High - low

[ideaman]

Hi Alexis:

I need a simple indicator and if I get another "syntax error" I'm going to put my
fist thru the drywall.

I would like the (high - low) / 0.25 and plotted as a histogam.

Could you help?

TIA,

dom

[ACM]

dom
The script enclosed below should do it
Alex

function preMain(){
    setPriceStudy(false);
    setStudyTitle("example");
    setPlotType(PLOTTYPE_HISTOGRAM);
}

function main(){

    return (high(0) - low(0)) / 0.25;
} 

[ideaman]

Yes!! That's it! Excellent.

If Could I impose upon you just a little more. I just thought of this. Could you have the histogram bars turn green if the result is equal to or greater than 12 and red if not?

Thanks a million Alexis.

dom

Originally posted by Alexis C. Montenegro
dom
The script enclosed below should do it
Alex

function preMain(){
    setPriceStudy(false);
    setStudyTitle("example");
    setPlotType(PLOTTYPE_HISTOGRAM);
}

function main(){

    return (high(0) - low(0)) / 0.25;
} 

[ACM]

dom
Modify the efs in the following way. Instead of using the expression (high(0)-low(0))/0.25 directly in the return statement create it as a variable inside main ie

var vDiff = (high(0)-low(0))/0.25;

Then use vDiff for your condition ie

if(vDiff >= your number)
insert here the command to be executed

At this point in your return statement replace the original expression with vDiff
Give it a try and if you have a problem post what you have done
Alex

[ideaman]

This didn't work:

function preMain(){

setPriceStudy(false);

setStudyTitle("Andy's eminibar");

setPlotType(PLOTTYPE_HISTOGRAM);

}



function main(){

var vDiff = (high(0)-low(0))/0.25;

if(vdiff >= 12) {
setplottype(plottype_histogram, color.green);

}

if(vdiff < 12) {

setplottype(plottype_histogram, color.red);

}


I tried to find what's the format for "if"
and knowledgebase or glossary didn't have it. It sure would be nice if I could just type "if(" or what ever I type and it shows the required format needed.

I even typed "colors" and get a bunch of
of other things. I sure wish Esignal was as easy as Amibroker.

dom

[ACM]

dom
The command you need is setBarFgColor() and would be used as follows.

if(vDiff>=12){
setBarFgColor(Color.green);
}else{
setBarFgColor(Color.red);
}

For a complete list of all the functions see the EFS Function Reference and the EFS2 Function Reference in the EFS KnowledgeBase. In the KB you may also want to go through the Help Guides and in particular the Guide to Developing eSignal Indicators
Alex

[ideaman]

Hi Alexis:

I've got no syntax errors with this:

function preMain(){

setPriceStudy(false);

setStudyTitle("Andy's Emini");

setPlotType(PLOTTYPE_HISTOGRAM);

}



function main(){

var vDiff = (high(0)-low(0))/0.25;

if(vDiff >= 12) {
setBarFgColor(Color.green);
} else {
setBarFgColor(Color.red);
}

}


The only problem is no histogram is plotted. Although the cursor window is changing colors. Shouldn't the plottype
histogram above plotted the bars?

dom

[ACM]

dom
You forgot to include the return statement in your script. As I suggested in an earlier reply you would return vDiff in place of the original expression
Alex

[ideaman]

That did it!

I cancelled my order for the drugs and alchohol.

Thanks for your patience.

dom

[ACM]

dom
You are most welcome
Alex