dydt.exponential: Return the derivative of the exponential function

In embryogrowth: Tools to Analyze the Thermal Reaction Norm of Embryo Growth

Return the derivative of the exponential function

Description

Return the derivative of the exponential function
dydt.exponential(t, size, parms)

Usage

dydt.exponential(t, size, parms)

Arguments

t	The time in any unit
size	The current size
parms	A vector with alpha and K values being c(alpha=x1, K=x2). K is not used.

Details

dydt.exponential returns the derivative of the exponential function.

Value

A list with the derivative

Author(s)

Marc Girondot

Examples

## Not run: 
library(embryogrowth)
data(nest)
formated <- FormatNests(nest)
# The initial parameters value can be:
# "T12H", "DHA",  "DHH", "Rho25"
# Or
# "T12L", "DT", "DHA",  "DHH", "DHL", "Rho25"
x <- structure(c(306.174998729436, 333.708348843241,  
	299.856306141849, 149.046870203155),  
	.Names = c("DHA", "DHH", "T12H", "Rho25"))
# K or rK are not used for dydt.linear or dydt.exponential
resultNest_4p_exponential <- searchR(parameters=x, fixed.parameters=NULL,  
	temperatures=formated, derivate=dydt.exponential, M0=1.7,  
	hatchling.metric=c(Mean=39.33, SD=1.92))

## End(Not run)

embryogrowth documentation built on Sept. 11, 2024, 8:16 p.m.