NEWS.md

In sdbuildR: Easily Build, Simulate, and Visualise Stock-and-Flow Models

sdbuildR 1.0.8

Minor improvements and bug fixes

• Fixed bug in replacing scientifically formatted numbers
• Fixed bug in comparing Julia versions
• Added alias "sigmoid" for logistic function
• Created constructor and validator for class sdbuildR_sim to improve consistency in output

sdbuildR 1.0.7

sdbuildR 1.0.6

• Fixed error in finding Julia installation

• Simulations in Julia are now ensured to stop at exact simulation times, which removes unexpected results created by numerical errors in the solver (using tstops argument in solve())

sdbuildR 1.0.5

sdbuildR 1.0.4

sdbuildR 1.0.3

• Removed automatic installation of Julia packages and instead wrote a separate function for this: install_julia_env(). install_julia_env() is called in .onLoad() ONLY if the custom environmental variable AUTO_INSTALL_JULIA_ENV is "true" and NOT_CRAN is "true". This is to ensure GitHub workflows have the Julia environment instantiated, but this will not affect users, as they do not have AUTO_INSTALL_JULIA_ENV.

• Added vignette for formalizing Job Demands-Resources (JDR) Theory

• Improved documentation

sdbuildR 1.0.2

sdbuildR 1.0.1

sdbuildR 1.0.0

• Added extensive solver options
• Created Julia package (SystemDynamicsBuildR.jl) to contain sdbuildR Julia code
• Added vignette for support in installing and setting up Julia
• Added obligatory argument times to step, pulse, ramp, and seasonal

sdbuildR documentation built on Nov. 19, 2025, 5:07 p.m.