need help with a plot in EasyLanguage with knowledge of ThinkScript

May 19th, 2015, 04:28 PM

ABCTG

kidvic,

if you always want the trendline to mark the high three candles ago you'll have to update the trendline location every bar.
Look up TL_SetBegin and TL_SetEnd in the Tradestation help. This will show you how to change the start and end points for a trendline.

Regards,
ABCTG

Still not working as I've updated the code with your help:

vars: TLID (High[3]), IntraBarPersist alreadyPlotted(false);

if (alreadyPlotted = false) then begin

TLID = TL_New( Date[3], Time[3], High[3], Date, Time, High[3] ) ;
TL_SetExtRight( TLID, true ) ;
TL_SetExtLeft( TLID, true ) ;
TL_SetBegin (TLID, Time[3], High[3], High[3]);
TL_SetEnd (TLID, Time[3], High[3], High[3]);

alreadyPlotted = true;

end;
......................That code still produces the wrong bar to draw a trendline one.

ABCTG · May 19th, 2015, 04:33 PM

You placed the the location update inside the check that is only executed once to draw the trendline. Also compare the start and end point used for drawing the trendline with what you are using for the location update.

Regards,
ABCTG

kidvic

Still not working as I've updated the code with your help:

vars: TLID (High[3]), IntraBarPersist alreadyPlotted(false);

if (alreadyPlotted = false) then begin

TLID = TL_New( Date[3], Time[3], High[3], Date, Time, High[3] ) ;
TL_SetExtRight( TLID, true ) ;
TL_SetExtLeft( TLID, true ) ;
TL_SetBegin (TLID, Time[3], High[3], High[3]);
TL_SetEnd (TLID, Time[3], High[3], High[3]);

alreadyPlotted = true;

end;
......................That code still produces the wrong bar to draw a trendline one.

May 19th, 2015, 04:42 PM

ABCTG

You placed the the location update inside the check that is only executed once to draw the trendline. Also compare the start and end point used for drawing the trendline with what you are using for the location update.

Regards,
ABCTG

Not following what you mean.
The location is the high of 3 candles ago, I've referenced it many times so that it knows the candle i'm talking about.

Jura · May 20th, 2015, 12:03 AM

kidvic

Not following what you mean.
The location is the high of 3 candles ago, I've referenced it many times so that it knows the candle i'm talking about.

As I understand it, ABCTG means that you shouldn't put the location update in the code block that's only executed once (i.e., when `alreadyPlotted` is false). That probably makes sense when you think about it.

If you want to update the trend line on the close of each bar (for example), you can do as follows:

Code

Variables: 
  TLID (High[3]), 
  IntraBarPersist alreadyPlotted(false);

// Only draw the trend line once when
// `alreadyPlotted` is false
if (alreadyPlotted = false) then begin

  TLID = TL_New( Date[3], Time[3], High[3], Date, Time, High[3] ) ;
  TL_SetExtRight( TLID, true ) ;
  TL_SetExtLeft( TLID, true ) ;

  alreadyPlotted = true;

end;

// Then update the location of the trend line on
// the close of each bar
if (BarStatus(1) = 2) then begin

  TL_SetBegin (TLID, Time[3], High[3], High[3]);
  TL_SetEnd (TLID, Time[3], High[3], High[3]);

end;

But if I make a suggestion Kidvic, perhaps it's wise to rethink what you're actually want to make. Because the code we're helping you now with has little to do with your question that started this thread.

May 20th, 2015, 02:08 AM

Jura

As I understand it, ABCTG means that you shouldn't put the location update in the code block that's only executed once (i.e., when `alreadyPlotted` is false). That probably makes sense when you think about it.

