{
  "_id": "6ae326243d0f299392dd0ff5",
  "Package": "lgpr",
  "Title": "Longitudinal Gaussian Process Regression",
  "Version": "1.2.5",
  "Authors@R": "c(person(given = \"Juho\",\nfamily = \"Timonen\",\nrole = c(\"aut\", \"cre\"),\nemail = \"juho.timonen@iki.fi\",\ncomment = c(ORCID = \"0000-0003-2341-6765\")\n),\nperson(given = \"Andrew\",\nfamily = \"Johnson\",\nrole = c(\"ctb\")\n)\n)",
  "Description": "Interpretable nonparametric modeling of longitudinal data\nusing additive Gaussian process regression. Contains\nfunctionality for inferring covariate effects and assessing\ncovariate relevances. Models are specified using a convenient\nformula syntax, and can include shared, group-specific,\nnon-stationary, heterogeneous and temporally uncertain effects.\nBayesian inference for model parameters is performed using\n'Stan'. The modeling approach and methods are described in\ndetail in Timonen et al. (2021)\n<doi:10.1093/bioinformatics/btab021>.",
  "License": "GPL (>= 3)",
  "Encoding": "UTF-8",
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  "URL": "https://github.com/jtimonen/lgpr",
  "BugReports": "https://github.com/jtimonen/lgpr/issues",
  "VignetteBuilder": "knitr",
  "Packaged": {
    "Date": "2026-10-29 10:42:03 UTC",
    "User": "root"
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  "Author": "Juho Timonen [aut, cre] (ORCID:\n<https://orcid.org/0000-0003-2341-6765>), Andrew Johnson [ctb]",
  "Maintainer": "Juho Timonen <juho.timonen@iki.fi>",
  "Config/pak/sysreqs": "make",
  "Repository": "https://cran.r-universe.dev",
  "Date/Publication": "2025-10-31 02:15:14 UTC",
  "RemoteUrl": "https://github.com/cran/lgpr",
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  "_created": "2026-10-29T10:42:03.000Z",
  "_published": "2026-10-29T10:55:32.079Z",
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    "add_dis_age",
    "add_factor",
    "add_factor_crossing",
    "adjusted_c_hat",
    "bet",
    "clear_postproc",
    "component_info",
    "component_names",
    "contains_postproc",
    "covariate_info",
    "create_model",
    "draw_pred",
    "fit_summary",
    "gam",
    "get_draws",
    "get_model",
    "get_pred",
    "get_stanfit",
    "igam",
    "is_f_sampled",
    "lgp",
    "log_normal",
    "model_summary",
    "new_x",
    "normal",
    "num_components",
    "num_evalpoints",
    "num_paramsets",
    "optimize_model",
    "param_summary",
    "parameter_info",
    "plot",
    "plot_beta",
    "plot_components",
    "plot_data",
    "plot_draws",
    "plot_effect_times",
    "plot_f",
    "plot_pred",
    "plot_sim",
    "plot_warp",
    "postproc",
    "ppc",
    "pred",
    "prior_pred",
    "read_proteomics_data",
    "relevances",
    "sample_model",
    "sample_param_prior",
    "select",
    "select_freq",
    "select_freq.integrate",
    "select.integrate",
    "show",
    "simulate_data",
    "split_by_factor",
    "split_data",
    "split_random",
    "split_within_factor",
    "split_within_factor_random",
    "student_t",
    "uniform"
  ],
  "_datasets": [
    {
      "name": "testdata_001",
      "title": "A very small artificial test data, used mostly for unit tests",
      "object": "testdata_001",
      "class": [
        "data.frame"
      ],
      "fields": [
        "id",
        "age",
        "dis_age",
        "blood",
        "sex",
        "y"
      ],
      "rows": 24,
      "table": true,
      "tojson": true
    },
    {
      "name": "testdata_002",
      "title": "Medium-size artificial test data, used mostly for tutorials",
      "object": "testdata_002",
      "class": [
        "data.frame"
      ],
      "fields": [
        "id",
        "age",
        "diseaseAge",
        "sex",
        "y",
        "group"
      ],
      "rows": 96,
      "table": true,
      "tojson": true
    }
  ],
  "_help": [
    {
      "page": "lgpr-package",
      "title": "The 'lgpr' package.",
      "topics": [
        "lgpr-package",
        "lgpr"
      ]
    },
    {
      "page": "add_dis_age",
      "title": "Easily add the disease-related age variable to a data frame",
      "concept": [
        "data frame handling functions"
      ],
      "topics": [
        "add_dis_age"
      ]
    },
    {
      "page": "add_factor",
      "title": "Easily add a categorical covariate to a data frame",
      "concept": [
        "data frame handling functions"
      ],
      "topics": [
        "add_factor"
      ]
    },
    {
      "page": "add_factor_crossing",
      "title": "Add a crossing of two factors to a data frame",
      "concept": [
        "data frame handling functions"
      ],
      "topics": [
        "add_factor_crossing"
      ]
    },
    {
      "page": "adjusted_c_hat",
      "title": "Set the GP mean vector, taking TMM or other normalization into account",
