EMA and SMA formula error

[Magda]

Just tried my hand to write an indicator / formula. Unfortunately it is not showing on a forex chart. Any suggestions towards solution would be highly appreciated.

Indicator: Moving Average 200E - Moving Average 200S

var study = new MAStudy(1, 0, "Close", MAStudy.EXPONENTIAL);
var study = new MAStudy(1, 0, "Close", MAStudy.SIMPLE);


function preMain()

{
setPriceStudy(true);
setStudyTitle("EMA-SMA200");
setCursorLabelName("SEMA-SMA200",0);
setDefaultBarFgColor(Color.red,0);
setPlotType(PLOTTYPE_LINE,0);
setDefaultBarThickness(1,0);

}

function main() {

return(ema(200) - sma(200));
}

Many thanks in advance,
Magda

[ACM]

Re: EMA and SMA formula error

Magda
First of all you do not need the first two lines of code in your script ie
var study = new MAStudy(1, 0, "Close", MAStudy.EXPONENTIAL);
var study = new MAStudy(1, 0, "Close", MAStudy.SIMPLE);
since you are not using those functions. This is because you are calling the EFS2 functions for those studies directly in the return statement ie
return(ema(200) - sma(200));
Secondly make sure that you have at least 200 bars of data loaded in the chart else you will not see a plot. Those studies require a minimum of 200 bars before they begin plotting. As far as I can see at my end the study is working.
Lastly you may want to set that formula as a non-priice study rather than a price study. To do that either remove the statement
setPriceStudy(true);
or change it to
setPriceStudy(false);
Hope this helps
Alex

Originally posted by Magda
Just tried my hand to write an indicator / formula. Unfortunately it is not showing on a forex chart. Any suggestions towards solution would be highly appreciated.

Indicator: Moving Average 200E - Moving Average 200S

var study = new MAStudy(1, 0, "Close", MAStudy.EXPONENTIAL);
var study = new MAStudy(1, 0, "Close", MAStudy.SIMPLE);


function preMain()

{
setPriceStudy(true);
setStudyTitle("EMA-SMA200");
setCursorLabelName("SEMA-SMA200",0);
setDefaultBarFgColor(Color.red,0);
setPlotType(PLOTTYPE_LINE,0);
setDefaultBarThickness(1,0);

}

function main() {

return(ema(200) - sma(200));
}

Many thanks in advance,
Magda

[Magda]

Re: Re: EMA and SMA formula error

Hi Alex,

Thanks for your kind response. I affected the changes you suggested and it works fine now.

Thanks a lot for your kindness I have more hope now that I will be able to write other formulas.

Best regards,
Magda

Originally posted by Alexis C. Montenegro
Magda
First of all you do not need the first two lines of code in your script ie
var study = new MAStudy(1, 0, "Close", MAStudy.EXPONENTIAL);
var study = new MAStudy(1, 0, "Close", MAStudy.SIMPLE);
since you are not using those functions. This is because you are calling the EFS2 functions for those studies directly in the return statement ie
return(ema(200) - sma(200));
Secondly make sure that you have at least 200 bars of data loaded in the chart else you will not see a plot. Those studies require a minimum of 200 bars before they begin plotting. As far as I can see at my end the study is working.
Lastly you may want to set that formula as a non-priice study rather than a price study. To do that either remove the statement
setPriceStudy(true);
or change it to
setPriceStudy(false);
Hope this helps
Alex

[ACM]

Magda
You are most welcome and thank you for letting me know it is working fine now
Alex