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loop to regroup modality of a variable
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loop to regroup modality of a variable
#11
Applying changes via .loc is quite efficient, I think; If the number of such replacements is not too much,
your approach is ok. If you need to perform a lot of replacements, it would be better to consider applying some mapping, e.g. df.loc[... ...] = df.loc[... ...].map(lambda x: trans.get(x, x)), where trans is a dictionary, e.g. trans = {'old_value1': 'new_value1', 'old_value_2': 'new_value2', ...}
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#12
Hmmm I will try thanks.

So useful for manipulating quanti variable with many modalities.
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