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Parameters Return value Examples Converting to float64 Converting to float32 Original array is left intact

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NumPy | asfarray method

schedule Aug 12, 2023

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Parameters Return value Examples Converting to float64 Converting to float32 Original array is left intact

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Numpy's asfarray(~) converts an array to float type.

Parameters

1. a | array-like

The array on which to perform the method.

2. dtype | str or type | optional

The float type to convert the input array to. If the input array is of type int, then it is converted to float64.

Return value

A Numpy array of type float.

Examples

Converting to float64


        
        
            
                
                
                    x = [1,2,3]
y = np.asfarray(x)
y.dtype
                
            
            dtype('float64')

As a reminder, all int are converted to float64.

Converting to float32

We need to specify dtype="float32":


        
        
            
                
                
                    x = [1,2,3]
y = np.asfarray(x, dtype="float32")
y.dtype
                
            
            dtype('float32')

Original array is left intact

Note that the original array is left intact, that is:


        
        
            
                
                
                    x = np.array([1,2,3])
y = np.asfarray(x)
x.dtype
                
            
            dtype('int64')

Here, y is of type float, but x is of type int.

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Published by Isshin Inada

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