growthcurver: Simple Metrics to Summarize Growth Curves

Fits the logistic equation to microbial growth curve data (e.g., repeated absorbance measurements taken from a plate reader over time). From this fit, a variety of metrics are provided, including the maximum growth rate, the doubling time, the carrying capacity, the area under the logistic curve, and the time to the inflection point. Method described in Sprouffske and Wagner (2016) <doi:10.1186/s12859-016-1016-7>.

Version: 0.3.1
Depends: R (≥ 4.0)
Imports: minpack.lm (≥ 1.2), stats (≥ 4.0), graphics (≥ 4.0), grDevices (≥ 4.0)
Suggests: testthat, knitr, dplyr, ggplot2, rmarkdown
Published: 2020-10-19
Author: Kathleen Sprouffske [aut, cre]
Maintainer: Kathleen Sprouffske <sprouffske at>
License: GPL-2 | GPL-3 [expanded from: GPL (≥ 2)]
NeedsCompilation: no
Materials: README
CRAN checks: growthcurver results


Reference manual: growthcurver.pdf
Vignettes: Using growthcurver
Package source: growthcurver_0.3.1.tar.gz
Windows binaries: r-devel:, r-release:, r-oldrel:
macOS binaries: r-release (arm64): growthcurver_0.3.1.tgz, r-release (x86_64): growthcurver_0.3.1.tgz, r-oldrel: growthcurver_0.3.1.tgz
Old sources: growthcurver archive


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