cut off to 2 or 3 decimals

[mstar]

I'd like to know how to take a price (let's say a MA calculated) and round the number to 2 or 3 decimals.

Since, the MA will have more decimals, I need a function to drop the extra decimals but not make it an integer of course...

45.3258922 => 45.33

thanks

[gspiker]

Dion posted a nice solution to this a while ago:

function rnd(value) { // Round the price to two digits
value *= 100;
return Math.round(value, 2)/100;
}

Just put this at the start of your efs file (not in Main() or PreMain()).

You could then do:

nResult = Math.round(nMyMA);

And nResult will be nMyMA rounded to two places.

G

[DionLoy]

Slight correction, the line to do the rounding should read:

nResult = rnd(nMyMA); 

[gspiker]

Ooops. Yep. Thanks for catching that.

[mstar]

thanks

thanks guys,
I did caught the problem..

works like a charm

[dynastore]

This one rounds to N digits:

function rnd(value, N)
{ // Round the price to N digits
var n;
var mult = 1;
for (n=0; n<N; n++) mult*=10;
value*=mult;
return Math.round(value, N)/mult;
}

[dloomis]

round up to the nearest 0.25

rUP = ma-ma%0.25+0.25

rDn = ma-ma%0.25

[Doji3333]

truncating decimals..

Here is a code segment that I use to truncate decimal values..

Let's say your indicators returns a value like...

35.975847564785667843

and you only want it to report back

35.9758

This is the code. It creates a "TEXT LABEL" that can be placed on the chart or in the cursor window. It DOES NOT ROUND. It simply truncates the value.

vSUM is your assumed indicator value.

       var i;
       var DecLength = 4;  // number of decimals to include

       var Multiplier = 10;
         for (i=1;i<DecLength ;i++) {
          Multiplier = Multiplier *10;
         }

       var TextvSUM = ""+(Math.floor(vSUM))+".";
       var Fraction = ""+(Math.floor((vSUM-Math.floor(vSUM))*Multiplier ));

     //  fill in additional leading ZEROs (if necessary).
       if (Fraction.length < DecLength ) {
         for (i=1;i<=(DecLength -Fraction.length);i++) {
          TextvSUM += "0";
         }
       } 
       TextvSUM += Fraction; 

TextvSUM now returns your TEXT value of your truncated indicator (or price).