{
  "_id": "6ac77c31de46216d5edd0a8f",
  "Package": "shelltrace",
  "Type": "Package",
  "Title": "Bivalve Growth and Trace Element Accumulation Model",
  "Version": "3.5.1",
  "Date": "2017-09-27",
  "Author": "Niels J. de Winter",
  "Maintainer": "Niels J. de Winter <niels.de.winter@vub.be>",
  "Description": "Contains all the formulae of the growth and trace element\nuptake model described in the equally-named Geoscientific Model\nDevelopment paper (de Winter, 2017,\n<doi:10.5194/gmd-2017-137>). The model takes as input a file\nwith X- and Y-coordinates of digitized growth increments\nrecognized on a longitudinal cross section through the bivalve\nshell, as well as a BMP file of an elemental map of the cross\nsection surface with chemically distinct phases separated by\nphase analysis. It proceeds by a step-by-step process described\nin the paper, by which digitized growth increments are used to\ncalculate changes in shell height, shell thickness, shell\nvolume, shell mass and shell growth rate through the bivalve's\nlife time. Then, results of this growth modelling are combined\nwith the trace element mapping results to trace the\nincorporation of trace elements into the bivalve shell. Results\nof various modelling parameters can be exported in the form of\nXLSX files.",
  "License": "GPL-3",
  "LazyData": "true",
  "URL": "https://github.com/nielsjdewinter/ShellTrace,\nhttps://doi.org/10.5194/gmd-2017-137-supplement,\nhttp://nidewint.wixsite.com/nielsdewinter",
  "BugReports": "https://github.com/nielsjdewinter/ShellTrace/issues",
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  "Repository": "https://nielsjdewinter.r-universe.dev",
  "Date/Publication": "2017-11-02 08:57:26 UTC",
  "RemoteUrl": "https://github.com/nielsjdewinter/shelltrace",
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  "_created": "2026-10-08T10:19:02.000Z",
  "_published": "2026-10-08T11:19:13.745Z",
  "_buildurl": "https://github.com/r-universe/nielsjdewinter/actions/runs/37762369124",
  "_status": "success",
  "_host": "GitHub-Actions",
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    "author": "nielsjdewinter <niels_de_winter@live.nl>",
    "committer": "nielsjdewinter <niels_de_winter@live.nl>",
    "message": "Solve error in names of exported datasets\n",
    "time": 1509613046
  },
  "_maintainer": {
    "name": "Niels J. de Winter",
    "email": "niels.de.winter@vub.be"
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      "role": "Imports"
    },
    {
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      "role": "Imports"
    },
    {
      "package": "tiff",
      "role": "Imports"
    },
    {
      "package": "grDevices",
      "role": "Imports"
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    {
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      "role": "Imports"
    }
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  "_owner": "nielsjdewinter",
  "_selfowned": true,
  "_usedby": 0,
  "_updates": [],
  "_tags": [],
  "_topics": [
    "bivalve",
    "chemistry",
    "elements",
    "fisheries",
    "growth",
    "mollusk",
    "palaeobiology",
    "palaeoecology",
    "paleobiology",
    "paleoclimate",
    "shell",
    "openjdk"
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    "name": "Niels J. de Winter",
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    "description": "Assistant professor Marine Geology and Paleoclimatology"
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    "extra/manual.pdf",
    "extra/NEWS.html",
    "extra/NEWS.txt",
    "extra/shelltrace.html"
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  "_homeurl": "https://github.com/nielsjdewinter/shelltrace",
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  "_releases": [
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    "Oyster_combined_run",
    "Oyster_Convert_cross_section",
    "Oyster_el_time",
    "Oyster_ellipse_parameters",
    "Oyster_Export",
    "Oyster_growth_run",
    "Oyster_import_BMP",
    "Oyster_import_phases",
    "Oyster_import_TIF",
    "Oyster_incr_area",
    "Oyster_incr_cross_section",
    "Oyster_Mass_gain",
    "Oyster_phase_export",
    "Oyster_phase_matrix_BMP",
    "Oyster_phase_matrix_TIF",
    "Oyster_phase_run",
    "Oyster_phase_stats",
    "Oyster_plot_cross_section",
    "Oyster_plot_incr_CS",
    "Oyster_plot_incr_fill",
    "Oyster_run_sec2",
    "Oyster_run_sec3",
    "Oyster_run_sec4",
    "Oyster_run_sec5",
    "Oyster_run_sec6",
    "Oyster_Shell_height",
    "Oyster_Shell_thickness",
    "Oyster_subincr_area",
    "Oyster_subincr_av_thickness",
    "Oyster_subincr_av_thickness_X",
    "Oyster_subincr_phases",
    "Oyster_subincr_shell_height",
    "Oyster_Volumes",
    "Oyster_Z_matrices",
    "pma"
  ],
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      "name": "BMP",
      "title": "BMP image of phase map of cross section of modern oyster.",
