[R] How can I extract information from list which class is nls

Schatzi adele_thompson at cargill.com
Tue Apr 26 20:21:49 CEST 2011

How do I extract the standard error of the parameter estimates?

Also, if I would like to add two parameters together (x+y), can I use this
equation to calculate the new standard error?:
x = parameter 1
y = parameter 2
xSE = SE parameter 1
ySE = SE parameter 2


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