Definitively, I don’t understand how work proscreener motor…

• 01/12/2020 at 10:15 PM #116558
  enriquem

  Good afternoon,
  Please, let me introduce my self, I am new in this world, and I am learning as much I can…
  But, I don’t understand how works proscreener search engine.
  Perhaps is because I came from another kind of programming,
  I was trying to study another screeners before to create my own screeners.
  I am using free proreal time V11 with values at end of day( soon I will update to realtime…)
  My doubts:

  Doubt 1:

  For example, I use one indicator that shows last zigzag value, I see that returned value matches with chart (image001.jpg)

  last zigzag value

  ZIG= ZigZag[4](close) zig1=zig[0] return zig1

  1 2 3

  ZIG= ZigZag[4](close) zig1=zig[0] return zig1

  But, same instruction in proscreener has different return(image002.jpg), why??

  zigzag screener

  if valle0=0 and zig1V[last]<zig2V[actual] then//-- actual candle higher than previous, increasing ramp zigV0= zig1V[0]//zig2V[actual]//--store value in tag valle0=1//--avoid to enter again in this loop endif

  1 2 3 4

  if valle0=0 and zig1V[last]<zig2V[actual] then//-- actual candle higher than previous, increasing ramp zigV0= zig1V[0]//zig2V[actual]//--store value in tag valle0=1//--avoid to enter again in this loop endif

  This hasn’t a lot of sense, I know,.. i just to understand the program..

  In fact , the returned value is not matching with any peak or valley (image003.jpg); i added a line for better visualization.

  ---

  doubt 2:

  Why  I see in some screeners at the tag declaration the use of “once” instruction?? Does it means that the code is not executed only one time?
  What the the rules for code execution?
  Normally, in another worlds, to execute several times, it is used loops, FOR; WHILE….

  All of this become because I have created a screener(image004.jpg), but it hasn’t the expected behaviour:

  What I want to do with this code:
  -Call zigzag function and detect changing trend(peak/valley), but only a number of periods before (with tag); not from very begining.
  -Store values of peaks and valleys in different tags…
  -Show results with recent peaks and valleys

  peak valley detection

  TIMEFRAME(daily) once last=50 once actual=49 once pico0=0 once valle0=0 once zigv0=0 //-- zigzag value of the valley once zigp0=0 //--zigzag value of the peal zig1V=ZigZag[4](close) //-- previous candle zig2V=ZigZag[4](close) //--actual candle //zig1=zig1V[last] // zig2=zig2V[last2] if valle0=0 and zig1V[last]<zig2V[actual] then//-- actual candle higher than previous, increasing ramp zigV0= close[actual]//zig2V[actual]//--store close value of the change in tag valle0=1//--avoid to enter again in this loop endif if (valle0=1 and pico0=0) and zig2V[actual]<zig1V[last] then//-- actual candle lower than previous, decreasing ramp zigP0=zig2V[actual]//--store close value of the change in tag pico0=1//---avoid to enter again in this loop endif //-- are necessary next sentences?? if last>2 then //-- assure that there are not negative values that could generate error last =last-1 endif if last2>2 then//-- -- assure that there are not negative values that could generate error last2=last2-1 endif c1= (pico0=1 and zigP0<>0)//-- was at least one peak c2= (valle0=1 and zigV0<>0)//-- was at leat on valley screener[(c1 and c2) ](zigv0) //--return value to order values, //--just to double check in the chart that stored values //are matching with the expected values

