{
  "$defs": {
    "DataField": {
      "additionalProperties": false,
      "description": "Description of a data field (column) compatible with frictionless table-schema and extended with echemdb-specific properties for physical quantities.",
      "properties": {
        "description": {
          "description": "A description of that field.",
          "type": [
            "string",
            "null"
          ]
        },
        "dimension": {
          "description": "Physical dimension of the field (e.g., 'time', 'potential', 'current density').",
          "type": [
            "string",
            "null"
          ]
        },
        "format": {
          "description": "Format specification for the field type (default, email, uri, binary, uuid for strings; default for numbers).",
          "type": [
            "string",
            "null"
          ]
        },
        "name": {
          "description": "Name of the data field. Use single letters for specific systems. Otherwise use descriptive names like 't_rel', 'E_WE', or 'j_WE'.",
          "type": "string"
        },
        "orientation": {
          "$ref": "#/$defs/FieldOrientation",
          "description": "Axis orientation in plots (horizontal for x-axis, vertical for y-axis)."
        },
        "reference": {
          "description": "Reference electrode or reference point for this measurement (electrochemistry-specific).",
          "type": [
            "string",
            "null"
          ]
        },
        "title": {
          "description": "A human-readable title for this field.",
          "type": [
            "string",
            "null"
          ]
        },
        "type": {
          "description": "Data type of the field (string, number, integer, boolean, object, array, date, time, datetime, year, duration, geopoint, geojson, any).",
          "type": [
            "string",
            "null"
          ]
        },
        "unit": {
          "description": "Unit of measurement for this field (SI or conventional electrochemical units), following astropy's string unit notation.",
          "type": [
            "string",
            "null"
          ]
        }
      },
      "required": [
        "name"
      ],
      "title": "DataField",
      "type": "object"
    },
    "FieldOrientation": {
      "description": "Axis orientation in plots.",
      "enum": [
        "horizontal",
        "vertical"
      ],
      "title": "FieldOrientation",
      "type": "string"
    },
    "FigureDescription": {
      "additionalProperties": false,
      "description": "Description of the data to a figure or plot including data type and measurement details.",
      "properties": {
        "comment": {
          "description": "Additional notes about the figure or data.",
          "type": [
            "string",
            "null"
          ]
        },
        "fields": {
          "description": "Description of data fields/columns in the figure.",
          "items": {
            "$ref": "#/$defs/DataField"
          },
          "type": [
            "array",
            "null"
          ]
        },
        "measurementType": {
          "description": "Acronym type for the measurement performed, such as CV, EIS, XPS, etc.",
          "type": [
            "string",
            "null"
          ]
        },
        "scanRate": {
          "anyOf": [
            {
              "$ref": "#/$defs/Quantity"
            },
            {
              "type": "null"
            }
          ],
          "description": "The rate at which the data has been recorded."
        },
        "simultaneousMeasurements": {
          "description": "Other measurements performed simultaneously, such as ring current, IR, Raman, ICP-MS.",
          "items": {
            "type": "string"
          },
          "type": [
            "array",
            "null"
          ]
        },
        "type": {
          "$ref": "#/$defs/FigureDescriptionType",
          "description": "Source or origin of the data, such as digitized, raw, simulated, or processed."
        }
      },
      "required": [
        "type"
      ],
      "title": "FigureDescription",
      "type": "object"
    },
    "FigureDescriptionType": {
      "description": "Source or origin of the data.",
      "enum": [
        "digitized",
        "raw",
        "simulated",
        "processed"
      ],
      "title": "FigureDescriptionType",
      "type": "string"
    },
    "Quantity": {
      "additionalProperties": false,
      "description": "A physical quantity with a value, unit, and optional uncertainty.",
      "properties": {
        "calculation": {
          "description": "Method or formula used to calculate this quantity.",
          "type": [
            "string",
            "null"
          ]
        },
        "comment": {
          "description": "Additional notes about the measurement or quantity.",
          "type": [
            "string",
            "null"
          ]
        },
        "uncertainty": {
          "anyOf": [
            {
              "$ref": "#/$defs/Uncertainty"
            },
            {
              "type": "null"
            }
          ],
          "description": "Uncertainty information for a measured quantity."
