Description Usage Arguments Value Examples
Fit the Gompertz growth model to date: 'y = ylo + d*exp(-exp(((k*exp(1))/d)*(lambda-x)+1))'
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x |
A vector of linear values, usually time. |
y |
A vector of measured values in response to x. |
data |
A dataframe with x and y. |
k |
The estimate for maximal growth rate. |
ylo |
The estimate for the lowest value of y. |
d |
The estimate for the difference between the lowest and highest values of y. |
lambda |
The estimate for the growth lag, in units of the x scale. |
weigh |
When TRUE, weighted regression by 1/y^2. Default is FALSE. |
nls
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