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  TIMEFRAME(daily) once last=50 once actual=49 once pico0=0 once valle0=0   once zigv0=0 //-- zigzag value of the valley once zigp0=0 //--zigzag value of the peal   zig1V=ZigZag[4](close) //-- previous candle zig2V=ZigZag[4](close) //--actual candle   //zig1=zig1V[last] // zig2=zig2V[last2]   if valle0=0 and zig1V[last]<zig2V[actual] then//-- actual candle higher than previous, increasing ramp zigV0= close[actual]//zig2V[actual]//--store close value of the change in tag valle0=1//--avoid to enter again in this loop endif   if (valle0=1 and pico0=0) and zig2V[actual]<zig1V[last] then//-- actual candle lower than previous, decreasing ramp zigP0=zig2V[actual]//--store close value of the change in tag pico0=1//---avoid to enter again in this loop endif       //-- are necessary next sentences?? if last>2 then //-- assure that there are not negative values that could generate error last =last-1 endif if last2>2 then//-- -- assure that there are not negative values that could generate error last2=last2-1 endif   c1= (pico0=1 and zigP0<>0)//-- was at least one peak c2= (valle0=1 and zigV0<>0)//-- was at leat on valley screener[(c1 and c2) ](zigv0) //--return value to order values,                               //--just to double check in the chart that stored values                               //are matching with the expected values

  -tags LAST and ACTUAL are discounted automatically? do  I need to decrease manually?
  If I not decrease them, comparision will be done with same values?

  I don’t know If I was really clear with my doubts…. (I tried believe me.. 🙂 )

  Thanks in advance for help…

   

  

  enriquem

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  01/13/2020 at 11:41 AM #116618
  Nicolas

  I might not understand the whole problem, but I think it comes from your own coding experience with other programming language.

  ProBuilder coding language has no array for personal variable (not yet but will come soon), and I think that you want your code to use it. A number in brackets [10] is just an offset of bars quantity on the chart, not the 10th value in an variable array.

  “once” instruction is used to give a variable a value only one time at the first read of the code.

  Have in mind, that ProScreener has a data history available of “only” 254 periods, so some discrepancies might occur between a chart and what ProScreener can read. ZigZag of 4 percent from peak to valley start at first bar available in history, and if the history is different, therefore the result can be different.

  

  Nicolas

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  01/13/2020 at 8:43 PM #116695
  enriquem

  Hello

  First, to say thanks for fast reply and demonstrate interest… 🙂

  Nicolas wrote:

  ProBuilder coding language has no array for personal variable (not yet but will come soon), and I think that you want your code to use it. A number in brackets [10] is just an offset of bars quantity on the chart, not the 10th value in an variable array.

  Yes, I see, but for me what is strange is from where is starting this offset… Does it means that the offset is for each candle? So, code is going trough every candle?… from the first one?

  In case of yes,  How to delimit it?

  What I want with my code is to have stored in tags:

  Valley0-> value of first zigzag change(from decrease to increase), no far than xxx candles
  Peak0->value of first zigzag change(from increase to decrease), no far than xxx candles

  Valley1-> value of second zigzag change(from decrease to increase), no far than xxx candles
  Peak1->value of second zigzag change(from increase to decrease), no far than xxx candles

  Valley2-> value of third zigzag change(from decrease to increase), no far than xxx candles
  Peak2->value of third zigzag change(from increase to decrease), no far than xxx candles

  But, I am not receiving expected returns…

  Thanks again for you sharing of knowledge  🙂

   

  

  enriquem

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  01/14/2020 at 10:18 AM #116742
  Nicolas

  Without arrays, you have 2 solutions:

  1. you know that you only want to store the last 3 zigzag points, so in this case, use 3 variables with 3 different names and change their values each time a new zigzag appear
  2. store all Valley in a variable “Valley” and make a loop through data to fetch all previous values of that variable and do what you want from there..

  Look at how I proceed in this indicator code example: https://www.prorealcode.com/prorealtime-indicators/zigzag-supdem-supply-and-demand-zones/

  I made loop through the lookback periods to compare variables “t” (valley) and “p” (peak) between them.

  Variables arrays will make our life easier! They will come very soon I hope!! 🙂

  

  Nicolas

  Keymaster

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  01/19/2020 at 7:52 PM #117243
  enriquem

  Hello,
  finally, I created that works… I still have doubts about how are manage some data types.but….. hahahah

  Is not perfect, and surely….could be improved.. but as I am beginner; I am more or less happy… 🙂

  I accept advices..

