Issues

• PySD - Stella graphical function arrays not supported

  SDXorg/pysd#486 · Filter by author cday41 opened on May 27, 2026
  6

• PySD Bug Report: Wildcard Subscript [*] Not Parsed in XMILE/SMILE Equations

  SDXorg/pysd#485 · Filter by author sylvan-s opened on May 24, 2026
  4

• Component substitution with subscripts doesn't appear to honour coordinate labels in the xarray DataArray

  SDXorg/pysd#484 · Filter by author oulenz opened on May 21, 2026
  1

• Data variables with child subscripts fail to parse

  SDXorg/pysd#478 · Filter by author ali-akhavan89 opened on Oct 14, 2025

• No support for XMILE models with multiple array dimensions?

  bugxmile
  SDXorg/pysd#473 · Filter by author Steve-Yang-Sys opened on Jul 23, 2025
  9

• Macro dependencies are not properly solved

  SDXorg/pysd#449 · Filter by author enekomartinmartinez opened on Jul 9, 2024

• Vensims GET DATA XXX functions missing

  python buildervensim
  SDXorg/pysd#448 · Filter by author enekomartinmartinez opened on Jul 9, 2024

• Missing Vensim function LOOKUP AREA

  python buildervensim
  SDXorg/pysd#421 · Filter by author rogersamso opened on Jul 19, 2023
  1

• Multidimensional LOOKUP variables not supported

  bugpython buildervensimwontfix
  SDXorg/pysd#406 · Filter by author rogersamso opened on Apr 6, 2023

• ValueError is raised when delay_time argument in DelayFixed has dimensions

  bugpython buildervensim
  SDXorg/pysd#401 · Filter by author rogersamso opened on Jan 17, 2023
  5

• XMILE Submodel Support

  SDXorg/pysd#386 · Filter by author easyas314159 opened on Nov 15, 2022
  1

• Add support for more Noise Functions

  python buildervensim
  SDXorg/pysd#370 · Filter by author akuptel opened on Sep 29, 2022
  1

• Improve memory allocation of integration step

  performance
  SDXorg/pysd#342 · Filter by author enekomartinmartinez opened on Jul 1, 2022

• Extend support for GET TIME VALUE

  partially implementedvensim
  SDXorg/pysd#332 · Filter by author enekomartinmartinez opened on Jun 2, 2022
  3

• Parallelize the initialization of external data

  performance
  SDXorg/pysd#331 · Filter by author enekomartinmartinez opened on Jun 2, 2022

• Improve memory allocation inside model functions

  performance
  SDXorg/pysd#329 · Filter by author enekomartinmartinez opened on Jun 2, 2022
  1

• Move py_backend from xarray to numpy

  performance
  SDXorg/pysd#328 · Filter by author enekomartinmartinez opened on Jun 2, 2022
  

• Add support for VECTOR ELM MAP

  vensim
  SDXorg/pysd#320 · Filter by author enekomartinmartinez opened on May 23, 2022
  1

• Allow parallelization of translation for large Vensim models

  performance
  SDXorg/pysd#293 · Filter by author enekomartinmartinez opened on Sep 13, 2021

• Missing test for xmile integrations may cause future bugs

  contributions are welcomexmile
  SDXorg/pysd#280 · Filter by author enekomartinmartinez opened on Jul 6, 2021
  1

• xmile is not support conveyors

  contributions are welcomeenhancementxmile
  SDXorg/pysd#215 · Filter by author alexprey opened on Apr 9, 2020

• add "Delay Material"

  enhancementvensim
  SDXorg/pysd#207 · Filter by author JamesPHoughton opened on May 29, 2019
  2

• read_xmile issue with equations over multiple lines

  bugxmile
  SDXorg/pysd#205 · Filter by author peterhovmand opened on Jan 24, 2019

• Enforced (Stella Style?) Limits and Warning (Vensim Style) Limits

  enhancement
  SDXorg/pysd#194 · Filter by author gherka opened on Aug 28, 2018
  5

• Other LOOKUP functions are not implemented in pysd

  vensim
  SDXorg/pysd#175 · Filter by author AndreRamos7 opened on Dec 27, 2017
  2