Please help: How can I refer to past conditions NOT by period

fiboman3000 · 2021-05-25T08:01:32+00:00

Hello, how can I refer to a past condition NOT by period with square brackets […] BUT by last time, 2nd last, 3rd last time and so on? Meaning and I dont care when exactly the condition was true, I just want to get values from it. Please help forum brains Thx & cheers

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05/25/2021 at 9:01 AM #170312 quote

fiboman3000
Participant

Junior

Hello,

how can I refer to a past condition NOT by period with square brackets […] BUT by last time, 2nd last, 3rd last time and so on?

Meaning and I dont care when exactly the condition was true, I just want to get values from it.

Please help forum brains

Thx & cheers

05/25/2021 at 9:40 AM #170323 quote
robertogozzi
Moderator

Legend
You need to use a FOR…NEXT iteration.

You simply set the number of the occurrence you want to retrieve and it will be returned in variable EventBar (0=no occurrences):
```
N        = 3       //3rd occurrence
Avg      = close CROSSES OVER average[20,0](close) //event to be searched for
EventBar = 0
Count    = 0
FOR i = 0 TO BarIndex - 1
   IF Avg[i] THEN
      EventBar = BarIndex[i]
      Count    = Count + 1
      IF Count = N THEN
         Break
      ENDIF
   ENDIF
NEXT
```
05/25/2021 at 2:07 PM #170383 quote
Vonasi
Moderator

Master
Alternatively use an array to store the value and increase the array location by +1 each time you store a value.

Not tested.
```
if (your event) then
a = a + 1
$myvalue[a] = close //store closing price at time of your event
endif

//retrieve 2nd to last event
if a >=2 then
secondlast = $myvalue[a-1]
endif

//retrieve 5th to last event
if a >=5 then
secondlast = $myvalue[a-4]
endif
```
robertogozzi thanked this post
05/25/2021 at 3:03 PM #170387 quote

robertogozzi
Moderator

Legend

Vonasi‘s solution is much better because you don’t waste time to scan bars backwards, which can be very time consuming if you want retrieve, say, the 100th event!

Vonasi thanked this post

05/26/2021 at 8:46 AM #170442 quote

fiboman3000
Participant

Junior

Thanks a lot guys!:) much appreciated…
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Posts

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This topic contains 4 replies,
has 3 voices, and was last updated by fiboman3000
5 years, 4 months ago.

Topic Details

Forum:	ProBuilder: Indicators & Custom Tools
Language:	English
Started:	05/25/2021
Status:	Active
Attachments:	No files