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NumPy | negative method

schedule Aug 11, 2023

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Python●NumPy

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Parameters Return value Examples Basic usage

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Numpy's negative(~) method multiplies every value in the input array by -1. Note that a new Numpy array will be returned.

Parameters

1. a | array-like

The first input array.

2. out | Numpy array | optional

Instead of creating a new array, you can place the computed mean into the array specified by out.

3. where | array of boolean | optional

Values that are flagged as False will be ignored, that is, their original value will be uninitialized. If you specified the out parameter, the behaviour is slightly different - the original value will be kept intact.

Return value

A scalar is returned if a is a scalar, otherwise a Numpy array is returned.

Examples

Basic usage


        
        
            
                
                
                    a = np.array([1,-2,3])
b = np.negative(a)
b
                
            
            array([-1,  2, -3])

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Published by Isshin Inada

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