      "concept": [
        "data frame handling functions"
      ],
      "topics": [
        "adjusted_c_hat"
      ]
    },
    {
      "page": "apply_scaling",
      "title": "Apply variable scaling",
      "concept": [
        "variable scaling functions"
      ],
      "topics": [
        "apply_scaling"
      ]
    },
    {
      "page": "as_character",
      "title": "Character representations of different formula objects",
      "topics": [
        "as.character,lgpexpr-method",
        "as.character,lgpformula-method",
        "as.character,lgpterm-method",
        "as_character"
      ]
    },
    {
      "page": "create_model",
      "title": "Create a model",
      "concept": [
        "main functions"
      ],
      "topics": [
        "create_model"
      ]
    },
    {
      "page": "create_model.covs_and_comps",
      "title": "Parse the covariates and model components from given data and formula",
      "concept": [
        "internal model creation functions"
      ],
      "topics": [
        "create_model.covs_and_comps"
      ]
    },
    {
      "page": "create_model.formula",
      "title": "Create a model formula",
      "concept": [
        "internal model creation functions"
      ],
      "topics": [
        "create_model.formula"
      ]
    },
    {
      "page": "create_model.likelihood",
      "title": "Parse the response variable and its likelihood model",
      "concept": [
        "internal model creation functions"
      ],
      "topics": [
        "create_model.likelihood"
      ]
    },
    {
      "page": "create_model.options",
      "title": "Parse the given modeling options",
      "topics": [
        "create_model.options"
      ]
    },
    {
      "page": "create_model.prior",
      "title": "Parse given prior",
      "concept": [
        "internal model creation functions"
      ],
      "topics": [
        "create_model.prior"
      ]
    },
    {
      "page": "create_plot_df",
      "title": "Helper function for plots",
      "topics": [
        "create_plot_df"
      ]
    },
    {
      "page": "create_scaling",
      "title": "Create a standardizing transform",
      "concept": [
        "variable scaling functions"
      ],
      "topics": [
        "create_scaling"
      ]
    },
    {
      "page": "dinvgamma_stanlike",
      "title": "Density and quantile functions of the inverse gamma distribution",
      "concept": [
        "functions related to the inverse-gamma distribution"
      ],
      "topics": [
        "dinvgamma_stanlike",
        "qinvgamma_stanlike"
      ]
    },
    {
      "page": "draw_pred",
      "title": "Draw pseudo-observations from posterior or prior predictive distribution",
      "concept": [
        "main functions"
      ],
      "topics": [
        "draw_pred"
      ]
    },
    {
      "page": "example_fit",
      "title": "Quick way to create an example lgpfit, useful for debugging",
      "topics": [
        "example_fit"
      ]
    },
    {
      "page": "fit_summary",
      "title": "Print a fit summary.",
      "topics": [
        "fit_summary"
      ]
    },
    {
      "page": "GaussianPrediction-class",
      "title": "An S4 class to represent analytically computed predictive distributions (conditional on hyperparameters) of an additive GP model",
      "topics": [
        "component_names,GaussianPrediction-method",
        "GaussianPrediction",
        "GaussianPrediction-class",
        "num_components,GaussianPrediction-method",
        "num_evalpoints,GaussianPrediction-method",
        "num_paramsets,GaussianPrediction-method",
        "show,GaussianPrediction-method"
      ]
    },
    {
      "page": "get_draws",
      "title": "Extract parameter draws from lgpfit or stanfit",
      "concept": [
        "main functions"
      ],
      "topics": [
        "get_draws"
      ]
    },
    {
      "page": "get_pred",
      "title": "Extract model predictions and function posteriors",
      "topics": [
        "get_pred"
      ]
    },
    {
      "page": "kernel",
      "title": "Compute a kernel matrix (covariance matrix)",
      "topics": [
        "kernel",
        "kernel_beta",
        "kernel_bin",
        "kernel_cat",
        "kernel_eq",
        "kernel_ns",
        "kernel_varmask",
        "kernel_zerosum"
      ]
    },
    {
      "page": "KernelComputer-class",
      "title": "An S4 class to represent input for kernel matrix computations",
      "topics": [
        "component_names,KernelComputer-method",
        "KernelComputer",
        "KernelComputer-class",
        "num_components,KernelComputer-method",
        "num_evalpoints,KernelComputer-method",
        "num_paramsets,KernelComputer-method",
        "show,KernelComputer-method"
      ]
    },
    {
      "page": "lgp",
      "title": "Main function of the 'lgpr' package",