      "object": "BMP",
      "class": [
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      ],
      "fields": [],
      "table": false,
      "tojson": true
    },
    {
      "name": "cross_section",
      "title": "Digitized growth increments in cross section of modern oyster rescaled to the same X-axis.",
      "object": "cross_section",
      "class": [
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      ],
      "fields": [
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    },
    {
      "name": "el_time",
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      ],
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      "table": true,
      "tojson": true
    },
    {
      "name": "image_length",
      "title": "Length (in mm) of the digitized phase map image.",
      "object": "image_length",
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      "fields": [],
      "table": false,
      "tojson": true
    },
    {
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      "title": "Interpolated subincrements in cross section of modern oyster rescaled to the same X-axis.",
      "object": "IncG",
      "class": [
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      ],
      "fields": [],
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      "table": true,
      "tojson": true
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    {
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      "object": "incr_matrix0",
      "class": [
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      ],
      "fields": [
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        "age (days)",
        "age_cal (days)"
      ],
      "rows": 8,
      "table": true,
      "tojson": true
    },
    {
      "name": "incr_matrix1",
      "title": "Matrix containing data calculated for each growth band.",
      "object": "incr_matrix1",
      "class": [
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      "fields": [
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        "age (days)",
        "age_cal (days)",
        "incr_area",
        "incr_cumarea"
      ],
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      "table": true,
      "tojson": true
    },
    {
      "name": "incr_matrix2",
      "title": "Matrix containing data calculated for each growth band.",
      "object": "incr_matrix2",
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      "fields": [
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        "age (days)",
        "age_cal (days)",
        "incr_area",
        "incr_cumarea",
        "av_thickness"
      ],
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      "table": true,
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    },
    {
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      "object": "incr_matrix3",
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        "p1y",
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        "shell_height"
      ],
      "rows": 8,
      "table": true,
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    },
    {
      "name": "lengthfactor",
      "title": "Multiplier used to convert shell cross section from pixels to mm",
      "object": "lengthfactor",
      "class": [
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      ],
      "fields": [],
      "table": false,
      "tojson": true
    },
    {
      "name": "M_el_mat",
      "title": "Matrix of modelled mass accumulation rates per trace element",
      "object": "M_el_mat",
      "class": [
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      ],
      "fields": [
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        "O",
        "Na",
        "Mg",
        "Al",
        "Si",
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        "S",
        "Cl",
        "K",
        "Ca",
        "Ti",
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        "Mn",
        "Fe",
        "Ni",
        "Cu",
        "Zn",
        "Br",
        "Rb",
        "Sr",
        "Rh",
        "Ba",
        "Pb"
      ],
      "rows": 1291,
      "table": true,
      "tojson": true
    },
    {
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      "title": "Matrix of modelled cumulative mass accumulation rates per trace element",
      "object": "M_el_mat_c",
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      "fields": [
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    },
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      "title": "Digitized growth increments in cross section of modern oyster.",
      "object": "O1_input",
      "class": [
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      "table": true,
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      "object": "O1_phase",
      "class": [
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      ],
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        "Name",
