cosine, element-wise.
arctan	Trigonometric inverse tangent, element-wise.
arctan2	Element-wise arc tangent of ndarr1 / ndarr2 choosing the quadrant correctly.
arcsinh	Inverse hyperbolic sine, element-wise.
arccosh	Inverse hyperbolic cosine, element-wise.
arctanh	Inverse hyperbolic tangent, element-wise.
exp	Calculate the exponential of all elements in the input array.
expm1	Calculate exp(ndarr) - 1 for all elements in the array.
log	Natural logarithm, element-wise.
log10	Return the base 10 logarithm of the input array, element-wise.
log1p	Return the natural logarithm of one plus the input array, element-wise.
sqrt	Return the non-negative square-root of an array, element-wise.
conj	Return the complex conjugate, element-wise.
real	Return the real part of the complex array, element-wise.
imag	Return the imaginary part of the complex array, element-wise.
contains	Check if the array contains a string value.
abs	Calculate the absolute value element-wise.