How to generate CrossOver signal with "slowK and slowD" from TALIB and or BT Stochastic fonction ?

[GwadaMan]

Hello gas !!!

I discover BT tool with Remroc.
Could you please help me to find out the solution to display CrossOver signal coming from "slowK and slowD" of TALIB Stochastic fonction ?

[backtrader]

In Unix everything is a file and in backtrader (mostly) everything is a lines object.

Both Stochastic indicators (own and from ta-lib) declare lines.

• Docs - ta-lib Indicator Reference : slowK and slowD
• Docs - Indicator Reference : percK and percD

Lines are reachable under lines attribute as in:

percK = Mystochastic.lines.percK

And backtrader contains an indicator to generate signals: CrossOver. There was a recent blog post using it (actually mixing with numbers).

• Blog - Crossing Over Numbers

In the docs you can also see additional crosses from data feeds and sma

• Doc - Comission Schemes

When no line is specified the 1st line of the object will be used.

It's finally so easy as:

crossover = bt.ind.CrossOver(line1, line2)

[backtrader]

See also this new sample - Blog - Plotting Date Ranges

[GwadaMan]

Great it's working fine !
Thx !

[GwadaMan]

How can I generated Stochastic signal from other line like "ema of (data)" in Backtrader ?

[backtrader]

See the front page: https://www.backtrader.com

[cmmp]

Sorry to bring up an old thread, but it would be nice if in the documentation https://www.backtrader.com/docu/indautoref.html , the parameters of bt.ind.CrossOver were defined. There is no params field, so I was not sure if it could be used along with other indicators.

[backtrader]

CrossOver has no parameters. It takes data feeds which will generate a 1, 0 or -1 depending if there is a cross-over to the upside, nothing or a cross-over to the downside.

From the documentation:

This indicator gives a signal if the provided datas (2) cross up or down

  - 1.0 if the 1st data crosses the 2nd data upwards
  - -1.0 if the 1st data crosses the 2nd data downwards