Source code for xorbits._mars.tensor.arithmetic.imag
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#
# Licensed under the Apache License, Version 2.0 (the "License");
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#
# http://www.apache.org/licenses/LICENSE-2.0
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import numpy as np
from ... import opcodes as OperandDef
from ..utils import infer_dtype
from .core import TensorUnaryOp
from .utils import arithmetic_operand
@arithmetic_operand(sparse_mode="unary")
class TensorImag(TensorUnaryOp):
_op_type_ = OperandDef.IMAG
_func_name = "imag"
[docs]@infer_dtype(np.imag)
def imag(val, **kwargs):
"""
Return the imaginary part of the complex argument.
Parameters
----------
val : array_like
Input tensor.
Returns
-------
out : Tensor or scalar
The imaginary component of the complex argument. If `val` is real,
the type of `val` is used for the output. If `val` has complex
elements, the returned type is float.
See Also
--------
real, angle, real_if_close
Examples
--------
>>> import mars.tensor as mt
>>> a = mt.array([1+2j, 3+4j, 5+6j])
>>> a.imag.execute()
array([ 2., 4., 6.])
>>> a.imag = mt.array([8, 10, 12])
>>> a.execute()
array([ 1. +8.j, 3.+10.j, 5.+12.j])
>>> mt.imag(1 + 1j).execute()
1.0
"""
op = TensorImag(**kwargs)
return op(val)