pub fn wtloss() -> Result<DataFrame, PolarsError>Expand description
§Weight Loss Data from an Obese Patient
§Description:
The data frame gives the weight, in kilograms, of an obese patient at 52 time points over an 8 month period of a weight rehabilitation programme.
§Usage:
wtloss
§Format:
This data frame contains the following columns:
- ‘Days’ time in days since the start of the programme.
- ‘Weight’ weight in kilograms of the patient.
§Source:
Dr T. Davies, Adelaide.
§References:
Venables, W. N. and Ripley, B. D. (2002) Modern Applied Statistics with S. Fourth edition. Springer.
§Examples:
## IGNORE_RDIFF_BEGIN
wtloss.fm <- nls(Weight ~ b0 + b1*2^(-Days/th),
data = wtloss, start = list(b0=90, b1=95, th=120))
wtloss.fm
## IGNORE_RDIFF_END
plot(wtloss)
with(wtloss, lines(Days, fitted(wtloss.fm)))