DataFrame.ctypes

Return the inferred column types in the DataFrame. This returns a Series with the data type of each column. The result’s index is the original DataFrame’s columns.

danfo.DataFrame.dtypes [source]
Returns:
       return  Series
Examples
Returns auto-generated index of a DataFrame
Node
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const dfd = require("danfojs-node")
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​
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let data = {"A": [-20.1, 30, 47.3, -20],
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            "B": [34, -4, 5, 6], 
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            "C": [20, -20, 30, -40]}
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​
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let df = new dfd.DataFrame(data)
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​
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df.ctypes.print()
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​
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Output
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╔═══╤══════════════════════╗
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║   │ 0                    ║
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╟───┼──────────────────────╢
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║ A │ float32              ║
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╟───┼──────────────────────╢
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║ B │ int32                ║
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╟───┼──────────────────────╢
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║ C │ int32                ║
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╚═══╧══════════════════════╝
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Columns with mixed types are represented as string.
Node
Browser
1
​
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const dfd = require("danfojs-node")
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​
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let data = {"A": [-20.1, 30, 47.3, -20],
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            "B": [34, -4, 5, 6], 
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            "C": [20, -20, 30, -40],
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            "D": ["a", "b", 20, 2.5]}
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let df = new dfd.DataFrame(data)
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​
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df.ctypes.print()
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​
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Output
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╔═══╤══════════════════════╗
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║   │ 0                    ║
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╟───┼──────────────────────╢
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║ A │ float32              ║
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╟───┼──────────────────────╢
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║ B │ int32                ║
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╟───┼──────────────────────╢
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║ C │ int32                ║
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╟───┼──────────────────────╢
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║ D │ string               ║
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╚═══╧══════════════════════╝
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Note: To cast a type, use the astype method. 

DataFrame.select_dtypes

DataFrame.index

Last modified 1yr ago

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Contents

Examples