ATR difference with Metatrader? + original welles wilder version

Hi,
I'm using backtraders ATR. It doesn't seem like I'm getting the same ATR values as in metatrader. I have downloaded metatraders data and noticed backtrader's ATR values are different than in metatrader when comparing.
Additionally, I'm looking for the original welles wilder version (non smoothed). on Github, it looks like an SMA was used so I thought it'd be the same as in metatrader.
Anyone who has the original version by any chance?
thanks

@JensHalsberghe I just met this question and solve it.
you should use this class and the ATR .
class AverageTrueRange(Indicator): ''' Defined by J. Welles Wilder, Jr. in 1978 in hiMY_s book *"New Concepts in Technical Trading Systems"*. The idea is to take the close into account to calculate the range if it yields a larger range than the daily range (High  Low) Formula:  SmoothedMovingAverage(TrueRange, period) See:  http://en.wikipedia.org/wiki/Average_true_range # 修改了算法，使用我自己的方法 ''' alias = ('ATR',) lines = ('atr',) params = (('period', 14), ('Average', Average)) def _plotlabel(self): plabels = [self.p.period] plabels += [self.p.movav] * self.p.notdefault('movav') return plabels def __init__(self): self.lines.atr = self.p.Average(TR(self.data), period=self.p.period) super(AverageTrueRange, self).__init__()

Thanks for your reply. What would your full code be for this? I added the code like this and am getting an error in a strategy. FYI I was getting an error for the following at first so I modified it as you'll be able to see in the code below
params = (('period', 14), ('Average', Average))
from __future__ import (absolute_import, division, print_function, unicode_literals) import backtrader as bt class TrueHigh(bt.Indicator): ''' Defined by J. Welles Wilder, Jr. in 1978 in his book *"New Concepts in Technical Trading Systems"* for the ATR Records the "true high" which is the maximum of today's high and yesterday's close Formula:  truehigh = max(high, close_prev) See:  http://en.wikipedia.org/wiki/Average_true_range ''' lines = ('truehigh',) def __init__(self): self.lines.truehigh = bt.Max(self.data.high, self.data.close(1)) super(TrueHigh, self).__init__() class TrueLow(bt.Indicator): ''' Defined by J. Welles Wilder, Jr. in 1978 in his book *"New Concepts in Technical Trading Systems"* for the ATR Records the "true low" which is the minimum of today's low and yesterday's close Formula:  truelow = min(low, close_prev) See:  http://en.wikipedia.org/wiki/Average_true_range ''' lines = ('truelow',) def __init__(self): self.lines.truelow = bt.Min(self.data.low, self.data.close(1)) super(TrueLow, self).__init__() class TrueRange(bt.Indicator): ''' Defined by J. Welles Wilder, Jr. in 1978 in his book New Concepts in Technical Trading Systems. Formula:  max(high  low, abs(high  prev_close), abs(prev_close  low) which can be simplified to  max(high, prev_close)  min(low, prev_close) See:  http://en.wikipedia.org/wiki/Average_true_range The idea is to take the previous close into account to calculate the range if it yields a larger range than the daily range (High  Low) ''' alias = ('TR',) lines = ('tr',) def __init__(self): self.lines.tr = TrueHigh(self.data)  TrueLow(self.data) super(TrueRange, self).__init__() class AverageTrueRange(bt.Indicator): ''' Defined by J. Welles Wilder, Jr. in 1978 in hiMY_s book *"New Concepts in Technical Trading Systems"*. The idea is to take the close into account to calculate the range if it yields a larger range than the daily range (High  Low) Formula:  SmoothedMovingAverage(TrueRange, period) See:  http://en.wikipedia.org/wiki/Average_true_range # 修改了算法，使用我自己的方法 ''' alias = ('ATR',) lines = ('atr',) params = (('period', 14), ('Average', 14)) def _plotlabel(self): plabels = [self.p.period] plabels += [self.p.movav] * self.p.notdefault('movav') return plabels def __init__(self): self.lines.atr = self.p.Average(TR(self.data), period=self.p.period) super(AverageTrueRange, self).__init__()
when I initialize it it in a strategy as follows, I'm getting an error
def __init__(self): self.ATR = AverageTrueRange(self.datas[0])
error:
<ipythoninput36567f96f1b43f> in __init__(self) 82 83 def __init__(self): > 84 self.lines.atr = self.p.Average(TR(self.data), period=self.p.period) 85 super(AverageTrueRange, self).__init__() TypeError: 'int' object is not callable
thanks

@JensHalsberghe you lose some code ,they shold be imported from others. for example
from __future__ import (absolute_import, division, print_function, unicode_literals) from . import Indicator, Max, Min, MovAv,Average

@tianjixuetu thanks for the followup. when I run this, I'm getting an error however.
 ImportError Traceback (most recent call last) <ipythoninput5aadcf5db5945> in <module> 1 > 2 from . import Indicator, Max, Min, MovAv,Average 3 4 class AverageTrueRange(bt.Indicator): 5 ''' ImportError: cannot import name 'MovAv' from '__main__' (unknown location)