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  "Title": "Handling and Managing Peptide Spectrum Matches",
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  "Description": "The PSMatch package helps proteomics practitioners to\nload, handle and manage Peptide Spectrum Matches. It provides\nfunctions to model peptide-protein relations as adjacency\nmatrices and connected components, visualise these as graphs\nand make informed decision about shared peptide filtering. The\npackage also provides functions to calculate and visualise MS2\nfragment ions.",
  "License": "Artistic-2.0",
  "Encoding": "UTF-8",
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  "BugReports": "https://github.com/RforMassSpectrometry/PSM/issues",
  "URL": "https://github.com/RforMassSpectrometry/PSM",
  "biocViews": "Infrastructure, Proteomics, MassSpectrometry",
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  "Repository": "https://rformassspectrometry.r-universe.dev",
  "Date/Publication": "2026-05-20 15:56:30 UTC",
  "RemoteUrl": "https://github.com/rformassspectrometry/psmatch",
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  "Packaged": {
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    "User": "root"
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  "Author": "Laurent Gatto [aut, cre] (ORCID:\n<https://orcid.org/0000-0002-1520-2268>),\nJohannes Rainer [aut] (ORCID: <https://orcid.org/0000-0002-6977-7147>),\nSebastian Gibb [aut] (ORCID: <https://orcid.org/0000-0001-7406-4443>),\nSamuel Wieczorek [ctb],\nThomas Burger [ctb],\nGuillaume Deflandre [ctb] (ORCID:\n<https://orcid.org/0009-0008-1257-2416>)",
  "Maintainer": "Laurent Gatto <laurent.gatto@uclouvain.be>",
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    "ccMatrix",
    "connectedComponents",
    "ConnectedComponents",
    "defaultNeutralLoss",
    "describePeptides",
    "describeProteins",
    "dims",
    "filterPsmDecoy",
    "filterPsmFdr",
    "filterPsmRank",
    "filterPSMs",
    "filterPsmShared",
    "getAminoAcids",
    "getAtomicMass",
    "labelFragments",
    "makeAdjacencyMatrix",
    "makePeptideProteinVector",
    "ncols",
    "nrows",
    "plotAdjacencyMatrix",
    "plotSpectraPTM",
    "prioritiseConnectedComponents",
    "prioritizeConnectedComponents",
    "PSM",
    "psmVariables",
    "readPSMs",
    "reduced",
    "reduced<-",
    "reducePSMs"
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      "page": "adjacencyMatrix",
      "title": "Convert to/from an adjacency matrix.",
      "topics": [
        "adjacencyMatrix",
        "makeAdjacencyMatrix",
        "makePeptideProteinVector",
        "plotAdjacencyMatrix"
      ]
    },
    {
      "page": "calculateFragments",
      "title": "Calculate ions produced by fragmentation with variable modifications",
      "topics": [
        "calculateFragments",
        "calculateFragments,character,missing-method",
        "defaultNeutralLoss",
        "modificationPositions"
      ]
    },
    {
      "page": "ConnectedComponents",
      "title": "Connected components",
      "topics": [
        "adjacencyMatrix,ConnectedComponents",
        "adjacencyMatrix,ConnectedComponents-method",
        "ccMatrix",
        "ConnectedComponents",
        "connectedComponents",
        "ConnectedComponents-class",
        "dims,ConnectedComponents",
        "dims,ConnectedComponents-method",
        "length,ConnectedComponents",
        "length,ConnectedComponents-method",
        "ncols,ConnectedComponents",
        "ncols,ConnectedComponents-method",
        "nrows,ConnectedComponents",
        "nrows,ConnectedComponents-method",
        "prioritiseConnectedComponents",
        "prioritizeConnectedComponents",
        "show,ConnectedComponents",
        "[,ConnectedComponents,integer,ANY,ANY",
        "[,ConnectedComponents,integer,ANY,ANY-method",
        "[,ConnectedComponents,logical,ANY,ANY",
        "[,ConnectedComponents,logical,ANY,ANY-method",
        "[,ConnectedComponents,numeric,ANY,ANY",
        "[,ConnectedComponents,numeric,ANY,ANY-method"
      ]
    },
    {
      "page": "describeProteins",
      "title": "Describe protein and peptide compositions",
      "topics": [
        "describePeptides",
        "describeProteins"
      ]
    },
    {
      "page": "filterPSMs",
      "title": "Filter out unreliable PSMs.",
      "topics": [
        "filterPsmDecoy",
        "filterPsmFdr",
        "filterPsmRank",
        "filterPSMs",
        "filterPsmShared"
      ]
    },
    {
      "page": "getAminoAcids",
      "title": "Amino acids",
      "topics": [
        "getAminoAcids"
      ]
    },
    {
      "page": "getAtomicMass",
      "title": "Atomic mass.",
      "topics": [
        "getAtomicMass"
      ]
    },
    {
      "page": "labelFragments",
      "title": "labels MS2 Fragments",
      "topics": [
        "labelFragments"
      ]
    },
    {
      "page": "plotSpectraPTM",
      "title": "Function to plot MS/MS spectra with PTMs",
      "topics": [
        "plotSpectraPTM"
      ]
    },
    {
      "page": "PSM",
      "title": "A class for peptide-spectrum matches",
      "topics": [
        "adjacencyMatrix,PSM-method",
        "PSM",
        "PSM,character",
        "PSM,data.frame",
        "PSM,PSM",
        "PSM-class",
        "psmVariables",
        "readPSMs",
        "reduced",
        "reduced<-",
        "reducePSMs"
      ]
    },
    {
      "page": "PSMatch",
      "title": "PSMatch: Handling and Managing Peptide Spectrum Matches",
      "topics": [
        "PSMatch-package",
        "PSMatch"
      ]
    }
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