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        "G",
        "B",
        "density",
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      ],
      "rows": 4,
      "table": true,
      "tojson": true
    },
    {
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      "object": "Oyster_height",
      "class": [
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      ],
      "fields": [],
      "table": false,
      "tojson": true
    },
    {
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      "object": "Oyster_length",
      "class": [
        "numeric"
      ],
      "fields": [],
      "table": false,
      "tojson": true
    },
    {
      "name": "phase_mat",
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      "object": "phase_mat",
      "class": [
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        "array"
      ],
      "fields": [],
      "rows": 4,
      "table": true,
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    },
    {
      "name": "phase_stat",
      "title": "Statistics of elemental concentrations in XRF map of oyster",
      "object": "phase_stat",
      "class": [
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      ],
      "fields": [
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        "pixels",
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        "S",
        "Cl",
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      ],
      "rows": 5,
      "table": true,
      "tojson": true
    },
    {
      "name": "phasemat",
      "title": "Matrix of phases names for each pixel in the phase map",
      "object": "phasemat",
      "class": [
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        "array"
      ],
      "fields": [],
      "rows": 2258,
      "table": true,
      "tojson": true
    },
    {
      "name": "pixelsize",
      "title": "Size of pixels in phase map in mm",
      "object": "pixelsize",
      "class": [
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      ],
      "fields": [],
      "table": false,
      "tojson": true
    },
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      "name": "subincr_matrix0",
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      "object": "subincr_matrix0",
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    },
    {
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        "a_ellipse",
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        "VolI",
        "VolC"
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        "shell_height",
        "firstl",
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        "Growth_rate",
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      "class": [
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      "fields": [],
      "table": false,
      "tojson": true
    },
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      "name": "Z_mat",
      "title": "Z-values describing the base ellipse of the oyster",
      "object": "Z_mat",
      "class": [
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        "array"
      ],
      "fields": [],
      "rows": 101,
      "table": true,
      "tojson": true
    }
  ],
  "_help": [
    {
      "page": "BMP",
      "title": "BMP image of phase map of cross section of modern oyster.",
      "topics": [
        "BMP"
      ]
    },
    {
      "page": "cross_section",
      "title": "Digitized growth increments in cross section of modern oyster rescaled to the same X-axis.",
      "topics": [
        "cross_section"
      ]
    },
    {
      "page": "el_time",
      "title": "Matrix listing the concentrations of elements in every subincrement",
      "topics": [
        "el_time"
      ]
    },
    {
      "page": "image_length",
      "title": "Length (in mm) of the digitized phase map image.",
      "topics": [
        "image_length"
      ]
    },
    {
      "page": "IncG",
      "title": "Interpolated subincrements in cross section of modern oyster rescaled to the same X-axis.",
      "topics": [
        "IncG"
      ]
    },
    {
      "page": "incr_matrix0",
      "title": "Matrix containing data calculated for each growth band.",
      "topics": [
        "incr_matrix0"
      ]
    },
    {
      "page": "incr_matrix1",
      "title": "Matrix containing data calculated for each growth band.",
      "topics": [
        "incr_matrix1"
      ]
    },
    {
      "page": "incr_matrix2",
      "title": "Matrix containing data calculated for each growth band.",
      "topics": [
        "incr_matrix2"
      ]
    },
    {
      "page": "incr_matrix3",
      "title": "Matrix containing data calculated for each growth band.",
      "topics": [
        "incr_matrix3"
      ]
    },
    {
      "page": "lengthfactor",
      "title": "Multiplier used to convert shell cross section from pixels to mm",
      "topics": [
