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

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Duane Bozarth

Posts: 298
Registered: 1/25/05
Re: finding values from data-points
Posted: Nov 25, 2005 10:29 AM
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"S. Gatzka" wrote:
> Hello.
> I am seeking a solution to find specific values from data-points.
> 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 which 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...

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