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Topic: finding values from data-points
Replies: 2   Last Post: Nov 26, 2005 11:34 AM

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S. Gatzka

Posts: 29
Registered: 5/7/05
Re: finding values from data-points
Posted: Nov 26, 2005 11:34 AM
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Duane Bozarth wrote:
> "S. Gatzka" wrote:

>> Hello.
>> I am seeking a solution to find specific values from

>> Here's the situation:
>> I have two workspace-outputs from simulink.
>> Say, x and t, where t is the simulation time.
>> In most of the cases I have to find the time t_whatever on

> x
>> reaches a specific value.
>> How can that be managed?
>> I have tried using SOLVE, but I think it does work only for
>> 'functions', but I have no idee how to tell MATLAB, that x

> depends on
>> t, x(t) ...
>> So, anyone can help me?

> iiuc, sounds like you just need to interpolate for t based on the x
> value. A linear or polynomial fit to the data evaluated w/ the
> independent and dependent variables reversed would do the trick...

So I do a fit with curve-fitting-toolbox, but then what?
How can I access the function within MATLAB?

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