@yacc-don Sorry, It would be convenient if I could get the date of the "data", could anybody tell me how to do it?

class _DwtBase(bt.Indicator):

    def once(self, start, end):
          print( self.datas[0][j].date )

Thansk

@yacc-don It would be convenient if could get the date of the date during debug.

It would be convenient if I could get the date of the date, could anybody tell me how to do it?

For example:

class _DwtBase(bt.Indicator):

    def once(self, start, end):
          print( self.dates[0][j].date )

@backtrader

Regards.

@Yacc-Don @Yacc-Don Or you are testing if it is Nan. Is it equivalent to math.isnan()?

@Yacc-Don Or you are testing if it is Nan. Is it equivalent to math.isnan()?

            self.lines.zigzag[idx] = (self.zigzag_peak[idx] - absplotdist) if self.zigzag_peak[idx] == self.zigzag_peak[idx] else (self.zigzag_valley[idx] + absplotdist) if self.zigzag_valley[idx] == self.zigzag_valley[idx] else float('NaN')
            self.lines.zigzag[idx] = (self.zigzag_peak[idx] - absplotdist) if True else (self.zigzag_valley[idx] + absplotdist) if True else float('NaN')

Thank for sharing.

About your former version of zigzag code, what's the difference with these two line of the code?

@bigdavediode said in Zigzag Indicator:

                self.lines.zigzag[idx] = (self.zigzag_peak[idx] - absplotdist) if self.zigzag_peak[idx] == self.zigzag_peak[idx] else (self.zigzag_valley[idx] + absplotdist) if self.zigzag_valley[idx] == self.zigzag_valley[idx] else float('NaN')
                self.lines.zigzag[idx] = (self.zigzag_peak[idx] - absplotdist) if True else (self.zigzag_valley[idx] + absplotdist) if True else float('NaN')

Thanks for sharing.
I have a question, what's the difference between the two lines of the code.