How can I extract a gaussian function out of a spectrum which has five gaussain functions....

I have a spectrum which has five gaussian functions. but I have to extract this Gaussian functions from the spectrum. There are diferent gaussian functions. What are the possible methods for extracting the gauss functions using labview. I have attached a picture to give you a picture. The solid line is the one I have and the dotted lines are the individual Gaussian function which will be extracted.
Note: the Gaussian function center number and width are known.
Attachments:
Picture1.png ‏27 KB

Let me get this straight.
You have:
   The experimental data set (spectrum)
   The number of Gaussian curves you want to use for your curve fit
   The center positions and variances for all of your Gaussians
You need:
   The height of the Gaussian curves
Is that it? If so, all you need to do is set up an optimizing routine, using some measure to optimize (i.e., sum of abs(residuals) or residuals squared for each data point) and the acceptable final error for your solution.
A modified Simplex routine should work well, there may be others which would be more efficient, but you're talking about a trivial amount of comkputer time unless you have a gazillion of these spectra to fit.
If that is not your problem, please describe exactly what data you have and what you need to calculate more fully.
LabVIEW can use essentially any method for solving this problem that any other computer language can, but it is not likely to be a simple canned plug-in (at least it won't be one which you get in the vanilla version of LabVIEW), you'll have to put it together yourself.
Cameron
To err is human, but to really foul it up requires a computer.
The optimist believes we are in the best of all possible worlds - the pessimist fears this is true.
Profanity is the one language all programmers know best.
An expert is someone who has made all the possible mistakes.
To learn something about LabVIEW at no extra cost, work the online LabVIEW tutorial(s):
LabVIEW Unit 1 - Getting Started
Learn to Use LabVIEW with MyDAQ

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