Programming Articles - Page 779 of 3363

Reduce a multi-dimensional array and multiply elements along specific axis in Numpy

AmitDiwan
Updated on 07-Feb-2022 11:29:45

744 Views

To reduce a multi-dimensional array, use the np.ufunc.reduce() method in Python Numpy. Here, we have used multiply.reduce() to reduce it to the multiplication of elements. The axis is set using the "axis" parameter. Axis or axes along which a reduction is performed.The numpy.ufunc has functions that operate element by element on whole arrays. The ufuncs are written in C (for speed) and linked into Python with NumPy’s ufunc facility. A universal function (or ufunc for short) is a function that operates on ndarrays in an element-by-element fashion, supporting array broadcasting, type casting, and several other standard features. That is, a ... Read More

Test array values for finiteness and store the result in a new location in Numpy

AmitDiwan
Updated on 07-Feb-2022 11:28:29

160 Views

To test array values for finiteness, use the numpy.isfinite() method in Python Numpy. The new location where we will store the result is a new array. Returns True where x is not positive infinity, negative infinity, or NaN; false otherwise. This is a scalar if x is a scalar.This condition is broadcast over the input. At locations where the condition is True, the out array will be set to the ufunc result. Elsewhere, the out array will retain its original value. Note that if an uninitialized out array is created via the default out=None, locations within it where the condition ... Read More

Reduce a multi-dimensional array and add elements in Numpy

AmitDiwan
Updated on 07-Feb-2022 11:27:21

542 Views

To reduce a multi-dimensional array, use the np.ufunc.reduce() method in Python Numpy. Here, we have used add.reduce() to reduce it to the addition of elements.The numpy.ufunc has functions that operate element by element on whole arrays. The ufuncs are written in C (for speed) and linked into Python with NumPy’s ufunc facility. A universal function (or ufunc for short) is a function that operates on ndarrays in an element-by-element fashion, supporting array broadcasting, type casting, and several other standard features. That is, a ufunc is a “vectorized” wrapper for a function that takes a fixed number of specific inputs and ... Read More

Test array values for finiteness in Numpy

AmitDiwan
Updated on 07-Feb-2022 11:26:18

256 Views

To test array values for finiteness, use the numpy.isfinite() method in Python Numpy. Returns True where x is not positive infinity, negative infinity, or NaN; false otherwise. This is a scalar if x is a scalar.This condition is broadcast over the input. At locations where the condition is True, the out array will be set to the ufunc result. Elsewhere, the out array will retain its original value. Note that if an uninitialized out array is created via the default out=None, locations within it where the condition is False will remain uninitialized.StepsAt first, import the required library −import numpy as ... Read More

Compare two Numpy arrays and return the element-wise minimum ignoring NaNs

AmitDiwan
Updated on 07-Feb-2022 11:24:00

488 Views

To compare two arrays and return the element-wise minimum ignoring NaNs, use the numpy.fmin() method in Python Numpy. Return value is either True or False.Compare two arrays and returns a new array containing the element-wise maxima. If one of the elements being compared is a NaN, then the non-nan element is returned. If both elements are NaNs then the first is returned. The latter distinction is important for complex NaNs, which are defined as at least one of the real or imaginary parts being a NaN. The net effect is that NaNs are ignored when possible.StepsAt first, import the required ... Read More

Compare two Numpy arrays and return the element-wise maximum with fmax()

AmitDiwan
Updated on 07-Feb-2022 11:21:50

989 Views

To compare two arrays and return the element-wise maximum, use the numpy.fmax() method in Python Numpy. Return value is either True or False.Compare two arrays and returns a new array containing the element-wise maxima. If one of the elements being compared is a NaN, then the non-nan element is returned. If both elements are NaNs then the first is returned. The latter distinction is important for complex NaNs, which are defined as at least one of the real or imaginary parts being a NaN. The net effect is that NaNs are ignored when possible.StepsAt first, import the required library −import ... Read More

Calculate the absolute value element-wise in Numpy

AmitDiwan
Updated on 07-Feb-2022 11:18:28

2K+ Views

To calculate the absolute value, we can use two methods, fabs() and absolute(). To return the absolute value element-wise, use the numpy.fabs() method in Python Numpy. This displays the output in float.To return the absolute value element-wise, you can also use the numpy.absolute() method in Python Numpy. The out is a location into which the result is stored. If provided, it must have a shape that the inputs broadcast to. If not provided or None, a freshly-allocated array is returned. A tuple (possible only as a keyword argument) must have length equal to the number of outputs.The condition is broadcast ... Read More

Reduce a multi-dimensional array and multiply elements in Numpy

AmitDiwan
Updated on 07-Feb-2022 11:24:58

578 Views

To reduce a multi-dimensional array, use the np.ufunc.reduce() method in Python Numpy. Here, we have used multiply.reduce() to reduce it to the multiplication of elements.A universal function (or ufunc for short) is a function that operates on ndarrays in an element-byelement fashion, supporting array broadcasting, type casting, and several other standard features. That is, a ufunc is a "vectorized" wrapper for a function that takes a fixed number of specific inputs and produces a fixed number of specific outputs. The numpy.ufunc has functions that operate element by element on whole arrays. The ufuncs are written in C (for speed) and ... Read More

Return element-wise quotient and remainder simultaneously in Python Numpy

AmitDiwan
Updated on 07-Feb-2022 11:16:01

332 Views

To return the element-wise quotient and remainder simultaneously, use the numpy.fmod() method in Python Numpy. Here, the 1st parameter is the Dividend array. The 2nd parameter is the Divisor array.This is the NumPy implementation of the C library function fmod, the remainder has the same sign as the dividend x1. It is equivalent to the Matlab(TM) rem function and should not be confused with the Python modulus operator x1 % x2.The condition is broadcast over the input. At locations where the condition is True, the out array will be set to the ufunc result. Elsewhere, the out array will retain ... Read More

Return the cube-root of an array elementwise in Numpy

AmitDiwan
Updated on 07-Feb-2022 11:22:30

1K+ Views

To return the cube-root of an array, element-wise, use the numpy.cbrt() method in Python Numpy. An array of the same shape as x, containing the cube cube-root of each element in x. If out was provided, y is a reference to it. This is a scalar if x is a scalar.The condition is broadcast over the input. At locations where the condition is True, the out array will be set to the ufunc result. Elsewhere, the out array will retain its original value. Note that if an uninitialized out array is created via the default out=None, locations within it where ... Read More

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