Hello All,
i would fit my data with a function like this :
y = a0 + a1 * exp(-x/a2) + a3 * exp(-x/a4) + a5 * exp(-x/a6) + a7 *
exp(-x/a8) + a9 * exp(-x/a10)
plus i have to impose that
a1 + a3 + a5 + a7 + a9 = 1
a1 , a3 , a5 , a7 , a9 >= 0
i try with nls, but i do not know how to impose the "normalization"
restrain of the coefficient.
How i can do it with R ?
thanks a lot
max
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