{
  "_id": "6a5c841f9baadeef8ab50f87",
  "Package": "potentiomap",
  "Title": "Build Potentiometric Surfaces and Hydraulic-Gradient Arrows",
  "Version": "0.2.0",
  "Date": "2026-07-17",
  "Authors@R": "person(\"Elvin\", \"Cordero\", email = \"elvin.cordero@seamountgeo.com\",\nrole = c(\"aut\", \"cre\"),\ncomment = c(ORCID = \"0009-0003-8025-283X\"))",
  "Description": "Prepares groundwater-level observations from measured\nhydraulic head or from depth-to-water and land-surface\nelevation, interpolates potentiometric surfaces using\nthin-plate splines, inverse-distance weighting, ordinary\nKriging, universal Kriging, or user-supplied methods, and\ncreates raster, contour, diagnostic, support, and\nhydraulic-gradient products for review and export. Functions\nretain method conditions and fit diagnostics, validate explicit\nprediction tasks, inspect model-conditional uncertainty and\nmonitoring-network sensitivity, identify limited prediction\nsupport, and check whether scaled hydraulic-gradient arrows\nremain within finite raster support and end at lower modeled\nhead. Raster processing uses methods from 'terra' (Hijmans\n2025) <doi:10.32614/CRAN.package.terra>, thin-plate splines use\nmethods from 'fields' (Nychka et al. 2021)\n<doi:10.5065/D6W957CT>, and geostatistical interpolation uses\nmethods from 'gstat' (Pebesma 2004)\n<doi:10.1016/j.cageo.2004.03.012>.",
  "License": "GPL-3",
  "URL": "https://el-cordero.github.io/potentiomap/,\nhttps://github.com/el-cordero/potentiomap",
  "BugReports": "https://github.com/el-cordero/potentiomap/issues",
  "Encoding": "UTF-8",
  "Language": "en-US",
  "LazyData": "true",
  "Roxygen": "list(markdown = TRUE)",
  "RoxygenNote": "7.3.3",
  "VignetteBuilder": "knitr",
  "Config/testthat/edition": "3",
  "Config/Needs/website": "pkgdown",
  "Config/Needs/coverage": "covr",
  "Config/pak/sysreqs": "libabsl-dev cmake libgdal-dev gdal-bin libgeos-dev\nlibxml2-dev libssl-dev libproj-dev libsqlite3-dev\nlibudunits2-dev",
  "Repository": "https://el-cordero.r-universe.dev",
  "Date/Publication": "2026-07-18 00:59:34 UTC",
  "RemoteUrl": "https://github.com/el-cordero/potentiomap",
  "RemoteRef": "HEAD",
  "RemoteSha": "42851bfd7be99dc720da871339c6fe1b52242e48",
  "NeedsCompilation": "no",
  "Packaged": {
    "Date": "2026-07-19 07:55:15 UTC",
    "User": "root"
  },
  "Author": "Elvin Cordero [aut, cre] (ORCID:\n<https://orcid.org/0009-0003-8025-283X>)",
  "Maintainer": "Elvin Cordero <elvin.cordero@seamountgeo.com>",
  "_user": "el-cordero",
  "_type": "src",
  "_file": "potentiomap_0.2.0.tar.gz",
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  "_expires": "2026-10-27T08:00:29.000Z",
  "_created": "2026-07-19T07:55:15.000Z",
  "_published": "2026-07-19T08:00:31.603Z",
  "_jobs": [
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  "_upstream": "https://github.com/el-cordero/potentiomap",
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    "author": "Elvin <elvin.cordero@seamountgeo.com>",
    "committer": "Elvin <elvin.cordero@seamountgeo.com>",
    "message": "Fix CRAN vignette links and Kriging capitalization\n",
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  "_assets": [
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    "extra/citation.json",
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    "extra/contents.json",
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  "_homeurl": "https://github.com/el-cordero/potentiomap",
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      "date": "2026-05-29"
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  ],
  "_exports": [
    "ps_anisotropy",
    "ps_arrow_vertices",
    "ps_candidate_network",
    "ps_check_observations",
    "ps_compare_methods",
    "ps_compare_surfaces",
    "ps_contour_support",
    "ps_contour_uncertainty",
    "ps_contours",
    "ps_cross_section",
    "ps_depth_to_water_surface",
    "ps_diagnostics",
    "ps_export_contour_support",
    "ps_export_style",
    "ps_export_surfaces",
    "ps_flow_arrows",
    "ps_head_change",
    "ps_interpolate",
    "ps_interpolate_grouped",
    "ps_interpolate_regions",
    "ps_make_points",
    "ps_metadata",
    "ps_method_disagreement",
    "ps_network_thinning",
    "ps_potentiometric_points",
    "ps_prediction_support",