        "lengthfactor"
      ]
    },
    {
      "page": "M_el_mat",
      "title": "Matrix of modelled mass accumulation rates per trace element",
      "topics": [
        "M_el_mat"
      ]
    },
    {
      "page": "M_el_mat_c",
      "title": "Matrix of modelled cumulative mass accumulation rates per trace element",
      "topics": [
        "M_el_mat_c"
      ]
    },
    {
      "page": "O1_input",
      "title": "Digitized growth increments in cross section of modern oyster.",
      "topics": [
        "O1_input"
      ]
    },
    {
      "page": "O1_phase",
      "title": "Characteristics of phase in XRF map of oyster",
      "topics": [
        "O1_phase"
      ]
    },
    {
      "page": "Oyster_accumulation",
      "title": "Calculate trace element accumulation rates",
      "topics": [
        "Oyster_accumulation"
      ]
    },
    {
      "page": "Oyster_combined_run",
      "title": "Runs the growth and trace element model",
      "topics": [
        "Oyster_combined_run"
      ]
    },
    {
      "page": "Oyster_Convert_cross_section",
      "title": "Function that converts XY-data of digitized cross section",
      "topics": [
        "Oyster_Convert_cross_section"
      ]
    },
    {
      "page": "Oyster_el_time",
      "title": "Calculate concentrations of trace elements per sub-increment",
      "topics": [
        "Oyster_el_time"
      ]
    },
    {
      "page": "Oyster_ellipse_parameters",
      "title": "Function that calculates the parameters of the base ellipse used for bivalve growth modelling",
      "topics": [
        "Oyster_ellipse_parameters"
      ]
    },
    {
      "page": "Oyster_Export",
      "title": "Function that exports data of the growth model",
      "topics": [
        "Oyster_Export"
      ]
    },
    {
      "page": "Oyster_growth_run",
      "title": "Runs the entire growth model",
      "topics": [
        "Oyster_growth_run"
      ]
    },
    {
      "page": "Oyster_height",
      "title": "Measured height of the shell",
      "topics": [
        "Oyster_height"
      ]
    },
    {
      "page": "Oyster_import_BMP",
      "title": "Function that imports a BMP of an XRF map",
      "topics": [
        "Oyster_import_BMP"
      ]
    },
    {
      "page": "Oyster_import_phases",
      "title": "Function that imports phase data",
      "topics": [
        "Oyster_import_phases"
      ]
    },
    {
      "page": "Oyster_import_TIF",
      "title": "Function that imports a TIF file",
      "topics": [
        "Oyster_import_TIF"
      ]
    },
    {
      "page": "Oyster_incr_area",
      "title": "Area between shell increments",
      "topics": [
        "Oyster_incr_area"
      ]
    },
    {
      "page": "Oyster_incr_cross_section",
      "title": "Formula that interpolates shell increments",
      "topics": [
        "Oyster_incr_cross_section"
      ]
    },
    {
      "page": "Oyster_length",
      "title": "Measured length of the shell",
      "topics": [
        "Oyster_length"
      ]
    },
    {
      "page": "Oyster_Mass_gain",
      "title": "Formula that calculates mass increase of bivalve shell with time",
      "topics": [
        "Oyster_Mass_gain"
      ]
    },
    {
      "page": "Oyster_phase_export",
      "title": "Export results of trace element model",
      "topics": [
        "Oyster_phase_export"
      ]
    },
    {
      "page": "Oyster_phase_matrix_BMP",
      "title": "Function that calculates phase matrix",
      "topics": [
        "Oyster_phase_matrix_BMP"
      ]
    },
    {
      "page": "Oyster_phase_matrix_TIF",
      "title": "Function that calculates phase matrix",
      "topics": [
        "Oyster_phase_matrix_TIF"
      ]
    },
    {
      "page": "Oyster_phase_run",
      "title": "Runs the entire trace element model",
      "topics": [
        "Oyster_phase_run"
      ]
    },
    {
      "page": "Oyster_phase_stats",
      "title": "Function that exports phase statistics",
      "topics": [
        "Oyster_phase_stats"
      ]
    },
    {
      "page": "Oyster_plot_cross_section",
      "title": "Plot the converted shell cross section",
      "topics": [
        "Oyster_plot_cross_section"
      ]
    },
    {
      "page": "Oyster_plot_incr_CS",
      "title": "Plot the result of interpolation of sub-increments",
      "topics": [
        "Oyster_plot_incr_CS"
      ]
    },
    {
      "page": "Oyster_plot_incr_fill",
      "title": "Plot the result of interpolation of sub-increments with a coloured area plot",
      "topics": [
        "Oyster_plot_incr_fill"
      ]
    },
    {
      "page": "Oyster_run_sec2",
      "title": "Runs complete Step 2 of the growth model",
      "topics": [
        "Oyster_run_sec2"
      ]
    },
    {
      "page": "Oyster_run_sec3",
      "title": "Runs complete Step 3 of the growth model",
      "topics": [
        "Oyster_run_sec3"
      ]
    },
    {
      "page": "Oyster_run_sec4",
