Store DEMA Indicator High/Low

Ξ3 · 2019-11-19T07:39:41+00:00

Hi, Is there a way to store or calculate the highest / lowest value that an indicator reached for each bar? MyIndicator = DEMA[Variable](Close) MyIndicatorHi = Highest value that MyIndicator reached during the formation of a particular bar MyIndicatorLo = Lowest value that MyIndicator reached during the formation of a particular bar Many Thanks.

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11/19/2019 at 8:39 AM #113086 quote

Ξ3
Participant

Senior

Hi,

Is there a way to store or calculate the highest / lowest value that an indicator reached for each bar?

MyIndicator = DEMA[Variable](Close)

MyIndicatorHi = Highest value that MyIndicator reached during the formation of a particular bar

MyIndicatorLo = Lowest value that MyIndicator reached during the formation of a particular bar

Many Thanks.

11/19/2019 at 9:27 AM #113094 quote
robertogozzi
Moderator

Legend
There yo go:
```
MyIndicator   = DEMA[Variable](Close)
MyIndicatorHi = Highest[variable](MyIndicator)
MyIndicatorLo = Lowest[variable](MyIndicator)
```
11/19/2019 at 9:51 AM #113099 quote

Ξ3
Participant

Senior

Hi Roberto,

Many thanks for your response but I think my request was not clear enough.

In your code the Highest function returns the highest CLOSE value in the past “variable” periods.
What I would like to store/calculate is the highest HIGH/LOW value per bar (so only for 1 period)

MyIndicatorHi = DEMA[Variable](High) won’t work either as it uses the High value for current and past “variable” periods.
What I am looking for is some way to use the High (or Low) value for the current bar but the Close value for past “variable” periods.

A simple 3 period MA would be:
MyMA = Close + Close[1] + Close[2]
MyMAHi = High + Close[1] + Close[2]
MyMALo = Low + Close[1] + Close[2]

But how to calculate this for an Infinite Impulse Response (IIR) filter with a variable lookback period such as a DEMA is what I am trying to do.

11/19/2019 at 9:54 AM #113100 quote

Ξ3
Participant

Senior

CORRECTION:

A simple 3 period MA would be:
MyMA = (Close + Close[1] + Close[2]) / 3
MyMAHi = (High + Close[1] + Close[2]) / 3
MyMALo = (Low + Close[1] + Close[2]) / 3

11/19/2019 at 10:08 AM #113102 quote
robertogozzi
Moderator

Legend
It’s not possible, when you calculate an average, whatever it is, such as:
```
Average[10](close)
```
you cannot ask it to use HIGH for just the most recent period.

You could use
```
(Average[10](close) + high) / 2
```
but it’s not the same.

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11/19/2019 at 10:19 AM #113104 quote

Ξ3
Participant

Senior

Thanks for that Roberto. It gave me a new idea…
Do you perhaps have the ProRealTime code to calculate the DEMA?

11/19/2019 at 10:29 AM #113106 quote
Vonasi
Moderator

Master
DEMA is quite simple to calculate:
```
p=20

a = exponentialaverage[p](close)
b = exponentialaverage[p](a)
mydema = (2*a)-b

return mydema
```
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