Difference between map, applymap and apply in Pandas
|
map |
applymap |
apply |
|---|---|---|
| Defined only in Series | Defined only in Dataframe | Defined in both Series and DataFrame |
| Accepts dictionary, Series, or callable | Accept callables only | Accept callables only |
| Series.map() Operate on one element at time | DataFrame.applymap() Operate on one element at a time | operates on entire rows or columns at a time for Dataframe, and one at a time for Series.apply |
| Missing values will be recorded as NaN in the output. | Performs better operation than apply(). | Suited to more complex operations and aggregation. |
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