How to Truncate an Average Reading Using Scripts

[NManteufel]

In my Javascript script, I am trying to truncate an average to three decimal points, but

Math.floor(average*1000)/1000;

is not working.

How can I truncate "average" to three decimal points?

[attila]

Hi @NManteufel

This should work if average is a number.

[NManteufel]

It's not working. This is the full example, I am using the GPIO to switch a relay (HE3621A0500) and the scope to read the signal.

StaticIO.Channel0.DIO[0].text = "1"; // VDD_2V9 CONNECTED
wait(1)  // Allow to stabilize
Scope.single();
if(!Scope.wait()) throw "Stopped";
var average = 0;
var data = Scope.Channel1.data;
data.forEach(function(sample){average += sample;})
average /= data.length;
Math.floor(average * 1000) / 1000;
print("VDD_2V9\t\t\tP4\t\t"+average+" V");
StaticIO.Channel0.DIO[0].text = "0"; // VDD_2V9 DISCONNECTED

 

Edited September 17 by NManteufel

[attila]

The truncated values is not use or assigned to anything.
To print it: 
print("VDD_2V9\t\t\tP4\t\t"+(floor(average * 1000) / 1000)+" V");

[NManteufel]

Thanks, that solved my problem.