If you want to update the trend line on the close of each bar (for example), you can do as follows:

Code

Variables: 
  TLID (High[3]), 
  IntraBarPersist alreadyPlotted(false);

// Only draw the trend line once when
// `alreadyPlotted` is false
if (alreadyPlotted = false) then begin

  TLID = TL_New( Date[3], Time[3], High[3], Date, Time, High[3] ) ;
  TL_SetExtRight( TLID, true ) ;
  TL_SetExtLeft( TLID, true ) ;

  alreadyPlotted = true;

end;

// Then update the location of the trend line on
// the close of each bar
if (BarStatus(1) = 2) then begin

  TL_SetBegin (TLID, Time[3], High[3], High[3]);
  TL_SetEnd (TLID, Time[3], High[3], High[3]);

end;

But if I make a suggestion Kidvic, perhaps it's wise to rethink what you're actually want to make. Because the code we're helping you now with has little to do with your question that started this thread.

Jura, the HighestALL function was resolved when you suggested the tl_new and extensions to left, and right. The example you saw was so you can see what I mean when I meant a HORIZONTAL line. (the condition was an example that created the horizontal line)
This last script you posted worked perfect alone, however when I introduced it to my script I ran into a few problems.

I think the best way to go about it now is to maybe actually call a barNumber. I have tried but I failed.
I have used the MaxBarsBack function, but I think I might be using it wrong. Also, I see a function called LastBarOnChart, but as I'm a noob programmer, I might be interpreting the syntax wrong.
I thought I might use (LastBarOnChart - 3) but that doesn't seem to work either.
I continue to try different ways, but It doesn't seem to work.

Jura · May 21st, 2015, 01:08 PM

kidvic

This last script you posted worked perfect alone, however when I introduced it to my script I ran into a few problems.

I think the best way to go about it now is to maybe actually call a barNumber. I have tried but I failed.
I have used the MaxBarsBack function, but I think I might be using it wrong. Also, I see a function called LastBarOnChart, but as I'm a noob programmer, I might be interpreting the syntax wrong.
I thought I might use (LastBarOnChart - 3) but that doesn't seem to work either.
I continue to try different ways, but It doesn't seem to work.

Can you clarify what you're trying to achieve now? It's not very clear to me, sorry. Why would you like the use the bar number for example?

May 22nd, 2015, 12:15 AM

Jura

Can you clarify what you're trying to achieve now? It's not very clear to me, sorry. Why would you like the use the bar number for example?

Because as I've introduced the Above code into my script And it's really really slow. Also removing the trendline to the left does not remove it. Using current bar Plots a trend line on that bar.

Jura · May 22nd, 2015, 05:16 AM

kidvic

Because as I've introduced the Above code into my script And it's really really slow. Also removing the trendline to the left does not remove it. Using current bar Plots a trend line on that bar.

Could you post the code that you are using now? Then we can take a look at it. If it's proprietary, can you create a code example that replicates this problematic behaviour?

May 22nd, 2015, 06:48 AM

Jura

Could you post the code that you are using now? Then we can take a look at it. If it's proprietary, can you create a code example that replicates this problematic behaviour?

Code

Var: TL_ID(-1);
if (CurrentBar = 10)
 then begin
 TL_ID = TL_New(Date, Time, High, Date, Time, Low);
end;
if (CurrentBar = 11)
 then begin
 TL_SetEnd(TL_ID, Date, Time, Low);
end;

Currentbar draws at bar 10 from left to right, how about from right to left?

Jura · May 22nd, 2015, 07:24 AM

kidvic

Code

Var: TL_ID(-1);
if (CurrentBar = 10)
 then begin
 TL_ID = TL_New(Date, Time, High, Date, Time, Low);
end;
if (CurrentBar = 11)
 then begin
 TL_SetEnd(TL_ID, Date, Time, Low);
end;

Currentbar draws at bar 10 from left to right, how about from right to left?

Can you expand more on what the trend line drawn from right to left needs to do? Is that right-to-left trend line still drawn on the same bars and price coordinates? Or should that line be drawn on future, yet to form price bars? If so, how should that trend line be updated; extended further into the future or remain in place?

Btw, your current code draws a trend line on historical data and then extends it once on the next bar. Is that what you want it to do? I'm asking because this is something else than I understood from your previous posts in this thread, so there might be a misunderstanding here.

PS: a screenshot with your goal will probably speak more than words.

need help with a plot in EasyLanguage with knowledge of ThinkScript

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need help with a plot in EasyLanguage with knowledge of ThinkScript