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cran / devRate

:exclamation: This is a read-only mirror of the CRAN R package repository. devRate — Quantify the Relationship Between Development Rate and Temperature in Ectotherms. Homepage: https://github.com/frareb/devRate/ Report bugs for this package: https://github.com/frareb/devRate/issues
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Error with nonlinear models #1

Open mpmontanal opened 1 year ago

mpmontanal commented 1 year ago

Hi, I am trying to adjust my empirical data to the nonlinear models, I have tried to use the initial values for each model of close species and averages as indicated in the package guides. I have also used my data as vectors and as data frames. However, in all cases I have obtained the errors below:

bri1_egg <- devRateModel( eq = briere1_99, temp = temp, devRate = devRate, startValues = list(aa = 1.12, Tmin = 0.021, Tmax = 32.29))

  • Error in numericDeriv(form[[3L]], names(ind), env, central = nDcentral) : Missing value or an infinity produced when evaluating the model

bri1_egg <- devRateModel( eq = briere1_99, dfData = larvae, startValues = list(aa = 0.85, Tmin = 9, Tmax = 37))

  • Error in stats::nls(formula = eq[[1]], data = data.frame(rT = devRate, : parameters without starting value in 'data': rT

lactin1_95 <- devRateModel( eq = lactin2_95, temp = temp, devRate = devRate, startValues = list( aa = 0.03, Tmax = 30, deltaT = 5.0, bb = -1.5))

  • Error in stats::nls(formula = eq[[1]], data = data.frame(rT = devRate, : singular gradient

taylor_egg <- devRateModel(eq = taylor_81, temp = temp, devRate = devRate, startValues = list(Rm = 0.05, Tm = 30, To = 5))

  • Error in stats::nls(formula = eq[[1]], data = data.frame(rT = devRate, : singular gradient

I would appreciate if you could guide me in possible solutions

gaborcsardi commented 1 year ago

Hi, this is a read only mirror of CRAN, please see the package authors in the DESCRIPTION file. Look for Maintainer, BugReports and URL. Thanks!