What methods are used to CONFIRM the compisition of a star from spectral lines?

[Tokage]

So I know that we can use absorption or emission lines from a star or object emitting light to determine the composition of that object. But what methods are used to confirm that? We've been doing this in class and it seems rather primitive to eyeball the lines and compare them with example lines of where exactly and how exactly lines representing certain elements should look and making the determination of whether or not they look similar enough to say that object is the same. Is there no other process to go through that would plug in the spectrum gotten to something to make sure and account for human error in just comparing to spectrum side by side?

Hopefully someone understands what I'm trying to say. Thank guys.

 

[LostConjugate]

Exactly. A spectrometer and a computer is more efficient.