  Wolfe wave V0.1

  //-----------------------------Configure screener TIMEFRAME(daily) //--analysis for value conditions // Maximum % allowed between peaks 1-3 and also for valley 2-4 // Example: point 3 must not differ from point 1 more than this value maxVgap=2 //-- Analysis for timing conditions //-- in %, maximum diference between ramps //--Distance between points 1-3 and 2-4 must not exceed this value //--to assusre equitative ramps MaxTiempoGap=15 Lookback=80 //------------------------------ Code zz = ZigZag[4](close) p = zz<zz[1] and zz[1]>zz[2] v = zz>zz[1] and zz[1]<zz[2] if p then top = zz[1] endif if v then bottom = zz[1] endif //------ Point 1 detection for i =lookback downto 1 do if v[i] then Vpunto1= bottom[i] punto1=1 vela1=i break ENDIf next //--------Point 2 detection if punto1=1 then//-- Only in first point of waves is already detected for i =vela1-1 downto 1 do //--start to search from previous point if p[i] then Vpunto2= top[i] punto2=1 vela2=i break ENDIf next endif //------Point 3 detection if punto2=1 then for i =vela2-1 downto 1 do//--start to search from previous point if v[i] then Vpunto3= bottom[i] punto3=1 vela3=i break ENDIf next endif //-----------Point 4 detection if punto3=1 then for i =vela3-1 downto 1 do//--start to search from previous point if p[i] then Vpunto4= top[i] punto4=1 vela4=i break ENDIf next endif //--------Point 5 detection if punto4=1 then for i =vela4-1 downto 1 do//--start to search from previous point if v[i] then Vpunto5= bottom[i] punto5=1 vela5=i break ENDIf next endif //---------------------------------Analysis //-- Value Point 3 compared with point 1 must not exceed the configured delta Gap13=abs((Vpunto3*100)/Vpunto1)-100 Gap13OK=Gap13 <maxVGap //-- Value Point 4 compared with point 2 must not exceed the configured delta Gap24=abs((Vpunto4*100)/Vpunto2)-100 Gap24OK=abs(Gap24) <maxVGap //--Distance between candles of point 1-2 and 3-4 must not differ more than the percentage set at begin,assuring equitative ramps Tiempo12=abs(Vela2-Vela1) Tiempo34=abs(Vela4-Vela3) TiemposGap=abs(((tiempo34*100)/Tiempo12)-100) CT=TiemposGap<MaxTiempoGap //--Distance between points 1-3 and 2-4, must be lower than 3 candles //--may be used also percentage Tiempo13=abs(Vela3-Vela1)//23 Tiempo24=abs(Vela2-Vela4)//4 CD=abs(Tiempo13-Tiempo24)<3 C1= (punto1=1) and (Vpunto1<>0) C2= (punto2=1) and (Vpunto2<>0) C3= (punto3=1) and (Vpunto3<>0) and (Vpunto3 > Vpunto1) and Gap13OK //--ramps are equitative C4= vela4<>0 and (punto4=1) and (Vpunto4<>0) and (Vpunto4 < Vpunto2) and Gap24OK C5= vela5<>0 and (punto5=1) and (Vpunto5<>0) and (Vpunto5 < Vpunto3) //-- Point 5 lowe than point 3 screener[C1 and C2 and C3 and C4 and C5 and CT and CD ](Vpunto1)//- First point of WOLF WAVE, search for this valley