    "ps_quicklook",
    "ps_report",
    "ps_sample_aoi",
    "ps_screen_groups",
    "ps_select_event",
    "ps_smooth_surface",
    "ps_split_domain",
    "ps_surface_ensemble",
    "ps_surface_profile",
    "ps_surface_sensitivity",
    "ps_surface_uncertainty",
    "ps_surfaces",
    "ps_tune_interpolation",
    "ps_validate",
    "ps_validate_arrows",
    "ps_validation_plot",
    "ps_variogram",
    "ps_variogram_compare",
    "ps_vertical_gradient",
    "ps_well_influence"
  ],
  "_datasets": [
    {
      "name": "synthetic_anisotropic_points",
      "title": "Synthetic anisotropic head points",
      "object": "synthetic_anisotropic_points",
      "class": [
        "data.frame"
      ],
      "fields": [
        "point_id",
        "x",
        "y",
        "head",
        "crs",
        "generating_major_direction_degrees_clockwise_from_north"
      ],
      "rows": 45,
      "table": true,
      "tojson": true
    },
    {
      "name": "synthetic_candidate_sites",
      "title": "Synthetic candidate monitoring sites",
      "object": "synthetic_candidate_sites",
      "class": [
        "data.frame"
      ],
      "fields": [
        "candidate_id",
        "x",
        "y",
        "excluded",
        "cost",
        "user_score",
        "crs"
      ],
      "rows": 12,
      "table": true,
      "tojson": true
    },
    {
      "name": "synthetic_covariates",
      "title": "Synthetic surface shapes and hydrogeologic covariates",
      "object": "synthetic_covariates",
      "class": [
        "data.frame"
      ],
      "fields": [
        "x",
        "y",
        "land_surface",
        "valley_distance",
        "planar_head",
        "bowl_head",
        "saddle_head",
        "valley_head",
        "crs"
      ],
      "rows": 224,
      "table": true,
      "tojson": true
    },
    {
      "name": "synthetic_dem",
      "title": "Synthetic DEM raster",
      "object": "synthetic_dem",
      "class": [
        "PackedSpatRaster"
      ],
      "fields": [],
      "table": false,
      "tojson": false
    },
    {
      "name": "synthetic_events",
      "title": "Synthetic repeated groundwater-monitoring events",
      "object": "synthetic_events",
      "class": [
        "data.frame"
      ],
      "fields": [
        "well_id",
        "x",
        "y",
        "datetime",
        "event",
        "head",
        "quality",
        "unit",
        "vertical_datum",
        "water_bearing_unit"
      ],
      "rows": 36,
      "table": true,
      "tojson": true
    },
    {
      "name": "synthetic_nested_wells",
      "title": "Synthetic nested monitoring wells",
      "object": "synthetic_nested_wells",
      "class": [
        "data.frame"
      ],
      "fields": [
        "nest_id",
        "interval",
        "x",
        "y",
        "head",
        "representative_elevation",
        "screen_top",
        "screen_bottom",
        "unit",
        "vertical_datum"
      ],
      "rows": 16,
      "table": true,
      "tojson": true
    },
    {
      "name": "synthetic_regions",
      "title": "Two synthetic interpolation compartments",
      "object": "synthetic_regions",
      "class": [
        "data.frame"
      ],
      "fields": [
        "region_id",
        "xmin",
        "xmax",
        "ymin",
        "ymax",
        "wkt",
        "crs"
      ],
      "rows": 2,
      "table": true,
      "tojson": true
    },
    {
      "name": "synthetic_surface_points",
      "title": "Synthetic surface elevation measurement points",
      "object": "synthetic_surface_points",
      "class": [
        "data.frame"
      ],
      "fields": [
        "point_id",
        "x",
        "y",
        "surface_elevation"
      ],
      "rows": 55,
      "table": true,
      "tojson": true
    },
    {
      "name": "synthetic_transect",
      "title": "Synthetic cross-section transect",
      "object": "synthetic_transect",
      "class": [
        "data.frame"
      ],
      "fields": [
        "transect_id",
        "wkt",
        "crs"
      ],
      "rows": 1,
      "table": true,
      "tojson": true
    },
    {
      "name": "synthetic_validation_points",
      "title": "Synthetic independent validation points",
      "object": "synthetic_validation_points",
      "class": [
        "data.frame"
