Two Things

[jsaitch]

I have attached a simple break out EFS and was wondering how I might do the following two things.

Is it possible to have the price of the lines on the chart to tell me what price was broken? eg if new high achieved and bar turns blue at what price is this and can the chart display this for every bar?

Secondly if I wanted to back test this what code do I need to have to buy on stop the breakout once and then reverse on the next break out?


Thanks for anyone who helps.


James

[eSignal_JasonK]

Re: Two Things

Hello James,

Originally posted by jsaitch
I have attached a simple break out EFS and was wondering how I might do the following two things.

Is it possible to have the price of the lines on the chart to tell me what price was broken? eg if new high achieved and bar turns blue at what price is this and can the chart display this for every bar?

The price of the lines you are plotting appear in the cursor window. If you want to draw some text on the chart to also display that price, you could use the drawText() function. Call this drawing function inside your onAction functions and pass the Highs.getValue(-1) or Lows.getValue(-1) value for the text parameter. Use the AboveBar#/BelowBar# location constants for the location parameter.

Secondly if I wanted to back test this what code do I need to have to buy on stop the breakout once and then reverse on the next break out?


Thanks for anyone who helps.


James

To learn how to write a stop and reverse back testing formula, check out the Stop and Reverse example in section 2.1 from Back Testing Tutorial 2. You would apply nearly the same logic outlined in that example, but use your Highs and Lows series with the conditions from your formula.

[jsaitch]

Is it possible to have the text (price) appear on the chart to show values of previos break outs?

I will review tutorial thanks.


James

[jsaitch]

I tried this

function onAction1() {
setPriceBarColor(Color.red);
drawText( low(), AboveBar1, Color.red)
vLastAlert - 1;

this results in data seried being printed on chart, I tried Highs.getValue(-1) and it says Highs not defined.

Sorry to be pain


James

[Guest]

James,

low() is a series, as is high(). I believe you should be using either low(0) or low(-1) for the present and last low values respectfully. A similar format for the high values woukld be high(0) or high(-1).

hope this helps...

Originally posted by jsaitch
I tried this

function onAction1() {
setPriceBarColor(Color.red);
drawText( low(), AboveBar1, Color.red)
vLastAlert - 1;

this results in data seried being printed on chart, I tried Highs.getValue(-1) and it says Highs not defined.

Sorry to be pain


James

[jsaitch]

low(-1) works but Lows or Highs.getValue(-1) doesn't it says Lows or Highs not defined ?

I must be missing something


James

[Guest]

Hi James,

Please take a look at the modified file for the modifications.

Most significant in your example is the difference between a series object, which constitutes a set of data representing all of the information loaded on the chart to that point, and a numerical value which is just one of the series object values.

examples of series objects are low(), high(), Highs and Lows.

examples of specific numerical valuers are low(0), high(0), Highs.getValue(0) and Lows.getValue(0).

Series objects should not be returned to a chart in the return statement, numbers should

Some of the changes in the code below are cosmetic changes, but others are required to ensure the code is functional. check out the output in the formula output window, you will see the difference in the data types.

var vLastAlert = -1;


function preMain() {
 setPriceStudy(true);
 setStudyTitle("Trade Breakout");
 setColorPriceBars(true);
 setDefaultPriceBarColor(Color.RGB(0,0,0));
 setCursorLabelName("HStop", 0);
 setCursorLabelName("LStop", 1);
 setDefaultBarFgColor(Color.blue , 0) ;
 setDefaultBarFgColor(Color.red , 1) ;
 setDefaultBarThickness(2, 0) ;
 setDefaultBarThickness(2, 1) ;
 setPlotType(PLOTTYPE_FLATLINES,0);
 setPlotType(PLOTTYPE_FLATLINES,1);

 
 var f1 = new FunctionParameter("TightStop", FunctionParameter.NUMBER);  
 f1.setDefault(5); 
}

var bInit=false;
var Highs;
var Lows;

function main(TightStop) {
 if(!bInit){
  Highs = highest(TightStop,high());
  Lows = lowest(TightStop,low());
  bInit=true;
  debugPrintln("32: "+typeof(Highs));
  debugPrintln("33: "+typeof(Highs.getValue(0)));
  debugPrintln("34: "+typeof(high()));
  debugPrintln("35: "+typeof(high(0)));
 }

  
 if(open(-1) >= Lows.getValue(-1) && low(-1) < Lows.getValue(-1))
 {
  onAction1();
 }
 
 else if(open(-1 <= Highs.getValue(-1) && high(-1) > Highs.getValue(-1)){
  onAction2();
 }
 
 return new Array(Highs.getValue(0),Lows.getValue(0));
}
  
function onAction1() {
 setPriceBarColor(Color.red);
 vLastAlert = 1;
}

function onAction2() {
 setPriceBarColor(Color.blue);
 vLastAlert = 2;
}