Spatial Transcriptomics Distance Calculation and Visualization R package STDistance version 0.6.8 Analysis of spatial relationships between cell types in spatial transcriptomics data. Spatial proximity is a critical factor in cell-cell communication. The package calculates nearest neighbor distances between specified cell types and provides visualization tools to explore spatial patterns. Applications include studying cell-cell interactions, immune microenvironment characterization, and spatial organization of tissues. Software Depends: R (>= 4.0.0) Imports: dplyr, ggplot2, Hmisc, scales, stats, RColorBrewer, tidyr, Suggests: testthat, knitr, rmarkdown Zixiang Wang <wangzixiang@sdu.edu.cn> Comprehensive R Archive Network (CRAN) Zixiang Wang [aut, cre] (ORCID: <https://orcid.org/0000-0001-5252-9764>), Lei Yang [aut], Zhaojian Liu [aut] GPL (>= 3) 2026-06-21 application/tgz https://CRAN.R-project.org/package=STDistance doi:10.32614/CRAN.package.STDistance