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  //-----------------------------Configure screener TIMEFRAME(daily) //--analysis for value conditions   // Maximum % allowed between peaks 1-3 and also for valley 2-4   // Example: point 3 must not differ from point 1 more than this value maxVgap=2   //-- Analysis for timing conditions   //-- in %, maximum diference between ramps   //--Distance between points 1-3 and 2-4 must not exceed this value   //--to assusre equitative ramps MaxTiempoGap=15 Lookback=80   //------------------------------ Code zz = ZigZag[4](close) p = zz<zz[1] and zz[1]>zz[2] v = zz>zz[1] and zz[1]<zz[2]   if p then top = zz[1] endif if v then bottom = zz[1] endif //------ Point 1 detection for i =lookback downto 1  do if v[i] then Vpunto1= bottom[i] punto1=1 vela1=i break ENDIf next   //--------Point 2 detection if punto1=1 then//-- Only in first point of waves is already detected for i =vela1-1 downto 1  do //--start to search from previous point if p[i] then Vpunto2= top[i] punto2=1 vela2=i break ENDIf next endif   //------Point 3 detection if punto2=1 then for i =vela2-1 downto 1  do//--start to search from previous point if v[i] then Vpunto3= bottom[i] punto3=1 vela3=i break ENDIf next endif   //-----------Point 4 detection if punto3=1 then for i =vela3-1 downto 1  do//--start to search from previous point if p[i] then Vpunto4= top[i] punto4=1 vela4=i break ENDIf next endif   //--------Point 5 detection if punto4=1 then for i =vela4-1 downto 1  do//--start to search from previous point if v[i] then Vpunto5= bottom[i] punto5=1 vela5=i break ENDIf next endif   //---------------------------------Analysis   //-- Value Point 3 compared with point 1 must not exceed the configured delta Gap13=abs((Vpunto3*100)/Vpunto1)-100 Gap13OK=Gap13 <maxVGap   //-- Value Point 4 compared with point 2 must not exceed the configured delta Gap24=abs((Vpunto4*100)/Vpunto2)-100 Gap24OK=abs(Gap24) <maxVGap   //--Distance between candles of point 1-2 and 3-4 must not differ more than the percentage set at begin,assuring equitative ramps Tiempo12=abs(Vela2-Vela1) Tiempo34=abs(Vela4-Vela3) TiemposGap=abs(((tiempo34*100)/Tiempo12)-100) CT=TiemposGap<MaxTiempoGap   //--Distance between points 1-3 and 2-4, must be lower than 3 candles //--may be used also percentage Tiempo13=abs(Vela3-Vela1)//23 Tiempo24=abs(Vela2-Vela4)//4 CD=abs(Tiempo13-Tiempo24)<3   C1= (punto1=1) and (Vpunto1<>0) C2= (punto2=1) and (Vpunto2<>0) C3= (punto3=1) and (Vpunto3<>0) and (Vpunto3 > Vpunto1) and Gap13OK //--ramps are equitative C4= vela4<>0 and (punto4=1) and (Vpunto4<>0) and (Vpunto4 < Vpunto2) and Gap24OK C5= vela5<>0 and (punto5=1) and (Vpunto5<>0) and (Vpunto5 < Vpunto3) //-- Point 5 lowe than point 3   screener[C1 and C2 and C3 and C4 and C5 and CT and CD ](Vpunto1)//- First point of WOLF WAVE, search for this valley

   

  Was created in Spanish.. sorry for that.

  Tiempo -> Time
  Vela-> Candle
  Punto->Point

  What does this code:
  With this code is detect Wolfe wave pattern, can be configured to stablish the quality of the wolfe waves, detecting delta between candles and values of points.

  What doesn’t does  this code:
  Detect if the last candle of chart is in buying area, wolfe pattern could be some candles before…

  In attachment there is an example of result…

  What will be great from code Suite:
  -Arrays.
  -Debug of tags, or a list with tag values at end of execute, I had to add returning 1 by 1 all the tags to be sure that were ok

  Thanks

   

  

  enriquem

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  01/20/2020 at 7:51 PM #117353
  enriquem

