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NumPy | ediff1d method

schedule Aug 10, 2023

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Parameters Return value Examples Basic usage Prepending and appending values

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Numpy's ediff1d(~) method computes the difference between each value and its adjacent value in the input array.

Parameters

1. a | array-like

The input array. Multi-dimensional arrays will be flattened to a 1D array.

2. to_end | array-like | optional

The values to append to the returned differences.

3. to_begin | array-like | optional

The values to prepend to the returned differences.

Return value

A Numpy array that contains the difference between each value and its adjacent value in the input array.

Examples

Basic usage


        
        
            
                
                
                    a = np.array([1, 3, 8, 15, 30])
np.ediffd(a)
                
            
            array([ 2,  5,  7, 15])

Prepending and appending values


        
        
            
                
                
                    a = np.array([1, 3, 8, 15, 30])
np.ediffd(a, to_begin=-5, to_end=9)
                
            
            array([-5,  2,  5,  7, 15,  9])

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Published by Isshin Inada

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