{ "_id": "6ad1eb8529625c14e47af060", "Package": "gmsp", "Title": "Ground Motion Signal Processing", "Version": "0.7.1", "Authors@R": "person(\"Alejandro\", \"Verri Kozlowski\", , \"averri@fi.uba.ar\",\nrole = c(\"aut\", \"cre\", \"cph\"),\ncomment = c(ORCID = \"0000-0002-8535-1170\"))", "Description": "Implements short-time Fourier transform (STFT) based\nprocessing of strong-motion time series: time-grid\nregularisation, STFT-window and anti-alias-resampling strategy\nselection, edge tapering, and frequency-domain integration and\ndifferentiation, mapping a single input (acceleration,\nvelocity, or displacement) to a consistent triplet under a\nchosen analysis bandwidth. Also provides\nintrinsic-mode-function decomposition via empirical mode\ndecomposition (EMD), ensemble EMD (EEMD), and variational mode\ndecomposition (VMD) with optional band-rule filtering; elastic\nsingle-degree-of-freedom (SDOF) domain-normalised acceleration,\nvelocity, and displacement response spectra from their\ncorresponding time-series domains by exact state-space\nintegration; intensity measures including peak,\nroot-mean-square (RMS), Arias intensity, significant-duration,\ncumulative absolute velocity, mean period, and the derived\nindices earthquake destructiveness potential (EPI) and\npower-of-input (PDI); and D50 and D100 horizontal response\nspectra. Methods: Huang et al. (1998)\n, Wu and Huang (2009)\n, Dragomiretskiy and Zosso\n(2014) , Boore (2010)\n. An optional indexing layer parses\nprovider files in formats including 'PEER' 'NGA-West2' 'AT2',\n'CESMD' 'V2'/'V2c', 'NWZ' 'V2A', Geological Survey of Canada\n'TR', 'IGP'/'UCR' 'AC' variants, and generic two-column ASCII\ntext, normalises components, writes per-record CSV\n(comma-separated values) and JSON (JavaScript Object Notation)\npairs, and computes per-record intensity tables.", "License": "MIT + file LICENSE", "Encoding": "UTF-8", "Language": "en-US", "URL": "https://averriK.github.io/gmsp/", "VignetteBuilder": "knitr", "Config/testthat/edition": "3", "Config/roxygen2/version": "8.0.0", "NeedsCompilation": "no", "Packaged": { "Date": "2026-10-16 08:15:20 UTC", "User": "root" }, "Author": "Alejandro Verri Kozlowski [aut, cre, cph] (ORCID:\n)", "Maintainer": "Alejandro Verri Kozlowski ", "Config/pak/sysreqs": "libicu-dev libsndfile1-dev libssl-dev", "Repository": "https://averrik.r-universe.dev", "Date/Publication": "2026-07-18 16:40:02 UTC", "RemoteUrl": 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