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An excellent utility, I am having little trouble in running the following.

I have two vectors of 360 elements each.

First vector is y which contains the pixel number from 1-360

the second vector is c, it contains the values for the y vector.

the aim is to fit a function similar to this

y=a(1-exp(b*c))

I am more interested in the a coefficient. However i am getting the following error.

ezfit(y,c,'y=a*(1-exp(-b*c)') ??? Error using ==> ezfit at 549 Fit: error during the fminsearch procedure

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