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NumPy | hsplit method

schedule Aug 10, 2023

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Parameters Return value Examples

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NumPy's hsplit(~) method horizontally splits the input array. A nice way of thinking about this for 2D arrays is is to imagine chopping the array vertically.

NOTE

The method hsplit(~) is just shorthand for split(~, axis=1). For more flexibility, you may want to use the split(~) method instead.

Parameters

1. a | array-like

The input array that you want to split.

2. split | array-like

The number of splits to make.

Return value

A list containing the split up NumPy arrays.

Examples

Consider the following 2D array:


        
        
            
                
                
                    a = np.array([[1,2,3],[4,5,6],[7,8,9]])
a
                
            
            array([[1, 2, 3],
       [4, 5, 6],
       [7, 8, 9]])

To split a into individual columns:


        
        
            
                
                
                    np.hsplit(a, 3)
                
            
            [array([[1],[4],[7]]),
 array([[2],[5],[8]]),
 array([[3],[6],[9]])]

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