Problems with pandas_ta indicators rsi

Question

I try to put 1 por trading strategy when rsi if > 30 and 0 if the previous period if < 30

data['rsi_compra'] = 1 if data.rsi > 30 & data.rsi.shift(periods = 1) < 30 else 0

Raise this error

Cannot perform 'rand_' with a dtyped [float64] array and scalar of type [bool]

eshirvana · Answer 1 · 2021-12-30T16:37:27.427

0

Try this:

data['rsi_compra'] = ((data.rsi > 30) & (data.rsi.shift(periods=1) < 30)).map(int)

you should keep in mind yu are working with pandas series and not a scalar value , while & operand applies to a single item in that series & using parenthesis is necessary for that purpose.

edited Dec 30 '21 at 16:37

answered Dec 30 '21 at 15:53

eshirvana

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thank you the commments but the type must be float, because compare two numbers – Emi Colombo Dec 30 '21 at 16:37
what you mean? mapping to int is just to cast True/False to 1/0 for presentation purposes. has nothing to do with comparing – eshirvana Dec 30 '21 at 16:39

gilf0yle · Answer 2 · 2021-12-30T16:09:25.570

0

if you simply wish to do as, if >30 is 1 one <30 as 0

data['rsi_compra'] = (data.rsi > 30 ).astype(int)

and if you want peroid as you mentioned try this

data['rsi_compra'] = ((data.rsi > 30) & (data.rsi.shift(periods=1) < 30)).astype(int)

edited Dec 30 '21 at 16:09

answered Dec 30 '21 at 15:57

gilf0yle

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Problems with pandas_ta indicators rsi

2 Answers2