Round values in .js script - Vuforia Studio

[TimmRo]

Hello, everybody,

I'm stuck on what is probably a simple function.

I want to round an internal parameter to two decimal places in Vuforia Studio, but I don't know how.
The option to assign a filter directly to the widget is not an option for me, because I assign the widget text in a function in the .js file.

Here is a small excerpt:

The following parameters should be rounded to two decimal places:

• $scope.app.params.EMpro_W1
• $scope.app.params.EMpro_W2
• $scope.app.params.EMpro_W3

The internal parameters are assigned a value from the ThingWorx Composer with the data type #Number.

-----
If there is no possibility here, do you know how I can round a value in the ThingWorx Composer with a subscription ?

I would be very pleased about any help!
Thanks a lot!

[RolandRaytchev]

Hi @TimmRo ,

one possible way to do this is to use the JavaScript toFixed() method which will round to the number what you specify as argument:

...
 $scope.app.params['eyepos'] ="eyepos=("+fargs.position[0].toFixed(2)+","+fargs.position[1].toFixed(2)+","+fargs.position[2].toFixed(2)+")";
...

If you parameter is a string you can use the Number() to convert it as string then "fix" the number of the dec places

 ...
 $scope.app.params['TEST'] ="VALUE WITH ONE DEC PLACE="+Number($scope.app.params['TESTSTRINGNUMBER']).toFixed(1);
console.log($scope.app.params['TEST'])
...

[TimmRo · Accepted solution]

I have solved the problem by rounding the values in PTC Composer based on a subscription.

var Wert = me.EMpro_Wert2
me.EMpro_Wert2 = Wert.toFixed(2);