View source: R/gompertz_analysis.R
GP | R Documentation |
The logistical models provide Gompertz modified logistical models. This model was extracted from the 'drc' package.
GP(
trat,
resp,
npar = "g2",
sample.curve = 1000,
ylab = "Dependent",
xlab = "Independent",
theme = theme_classic(),
legend.position = "top",
r2 = "all",
ic = FALSE,
fill.ic = "gray70",
alpha.ic = 0.5,
error = "SE",
point = "all",
width.bar = NA,
scale = "none",
textsize = 12,
pointsize = 4.5,
linesize = 0.8,
linetype = 1,
pointshape = 21,
fillshape = "gray",
colorline = "black",
round = NA,
xname.formula = "x",
yname.formula = "y",
comment = NA,
fontfamily = "sans"
)
trat |
Numeric vector with dependent variable. |
resp |
Numeric vector with independent variable. |
npar |
Number os parameters (g2, g3 or g4) |
sample.curve |
Provide the number of observations to simulate curvature (default is 1000) |
ylab |
Variable response name (Accepts the expression() function) |
xlab |
treatments name (Accepts the expression() function) |
theme |
ggplot2 theme (default is theme_bw()) |
legend.position |
legend position (default is "top") |
r2 |
coefficient of determination of the mean or all values (default is all) |
ic |
Add interval of confidence |
fill.ic |
Color interval of confidence |
alpha.ic |
confidence interval transparency level |
error |
Error bar (It can be SE - default, SD or FALSE) |
point |
defines whether you want to plot all points ("all") or only the mean ("mean") |
width.bar |
Bar width |
scale |
Sets x scale (default is none, can be "log") |
textsize |
Font size |
pointsize |
shape size |
linesize |
line size |
linetype |
line type |
pointshape |
format point (default is 21) |
fillshape |
Fill shape |
colorline |
Color lines |
round |
round equation |
xname.formula |
Name of x in the equation |
yname.formula |
Name of y in the equation |
comment |
Add text after equation |
fontfamily |
Font family |
The two-parameter Gompertz model is given by the function:
y = exp^{-exp^{b(x-e)}}
The three-parameter Gompertz model is given by the function:
y = d \times exp^{-exp^{b(x-e)}}
The four-parameter Gompertz model is given by the function:
y = c + (d-c)(exp^{-exp^{b(x-e)}})
The function returns a list containing the coefficients and their respective values of p; statistical parameters such as AIC, BIC, pseudo-R2, RMSE (root mean square error); largest and smallest estimated value and the graph using ggplot2 with the equation automatically.
Model imported from the drc package (Ritz et al., 2016)
Gabriel Danilo Shimizu
Leandro Simoes Azeredo Goncalves
Seber, G. A. F. and Wild, C. J (1989) Nonlinear Regression, New York: Wiley and Sons (p. 330).
Ritz, C.; Strebig, J.C. and Ritz, M.C. Package ‘drc’. Creative Commons: Mountain View, CA, USA, 2016.
LL, CD, BC
library(AgroReg)
data("aristolochia")
attach(aristolochia)
GP(trat,resp, npar="g3")
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.