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cff-version: 1.2.0
message: 'To cite package "sddr" in publications use:'
type: software
license: MIT
title: 'sddr: Spatial Distribution Dynamics'
version: 0.1.1.9000
doi: 10.32614/CRAN.package.sddr
abstract: 'A tidy toolkit for distribution dynamics: analysing how a cross-sectional
  distribution of values evolves over time and where it settles in the long run. Provides
  discrete-time, spatial, rank and local indicator of spatial association (''LISA'')
  Markov transition estimation, ergodic analysis (steady-state, mean first passage
  and sojourn times), rank-mobility measures (Kendall''s tau and the Theta statistic)
  and Markov mobility indices. Methods use long-format ''id''/''time''/''value'' data
  rather than transition matrices and build on the distribution-dynamics literature
  (Quah (1993); Rey (2001) <https://doi.org/10.1111/j.1538-4632.2001.tb00444.x>).
  Results are validated for numerical parity against the reference ''giddy'' library.'
authors:
- family-names: Farooqi
  given-names: Muhammad
  email: mqfarooqi@gmail.com
  orcid: https://orcid.org/0000-0003-4918-9791
repository: https://mqfarooqi1.r-universe.dev
repository-code: https://github.com/mqfarooqi1/sddr
commit: fb060f78ff64180107e6340938a5bace93076137
url: https://github.com/mqfarooqi1/sddr
date-released: '2026-07-20'
contact:
- family-names: Farooqi
  given-names: Muhammad
  email: mqfarooqi@gmail.com
  orcid: https://orcid.org/0000-0003-4918-9791