How do you extract data from a specific array?
Hi folks!
Any idea how I can extract the probability value from the following array?
I have a EEG headset and I am using node for max to extract some data from it. Here is the relevant js code:
let rightArmProbability;
neurosity.kinesis("rightArm").subscribe((intent) => {
rightArmProbability = intent.predictions;
maxApi.outlet("rightArmProbability", rightArmProbability);
});
And this is the data that is being outputted in the Max window. The attached image is what is being shown in the dict.view.
print: array:
label: rightArm
metric: kinesis
probability: 0.899373
timestamp: 1726055665222
type: training
label: rightArm
metric: kinesis
probability: 0.883797
timestamp: 1726055665347
type: training
label: rightArm
metric: kinesis
probability: 0.82849
timestamp: 1726055665472
type: training
label: rightArm
metric: kinesis
probability: 0.792538
timestamp: 1726055665597
type: training
I tried everything from array objects to dict objects to select object. No results.
Any suggestions on what I should do?
Thank you so much!

Your array ---> [array.iter] ---> [dict.unpack probability:]
Thank you, TFL!
BTW, I forgot to mention that the previous output is filtered with [route rightArmProbability]
So [node.script] -> [route rightArmProbability] and from here I put what you suggested.
Unfortunately I have no output. I see that dictionary u12120..2323 comes out of [route rightArmProbability] and goes to [array.iter] and then obj:dictionary:u8378237..3288 from there to [dict.unpack probability:]. But from there on there is no data
I will share the code, but I guess you might need the hardware as well.
JS Code attached in txt file.
And Max code:
Got it: the object you receive isn't an array but a dict with one key called array
, in which is the actual array.
So you need to add a [dict.unpack array:] between your [route] and [array.iter].
No need for the hardware, just need the data it outputs.
It works!!
Any idea on how to get all 4 probability values?
Anyway! Thank you so much!!
LE: I don't know if it is a but or not, but it seems it also works without the [array.iter]
And now I realize that I get all the 4 probability values. But I was curious on how to get them separately somehow to know which one is which.
Otherwise I might do a mean value calculation and work with that.
Just passed by here randomly and realized I missed your last question. In case you still look for an answer, the most straightforward one would be [array.foreach].
Thank you, TFL!!
Your previous answers helped a lot. Managed in the end.