  Hi, new version,

  With this other type, are find values with current scenario in the point 5,

  Show Wolfe actualV1.1

  //-----------------------------Configure screener TIMEFRAME(daily) //--analysis for value conditions // Maximum % allowed between peaks 1-3 and also for valley 2-4 // Example: point 3 must not differ from point 1 more than this value maxVgap=2 //-- Analysis for timing conditions //-- in %, maximum diference between ramps //--Distance between points 1-3 and 2-4 must not exceed this value //--to assusre equitative ramps MaxTiempoGap=30 Lookback=80 //------------------------------ Code zz = ZigZag[4](close) p = zz<zz[1] and zz[1]>zz[2] v = zz>zz[1] and zz[1]<zz[2] if p then top = zz[1] endif if v then bottom = zz[1] endif //------ Point 5 detection for i =1 to lookback do if v[i] then Vpunto5= bottom[i] punto5=1 vela5=i break ENDIf next //--------Point 4 detection if punto5=1 then//-- Only in first point of waves is already detected for i =vela5+1to lookback do //--start to search from previous point if p[i] then Vpunto4= top[i] punto4=1 vela4=i break ENDIf next endif //------Point 3 detection if punto4=1 then for i =vela4+1 to lookback do//--start to search from previous point if v[i] then Vpunto3= bottom[i] punto3=1 vela3=i break ENDIf next endif //-----------Point 2 detection if punto3=1 then for i =vela3+1to lookback do//--start to search from previous point if p[i] then Vpunto2= top[i] punto2=1 vela2=i break ENDIf next endif //--------Point 1 detection if punto2=1 then for i =vela2+1 to lookback do//--start to search from previous point if v[i] then Vpunto1= bottom[i] punto1=1 vela1=i break ENDIf next endif //-----------Point recent peak detection if punto5=1 then for i =1 to lookback do//- if p[i] then //Vpunto2= top[i] Recentpeak=1 Peakpos=i break ENDIf next endif //---------------------------------Analysis //-- Value Point 3 compared with point 1 must not exceed the configured delta Gap13=abs((Vpunto3*100)/Vpunto1)-100 Gap13OK=Gap13 <maxVGap //-- Value Point 4 compared with point 2 must not exceed the configured delta Gap24=abs((Vpunto4*100)/Vpunto2)-100 Gap24OK=abs(Gap24) <maxVGap //--Distance between candles of point 1-2 and 3-4 must not differ more than the percentage set at begin,assuring equitative ramps Tiempo12=abs(Vela2-Vela1) Tiempo34=abs(Vela4-Vela3) TiemposGap=abs(((tiempo34*100)/Tiempo12)-100) CT=TiemposGap<MaxTiempoGap //--Distance between points 1-3 and 2-4, must be lower than 3 candles //--may be used also percentage Tiempo13=abs(Vela3-Vela1)//23 Tiempo24=abs(Vela2-Vela4)//4 CD=abs(Tiempo13-Tiempo24)<4 buyOK=(Recentpeak=1) and (Peakpos > vela5) //-- Last Zigzag was the valley of Point 5, not peak aof zigzag after point 5 C1= (punto1=1) and (Vpunto1<>0) C2= (punto2=1) and (Vpunto2<>0) C3= (punto3=1) and (Vpunto3<>0) and (Vpunto3 > Vpunto1) and Gap13OK //--ramps are equitative C4= vela4<>0 and (punto4=1) and (Vpunto4<>0) and (Vpunto4 < Vpunto2) and Gap24OK C5= vela5<>0 and (punto5=1) and (Vpunto5<>0) and (Vpunto5 < Vpunto3) //-- Point 5 lowe than point 3 screener[C1 and C2 and C3 and C4 and C5 and CT and CD and buyOK ](Vpunto1)//- First point of WOLF WAVE, search for thi valley

