Does anyone know how to make an EMA based off the RSI values?

dimadude101

The code below is what I tried to come up with but doesn't seem to work. I am trying to have an EMA 15 based off the RSI 14. Usually EMA is based off closing candle price, but here I want to make it based off the RSI instead. Can anybody help please?

   @property
    def EMA1(self):
        rsi14 = ta.rsi(self.candles, 14, True)
        ema_rsi = talib.EMA(rsi14, 15)
        print('rsi14:{} - ema_rsi:{}'.format(rsi14[-1], ema_rsi[-1]))

Gabri

What's wrong? It seems right. Aren't values returned as expected?
Write an example with values printed by this and what you expected

dimadude101

Yep I get this error code:

============================== EXCEPTION TRACEBACK:
  File "/usr/local/bin/jesse", line 8, in <module>
    sys.exit(cli())
  File "/usr/local/lib/python3.7/site-packages/click/core.py", line 764, in __call__
    return self.main(*args, **kwargs)
  File "/usr/local/lib/python3.7/site-packages/click/core.py", line 717, in main
    rv = self.invoke(ctx)
  File "/usr/local/lib/python3.7/site-packages/click/core.py", line 1137, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/usr/local/lib/python3.7/site-packages/click/core.py", line 956, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/usr/local/lib/python3.7/site-packages/click/core.py", line 555, in invoke
    return callback(*args, **kwargs)
  File "/usr/local/lib/python3.7/site-packages/jesse/__init__.py", line 286, in backtest
    backtest_mode.run(start_date, finish_date, chart=chart, tradingview=tradingview)
  File "/usr/local/lib/python3.7/site-packages/jesse/modes/backtest_mode/__init__.py", line 58, in run
    simulator(candles)
  File "/usr/local/lib/python3.7/site-packages/jesse/modes/backtest_mode/__init__.py", line 225, in simulator
    r.strategy._execute()
  File "/usr/local/lib/python3.7/site-packages/jesse/strategies/Strategy.py", line 817, in _execute
    self._check()
  File "/usr/local/lib/python3.7/site-packages/jesse/strategies/Strategy.py", line 608, in _check
    if self.should_short() and self.should_long():
  File "/Users/dmitry/jesse.ai/strategies/EMA/__init__.py", line 16, in should_short
    if self.EMA1 < self.EMA2:
=========================================================================

 Uncaught Exception: ValueError: The truth value of an array with more than one element is ambiguous. Use a.any() or a.all() ```

Gabri

try using, in should_long and should_short, this instead:
if self.EMA1[-1] < self.EMA2[-1]:
or
if self.EMA1[-1] > self.EMA2[-1]:

dimadude101

Gabri This worked thank you! Why do you need to do the -1 so I can learn for the next time?

Gabri

dimadude101
Oh, it's quite simple, because self.EMA1 or self.EMA2 are not simple numbers ma they are tuples/arrays, so a lot of numbers. You cannot compare (if one is greater than another) with two tuples of numbers ..but just with two single numbers.
self.EMA1[-1] meas simply to get the last value (and in this case is the current value of the ema1)

dimadude101

Gabri thanks man a lot