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DegreeDayCalc

DegreeDayCalc is an R package that provides an interactive Shiny application for calculating insect phenology using degree-day (thermal time) models.
It allows users to explore developmental progression across life stages (egg, larval/nymphal instars, pupa, adult, and preoviposition) using multiple degree-day calculation methods.

The package is designed for entomologists, ecologists, agronomists, and pest management researchers interested in modeling temperature-driven development.

Features

• Interactive Shiny application
• Multiple degree-day calculation methods:
  • Average
  • Average (cut)
  • Triangular
  • Triangular with upper threshold
  • Sine
  • Sine with upper threshold
• Flexible life-stage definitions:
  • Egg
  • Larva 1-6 or Nymph 1-6 (user selectable)
  • Pupa
  • Adult
  • Preoviposition
• Upload daily temperature data (CSV or Excel)
• Automatic assignment of developmental stages
• Visualization of cumulative degree-days and stage transitions
• Downloadable results table (CSV) and figure (PNG)

Installation

install.packages("DegreeDayCalc")

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.