      ],
      "fields": [
        "validation_id",
        "x",
        "y",
        "head",
        "crs"
      ],
      "rows": 14,
      "table": true,
      "tojson": true
    },
    {
      "name": "synthetic_wells",
      "title": "Synthetic groundwater monitoring wells",
      "object": "synthetic_wells",
      "class": [
        "data.frame"
      ],
      "fields": [
        "well_id",
        "x",
        "y",
        "surface_elevation",
        "depth_to_water",
        "gw_elevation"
      ],
      "rows": 32,
      "table": true,
      "tojson": true
    }
  ],
  "_help": [
    {
      "page": "plot.potentiomap_contour_support",
      "title": "Plot classified contour support",
      "topics": [
        "plot.potentiomap_contour_support"
      ]
    },
    {
      "page": "potentiomap_conditions",
      "title": "potentiomap condition classes",
      "topics": [
        "potentiomap_arrow_endpoint_warning",
        "potentiomap_conditions",
        "potentiomap_contour_level_warning",
        "potentiomap_contour_support_error",
        "potentiomap_contour_support_warning",
        "potentiomap_contour_threshold_error",
        "potentiomap_contour_uncertainty_error",
        "potentiomap_crs_error",
        "potentiomap_error",
        "potentiomap_export_error",
        "potentiomap_input_error",
        "potentiomap_kriging_convergence_warning",
        "potentiomap_metadata_error",
        "potentiomap_support_warning",
        "potentiomap_tps_gcv_boundary_warning",
        "potentiomap_uk_instability_warning",
        "potentiomap_warning"
      ]
    },
    {
      "page": "potentiomap_result",
      "title": "Structured potentiometric-surface result",
      "topics": [
        "potentiomap_result"
      ]
    },
    {
      "page": "ps_anisotropy",
      "title": "Explore directional anisotropy in hydraulic head",
      "topics": [
        "ps_anisotropy"
      ]
    },
    {
      "page": "ps_arrow_vertices",
      "title": "Extract arrow base or tip points",
      "topics": [
        "ps_arrow_vertices"
      ]
    },
    {
      "page": "ps_candidate_network",
      "title": "Rank explicit candidate monitoring locations with recorded constraints",
      "topics": [
        "ps_candidate_network"
      ]
    },
    {
      "page": "ps_check_observations",
      "title": "Check groundwater observation records",
      "topics": [
        "ps_check_observations"
      ]
    },
    {
      "page": "ps_compare_methods",
      "title": "Compare validated interpolation methods",
      "topics": [
        "ps_compare_methods"
      ]
    },
    {
      "page": "ps_compare_surfaces",
      "title": "Compare two potentiometric surfaces",
      "topics": [
        "ps_compare_surfaces"
      ]
    },
    {
      "page": "ps_contour_support",
      "title": "Classify modeled contour sections by local prediction support",
      "topics": [
        "ps_contour_support"
      ]
    },
    {
      "page": "ps_contour_uncertainty",
      "title": "Construct pointwise contour-uncertainty bands",
      "topics": [
        "ps_contour_uncertainty"
      ]
    },
    {
      "page": "ps_contours",
      "title": "Create contours and a contour-level inventory",
      "topics": [
        "ps_contours"
      ]
    },
    {
      "page": "ps_cross_section",
      "title": "Build a plot-ready potentiometric cross-section",
      "topics": [
        "ps_cross_section"
      ]
    },
    {
      "page": "ps_depth_to_water_surface",
      "title": "Calculate depth to a water-table or potentiometric surface",
      "topics": [
        "ps_depth_to_water_surface"
      ]
    },
    {
      "page": "ps_diagnostics",
      "title": "Extract interpolation diagnostics",
      "topics": [
        "ps_diagnostics"
      ]
    },
    {
      "page": "ps_export_contour_support",
      "title": "Export classified contour-support products",
      "topics": [
        "ps_export_contour_support"
      ]
    },
    {
      "page": "ps_export_style",
      "title": "Export open GIS style XML",
      "topics": [
        "ps_export_style"
      ]
    },
    {
      "page": "ps_export_surfaces",
      "title": "Export potentiometric-surface products",
      "topics": [
        "ps_export_surfaces"
      ]
    },
    {