      "title": "Runs complete Step 4 of the growth model",
      "topics": [
        "Oyster_run_sec4"
      ]
    },
    {
      "page": "Oyster_run_sec5",
      "title": "Runs complete Step 5 of the trace element model",
      "topics": [
        "Oyster_run_sec5"
      ]
    },
    {
      "page": "Oyster_run_sec6",
      "title": "Runs complete Step 6 of the trace element model",
      "topics": [
        "Oyster_run_sec6"
      ]
    },
    {
      "page": "Oyster_Shell_height",
      "title": "Formula that calculates shell height through time",
      "topics": [
        "Oyster_Shell_height"
      ]
    },
    {
      "page": "Oyster_Shell_thickness",
      "title": "Formula that calculates average shell thickness through time",
      "topics": [
        "Oyster_Shell_thickness"
      ]
    },
    {
      "page": "Oyster_subincr_area",
      "title": "Formula that calculates area between sub-increments",
      "topics": [
        "Oyster_subincr_area"
      ]
    },
    {
      "page": "Oyster_subincr_av_thickness",
      "title": "Formula that calculates average shell thickness through time",
      "topics": [
        "Oyster_subincr_av_thickness"
      ]
    },
    {
      "page": "Oyster_subincr_av_thickness_X",
      "title": "Formula that calculates average shell thickness through time",
      "topics": [
        "Oyster_subincr_av_thickness_X"
      ]
    },
    {
      "page": "Oyster_subincr_phases",
      "title": "Calculates proportion of phases in each sub-increment",
      "topics": [
        "Oyster_subincr_phases"
      ]
    },
    {
      "page": "Oyster_subincr_shell_height",
      "title": "A fomula to calculate shell height per sub-increment",
      "topics": [
        "Oyster_subincr_shell_height"
      ]
    },
    {
      "page": "Oyster_Volumes",
      "title": "Formula that calculates volume of the shell through time",
      "topics": [
        "Oyster_Volumes"
      ]
    },
    {
      "page": "Oyster_Z_matrices",
      "title": "Function that calculates matrices of Z-values for all sub-increments and all X-values",
      "topics": [
        "Oyster_Z_matrices"
      ]
    },
    {
      "page": "phase_mat",
      "title": "Matrix listing the amount of pixels of each phase in every subincrement",
      "topics": [
        "phase_mat"
      ]
    },
    {
      "page": "phase_stat",
      "title": "Statistics of elemental concentrations in XRF map of oyster",
      "topics": [
        "phase_stat"
      ]
    },
    {
      "page": "phasemat",
      "title": "Matrix of phases names for each pixel in the phase map",
      "topics": [
        "phasemat"
      ]
    },
    {
      "page": "pixelsize",
      "title": "Size of pixels in phase map in mm",
      "topics": [
        "pixelsize"
      ]
    },
    {
      "page": "pma",
      "title": "Function to do an n-point moving average",
      "topics": [
        "pma"
      ]
    },
    {
      "page": "ShellTrace-package",
      "title": "ShellTrace: Growth and trace element uptake modelling in bivalve shells",
      "topics": [
        "ShellTrace"
      ]
    },
    {
      "page": "subincr_matrix0",
      "title": "Matrix containing data calculated for each growth band.",
      "topics": [
        "subincr_matrix0"
      ]
    },
    {
      "page": "subincr_matrix1",
      "title": "Matrix containing data calculated for each growth band.",
      "topics": [
        "subincr_matrix1"
      ]
    },
    {
      "page": "subincr_matrix2",
      "title": "Matrix containing data calculated for each growth band.",
      "topics": [
        "subincr_matrix2"
      ]
    },
    {
      "page": "subincr_matrix3",
      "title": "Matrix containing data calculated for each growth band.",
      "topics": [
        "subincr_matrix3"
      ]
    },
    {
      "page": "subincr_matrix4",
      "title": "Matrix containing data calculated for each growth band.",
      "topics": [
        "subincr_matrix4"
      ]
    },
    {
      "page": "subincr_matrix5",
      "title": "Matrix containing data calculated for each growth band.",
      "topics": [
        "subincr_matrix5"
      ]
    },
    {
      "page": "subincr_matrix6",
      "title": "Matrix containing data calculated for each growth band.",
      "topics": [
        "subincr_matrix6"
      ]
    },
    {
      "page": "TIF",
      "title": "TIF image of phase map of cross section of modern oyster.",
      "topics": [
        "TIF"
      ]
    },
    {
      "page": "Z_mat",
      "title": "Z-values describing the base ellipse of the oyster",
      "topics": [
        "Z_mat"
      ]
    }
  ],
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      "homepage": "https://openjdk.java.net/",
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  "_score": 2.4913616938342726,
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  "_nocasepkg": "shelltrace",
  "_universes": [
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