{ "_id": "6a327a383efcd9bda4389cbc", "Package": "sftrack", "Title": "Modern Classes for Tracking and Movement Data", "Version": "0.5.5", "Date": "2026-05-17", "Authors@R": "c(\nperson(given = \"Matthew\",\nfamily = \"Boone\",\nrole = \"aut\",\nemail = \"mttboone@gmail.com\",\ncomment = c(ORCID = \"0000-0002-8070-4715\")),\nperson(given = \"Rocío\",\nfamily = \"Joo\",\nrole = \"aut\",\nemail = \"rocio.joo@globalfishingwatch.org\",\ncomment = c(ORCID = \"0000-0003-0319-4210\")),\nperson(given = \"Mathieu\",\nfamily = \"Basille\",\nrole = c(\"aut\", \"cre\"),\nemail = \"mathieu@basille.org\",\ncomment = c(ORCID = \"0000-0001-9366-7127\")))", "Description": "Modern classes for tracking and movement data, building on\n'sf' spatial infrastructure, and early theoretical work from\nTurchin (1998, ISBN: 9780878938476), and Calenge et al. (2009)\n. Tracking data are series of\nlocations with at least 2-dimensional spatial coordinates\n(x,y), a time index (t), and individual identification (id) of\nthe object being monitored; movement data are made of\ntrajectories, i.e. the line representation of the path,\ncomposed by steps (the straight-line segments connecting\nsuccessive locations). 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