      "concept": [
        "main functions"
      ],
      "topics": [
        "lgp"
      ]
    },
    {
      "page": "lgpexpr-class",
      "title": "An S4 class to represent an lgp expression",
      "topics": [
        "lgpexpr",
        "lgpexpr-class"
      ]
    },
    {
      "page": "lgpfit-class",
      "title": "An S4 class to represent the output of the 'lgp' function",
      "topics": [
        "clear_postproc,lgpfit-method",
        "component_names,lgpfit-method",
        "contains_postproc,lgpfit-method",
        "get_model,lgpfit-method",
        "get_stanfit,lgpfit-method",
        "is_f_sampled,lgpfit-method",
        "lgpfit",
        "lgpfit-class",
        "num_components,lgpfit-method",
        "plot,lgpfit,missing-method",
        "postproc,lgpfit-method",
        "show,lgpfit-method"
      ]
    },
    {
      "page": "lgpformula-class",
      "title": "An S4 class to represent an lgp formula",
      "topics": [
        "lgpformula",
        "lgpformula-class"
      ]
    },
    {
      "page": "lgpmodel-class",
      "title": "An S4 class to represent an additive GP model",
      "topics": [
        "component_info,lgpmodel-method",
        "component_names,lgpmodel-method",
        "covariate_info,lgpmodel-method",
        "is_f_sampled,lgpmodel-method",
        "lgpmodel",
        "lgpmodel-class",
        "num_components,lgpmodel-method",
        "parameter_info,lgpmodel-method",
        "show,lgpmodel-method"
      ]
    },
    {
      "page": "lgprhs-class",
      "title": "An S4 class to represent the right-hand side of an lgp formula",
      "topics": [
        "lgprhs",
        "lgprhs-class"
      ]
    },
    {
      "page": "lgpscaling-class",
      "title": "An S4 class to represent variable scaling",
      "topics": [
        "lgpscaling",
        "lgpscaling-class"
      ]
    },
    {
      "page": "lgpsim-class",
      "title": "An S4 class to represent a data set simulated using the additive GP formalism",
      "topics": [
        "lgpsim",
        "lgpsim-class",
        "plot,lgpsim,missing-method",
        "show,lgpsim-method"
      ]
    },
    {
      "page": "lgpterm-class",
      "title": "An S4 class to represent one formula term",
      "topics": [
        "lgpterm",
        "lgpterm-class"
      ]
    },
    {
      "page": "model_summary",
      "title": "Print a model summary.",
      "topics": [
        "model_summary",
        "param_summary"
      ]
    },
    {
      "page": "new_x",
      "title": "Create test input points for prediction",
      "concept": [
        "data frame handling functions"
      ],
      "topics": [
        "new_x"
      ]
    },
    {
      "page": "operations",
      "title": "Operations on formula terms and expressions",
      "topics": [
        "*,lgpterm,lgpterm-method",
        "+,lgprhs,lgprhs-method",
        "+,lgprhs,lgpterm-method",
        "+,lgpterm,lgpterm-method",
        "operations"
      ]
    },
    {
      "page": "plot_api_c",
      "title": "Plot a generated/fit model component",
      "concept": [
        "internal plot API functions"
      ],
      "topics": [
        "plot_api_c"
      ]
    },
    {
      "page": "plot_api_g",
      "title": "Plot longitudinal data and/or model fit so that each subject/group has their own panel",
      "concept": [
        "internal plot API functions"
      ],
      "topics": [
        "plot_api_g"
      ]
    },
    {
      "page": "plot_components",
      "title": "Visualize all model components",
      "concept": [
        "main plot functions"
      ],
      "topics": [
        "plot_components"
      ]
    },
    {
      "page": "plot_data",
      "title": "Vizualizing longitudinal data",
      "concept": [
        "data frame handling"
      ],
      "topics": [
        "plot_data"
      ]
    },
    {
      "page": "plot_draws",
      "title": "Visualize the distribution of parameter draws",
      "concept": [
        "main plot functions"
      ],
      "topics": [
        "plot_beta",
        "plot_draws",
        "plot_effect_times",
        "plot_warp"
      ]
    },
    {
      "page": "plot_inputwarp",
      "title": "Visualize input warping function with several steepness parameter values",
      "topics": [
        "plot_inputwarp"
      ]
    },
    {
      "page": "plot_invgamma",
      "title": "Plot the inverse gamma-distribution pdf",
      "concept": [
        "functions related to the inverse-gamma distribution"
      ],
      "topics": [
        "plot_invgamma"
      ]
    },
    {
      "page": "plot_pred",
      "title": "Visualizing model predictions or inferred covariate effects",
      "concept": [
        "main plot functions"
      ],
      "topics": [
        "plot_f",
        "plot_pred"
      ]
    },
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