      "page": "ps_flow_arrows",
      "title": "Generate hydraulic-gradient arrows",
      "topics": [
        "ps_flow_arrows"
      ]
    },
    {
      "page": "ps_head_change",
      "title": "Compare paired measurements and modeled head change between events",
      "topics": [
        "ps_head_change"
      ]
    },
    {
      "page": "ps_interpolate",
      "title": "Interpolate potentiometric surfaces",
      "topics": [
        "ps_interpolate"
      ]
    },
    {
      "page": "ps_interpolate_grouped",
      "title": "Interpolate grouped groundwater observations",
      "topics": [
        "ps_interpolate_grouped"
      ]
    },
    {
      "page": "ps_interpolate_regions",
      "title": "Interpolate explicit regions independently",
      "topics": [
        "ps_interpolate_regions"
      ]
    },
    {
      "page": "ps_make_points",
      "title": "Make groundwater observation points",
      "topics": [
        "ps_make_points"
      ]
    },
    {
      "page": "ps_metadata",
      "title": "Inspect scientific metadata",
      "topics": [
        "ps_metadata"
      ]
    },
    {
      "page": "ps_method_disagreement",
      "title": "Map disagreement among interpolation methods",
      "topics": [
        "ps_method_disagreement"
      ]
    },
    {
      "page": "ps_network_thinning",
      "title": "Evaluate reproducible monitoring-network thinning scenarios",
      "topics": [
        "ps_network_thinning"
      ]
    },
    {
      "page": "ps_potentiometric_points",
      "title": "Build potentiometric points from depth-to-water measurements",
      "topics": [
        "ps_potentiometric_points"
      ]
    },
    {
      "page": "ps_prediction_support",
      "title": "Describe prediction support and extrapolation",
      "topics": [
        "ps_prediction_support"
      ]
    },
    {
      "page": "ps_quicklook",
      "title": "Draw a quicklook surface plot",
      "topics": [
        "ps_quicklook"
      ]
    },
    {
      "page": "ps_report",
      "title": "Render a package-owned technical report",
      "topics": [
        "ps_report"
      ]
    },
    {
      "page": "ps_sample_aoi",
      "title": "Make the sample area-of-interest polygon",
      "topics": [
        "ps_sample_aoi"
      ]
    },
    {
      "page": "ps_screen_groups",
      "title": "Assign or validate monitoring-well screen groups",
      "topics": [
        "ps_screen_groups"
      ]
    },
    {
      "page": "ps_select_event",
      "title": "Select a groundwater monitoring event",
      "topics": [
        "ps_select_event"
      ]
    },
    {
      "page": "ps_smooth_surface",
      "title": "Smooth a potentiometric surface raster",
      "topics": [
        "ps_smooth_surface"
      ]
    },
    {
      "page": "ps_split_domain",
      "title": "Validate and split an explicit hydrogeologic domain",
      "topics": [
        "ps_split_domain"
      ]
    },
    {
      "page": "ps_surface_ensemble",
      "title": "Combine compatible potentiometric surfaces",
      "topics": [
        "ps_surface_ensemble"
      ]
    },
    {
      "page": "ps_surface_profile",
      "title": "Extract one or more surface profiles along explicit lines",
      "topics": [
        "ps_surface_profile"
      ]
    },
    {
      "page": "ps_surface_sensitivity",
      "title": "Evaluate explicit interpolation sensitivity scenarios",
      "topics": [
        "ps_surface_sensitivity"
      ]
    },
    {
      "page": "ps_surface_uncertainty",
      "title": "Quantify model-conditional or resampling surface variability",
      "topics": [
        "ps_surface_uncertainty"
      ]
    },
    {
      "page": "ps_surfaces",
      "title": "Extract interpolated surfaces",
      "topics": [
        "ps_surfaces"
      ]
    },
    {
      "page": "ps_tune_interpolation",
      "title": "Tune interpolation parameters under recorded validation partitions",
      "topics": [
        "ps_tune_interpolation"
      ]
    },
    {
      "page": "ps_validate",
      "title": "Validate potentiometric-surface interpolation",
      "topics": [
        "ps_validate"
      ]
    },
    {
      "page": "ps_validate_arrows",
      "title": "Validate hydraulic-gradient arrow endpoints",
      "topics": [
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