  1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126

  //-----------------------------Configure screener TIMEFRAME(daily) //--analysis for value conditions // Maximum % allowed between peaks 1-3 and also for valley 2-4 // Example: point 3 must not differ from point 1 more than this value maxVgap=2   //-- Analysis for timing conditions //-- in %, maximum diference between ramps //--Distance between points 1-3 and 2-4 must not exceed this value //--to assusre equitative ramps MaxTiempoGap=30 Lookback=80   //------------------------------ Code zz = ZigZag[4](close) p = zz<zz[1] and zz[1]>zz[2] v = zz>zz[1] and zz[1]<zz[2]   if p then top = zz[1] endif if v then bottom = zz[1] endif //------ Point 5 detection for i =1 to lookback  do if v[i] then Vpunto5= bottom[i] punto5=1 vela5=i break ENDIf next   //--------Point 4 detection if punto5=1 then//-- Only in first point of waves is already detected for i =vela5+1to lookback  do //--start to search from previous point if p[i] then Vpunto4= top[i] punto4=1 vela4=i break ENDIf next endif   //------Point 3 detection if punto4=1 then for i =vela4+1 to lookback  do//--start to search from previous point if v[i] then Vpunto3= bottom[i] punto3=1 vela3=i break ENDIf next endif   //-----------Point 2 detection if punto3=1 then for i =vela3+1to lookback  do//--start to search from previous point if p[i] then Vpunto2= top[i] punto2=1 vela2=i break ENDIf next endif   //--------Point 1 detection if punto2=1 then for i =vela2+1 to lookback  do//--start to search from previous point if v[i] then Vpunto1= bottom[i] punto1=1 vela1=i break ENDIf next endif   //-----------Point recent peak detection if punto5=1 then for i =1 to lookback  do//- if p[i] then //Vpunto2= top[i] Recentpeak=1 Peakpos=i break ENDIf next endif   //---------------------------------Analysis   //-- Value Point 3 compared with point 1 must not exceed the configured delta Gap13=abs((Vpunto3*100)/Vpunto1)-100 Gap13OK=Gap13 <maxVGap   //-- Value Point 4 compared with point 2 must not exceed the configured delta Gap24=abs((Vpunto4*100)/Vpunto2)-100 Gap24OK=abs(Gap24) <maxVGap   //--Distance between candles of point 1-2 and 3-4 must not differ more than the percentage set at begin,assuring equitative ramps Tiempo12=abs(Vela2-Vela1) Tiempo34=abs(Vela4-Vela3) TiemposGap=abs(((tiempo34*100)/Tiempo12)-100) CT=TiemposGap<MaxTiempoGap   //--Distance between points 1-3 and 2-4, must be lower than 3 candles //--may be used also percentage Tiempo13=abs(Vela3-Vela1)//23 Tiempo24=abs(Vela2-Vela4)//4 CD=abs(Tiempo13-Tiempo24)<4   buyOK=(Recentpeak=1) and (Peakpos > vela5)  //-- Last Zigzag was the valley of Point 5, not peak aof zigzag after point 5   C1= (punto1=1) and (Vpunto1<>0) C2= (punto2=1) and (Vpunto2<>0) C3= (punto3=1) and (Vpunto3<>0) and (Vpunto3 > Vpunto1) and Gap13OK //--ramps are equitative C4= vela4<>0 and (punto4=1) and (Vpunto4<>0) and (Vpunto4 < Vpunto2) and Gap24OK C5= vela5<>0 and (punto5=1) and (Vpunto5<>0) and (Vpunto5 < Vpunto3) //-- Point 5 lowe than point 3   screener[C1 and C2 and C3 and C4 and C5 and CT and CD and buyOK ](Vpunto1)//- First point of WOLF WAVE, search for thi valley

   

  

  enriquem

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  01/21/2020 at 10:32 AM #117367
  Nicolas

  Thanks a lot for this valuable screener code! It should be featured in the library! Could you please put it there if you don’t mind? With some explanations? If you don’t have time i would do it for you.

  Share your code into the library!

  

  Nicolas

  Keymaster

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  01/30/2020 at 8:30 PM #118305
  enriquem

  Hello and sorry for my absence..

  I was busy these last days…

  For me will be be very satisfactory to share my first code with the community, of course…

  I will try to do it during weekend, did you played with the screener?

  For me what is a pity is that screener cannot draw in the chart.. would be nicest…

   

  

  enriquem

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  01/31/2020 at 8:57 AM #118328
  Nicolas

  This is a nice stock screener that will benefit to a lot of people.

  The screener is not a code to plot on the chart 🙂

  Create an indicator from your screener code and add it on the price chart.

  

  Nicolas

  Keymaster

  Topics: 81

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