Future Data Error in TS Indicator

[blib 10]

Below is the code for a simple indicator that tests for momentum high/low based on a moving average oscillator reading. The idea is to return a value/plot/alert if the criteria is true (i.e. the oscillator is at its highest/lowest point in 30 bars). The caveat is to disqualify points that are the highest while the momentum is still rising and vice versa, hence the test to see if it's higher/lower than the subsequent data point. I thought that I took care of the issue by first nesting the whole check withing "lastbaronchart=false" condition, however I still get "Tried to reference future data" error. Please help

 

inputs: shortMA(3), longMA(10);

vars: FastOsc(0), MomHigh(false), MomLow(false);

 

if lastbaronchart=false then begin

 

FastOsc=averagefc(c,shortMA)-averagefc(c,longMA);

 

 

if FastOsc=highest(fastosc,30) and

fastosc>fastosc[-1] then begin

plot1(fastosc,"mom high");

MomHigh=true;

alert("Momentum High");

end;

 

if FastOsc=lowest(fastosc,30) and

fastosc<fastosc[-1] then begin

plot2(fastosc,"mom low");

MomLow=true;

alert("Momentum High");

end;

end;

[sevensa 10]

Your issue are these two lines:

 

fastosc>fastosc[-1] then begin

 

fastosc<fastosc[-1] then begin

 

The should be:

 

fastosc>fastosc[1] then begin

 

fastosc<fastosc[1] then begin

 

You cannot use negative values to reference the past bars/values. Today's value is fastosc[0], yesterday's is fastosc[1], two days ago is fastosc[2], etc. Tomorrow's bar theoretically would be fastosc[-1] and that is why you get the error.

[blib 10]

Sevensa,

The idea behind using [-1] is to prevent the indicator from giving a false true signal if the full momentum high or low has not yet been put in. In other words, I need to check the subsequent bar to see if it's higher/lower and give signal ONLY if it isn't. Any idea on how to accomplish that?

[Tams 20]

search for "zigzag"

I have posted the code here on TL.

you can see how it is done.

[blib 10]

I don't see any code under zigzag posted you you - if you have it, do you mind reposting it or post the URL - thanks

[sevensa 10]

Sevensa,

The idea behind using [-1] is to prevent the indicator from giving a false true signal if the full momentum high or low has not yet been put in. In other words, I need to check the subsequent bar to see if it's higher/lower and give signal ONLY if it isn't. Any idea on how to accomplish that?

 

Nope, sorry. Looking into the future is not something I have figured out how to do yet.

[BlowFish 10]

Sevensa,

The idea behind using [-1] is to prevent the indicator from giving a false true signal if the full momentum high or low has not yet been put in. In other words, I need to check the subsequent bar to see if it's higher/lower and give signal ONLY if it isn't. Any idea on how to accomplish that?

 

You need to shift all your logic backwards by 1 bar. So [-1] becomes [0] --- [0] becomes [1] etc. You will need to shift the plot backwards too.