Displaying 2 results from an estimated 2 matches for "radka".
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radke
2008 Apr 25
5
Non-linear system of equations
Hello R users,
I am trying to estimate the parameters of a bimodal normal distribution using moments matching, so I have to solve a non-linear system of equations. How can I solve the following simple example?
x^2 - y^2 = 6
x ? y = 3
I heard about nlsystemfit, but I don?t know how to run it exactly. I have tried the following code, but it doesn?t really work:
f1 <-y~ x[1]^2-x[2]^2-6
f2
2007 Feb 25
1
nested design in lme, need help with specifying model
...e+00
Alright, I get the among species differences, but I am confused here with the very low StdDev of Replicate as a random effect, since I know f.ex. from a plot, that it is relatively high. Which leads me to thinking, that something is wrong here.
I'd appreciate any hints and suggestions.
Radka
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