        },
        "unit": {
          "description": "Unit of measurement following astropy's string notation (e.g., 'mol / l', 'V', 'mA / cm2'). Use an empty string for dimensionless quantities.",
          "type": [
            "string",
            "number",
            "null"
          ]
        },
        "value": {
          "description": "Numerical value of the quantity.",
          "type": [
            "string",
            "number",
            "null"
          ]
        }
      },
      "title": "Quantity",
      "type": "object"
    },
    "SvgdigitizerEchemdbMetadata": {
      "additionalProperties": false,
      "description": "Simplified echemdb metadata for digitized data.",
      "properties": {
        "experimental": {
          "anyOf": [
            {
              "$ref": "#/$defs/SvgdigitizerExperimental"
            },
            {
              "type": "null"
            }
          ],
          "description": "Experimental tags or keywords."
        },
        "figureDescription": {
          "$ref": "#/$defs/FigureDescription",
          "description": "Description of the digitized figure."
        },
        "source": {
          "anyOf": [
            {
              "$ref": "#/$defs/SvgdigitizerSource"
            },
            {
              "type": "null"
            }
          ],
          "description": "Source publication information for digitized data."
        }
      },
      "required": [
        "figureDescription"
      ],
      "title": "SvgdigitizerEchemdbMetadata",
      "type": "object"
    },
    "SvgdigitizerExperimental": {
      "additionalProperties": false,
      "description": "Experimental tags or keywords for svgdigitizer.",
      "properties": {
        "tags": {
          "description": "List of tags describing the experiment or measurement.",
          "items": {
            "type": "string"
          },
          "type": [
            "array",
            "null"
          ]
        }
      },
      "title": "SvgdigitizerExperimental",
      "type": "object"
    },
    "SvgdigitizerPackage": {
      "additionalProperties": true,
      "description": "Data package schema for svgdigitizer output following the Frictionless Data Package specification with simplified echemdb metadata.",
      "properties": {
        "resources": {
          "description": "Data resources within the package.",
          "items": {
            "allOf": [
              {
                "$ref": "https://datapackage.org/profiles/2.0/dataresource.json"
              },
              {
                "$ref": "#/$defs/SvgdigitizerResource"
              }
            ]
          },
          "type": [
            "array",
            "null"
          ]
        }
      },
      "title": "SvgdigitizerPackage",
      "type": "object"
    },
    "SvgdigitizerResource": {
      "additionalProperties": true,
      "description": "A resource created by svgdigitizer with minimal echemdb metadata.",
      "properties": {
        "metadata": {
          "anyOf": [
            {
              "$ref": "#/$defs/SvgdigitizerResourceMetadata"
            },
            {
              "type": "null"
            }
          ],
          "description": "Metadata container for the digitized resource."
        }
      },
      "title": "SvgdigitizerResource",
      "type": "object"
    },
    "SvgdigitizerResourceMetadata": {
      "additionalProperties": false,
      "description": "Metadata container for svgdigitizer output.",
      "properties": {
        "echemdb": {
          "$ref": "#/$defs/SvgdigitizerEchemdbMetadata",
          "description": "Simplified echemdb metadata for digitized data."
        }
      },
      "required": [
        "echemdb"
      ],
      "title": "SvgdigitizerResourceMetadata",
      "type": "object"
    },
    "SvgdigitizerSource": {
      "additionalProperties": false,
      "description": "Source publication information for digitized data.",
      "properties": {
        "bibdata": {
          "description": "BibTeX bibliographic data.",
          "type": [
            "string",
            "null"
          ]
        },
        "citationKey": {
          "description": "BibTeX citation key for the source following <FirstAuthorName>_<Year>_<FirstWordOfTitle>_<FirstPageNumber> format.",
          "type": [
            "string",
            "null"
          ]
        },
        "curve": {
          "description": "Specific curve identifier within the figure.",
          "type": [
            "string",
            "null"
          ]
        },
        "figure": {
          "description": "Figure identifier in the source publication.",
          "type": [
            "string",
            "null"
          ]
        },
        "techniques": {
          "description": "Techniques used in the source data.",
          "items": {
            "type": "string"
          },
          "type": [
            "array",
            "null"
          ]
        },
        "url": {
          "description": "URL or DOI of the source publication.",
          "pattern": "^https?://.*$",
          "type": [
            "string",
            "null"
          ]
        }
      },
      "title": "SvgdigitizerSource",
      "type": "object"
    },
    "Uncertainty": {
      "additionalProperties": false,
      "description": "Uncertainty information for a measured quantity.",
      "properties": {
        "comment": {
          "description": "Additional information about the uncertainty estimation.",
          "type": [
            "string",
            "null"
          ]
        },
        "negativeValue": {
          "description": "Lower bound (-) for asymmetric uncertainties.",
          "type": [
            "number",
            "null"
          ]
        },
        "positiveValue": {
          "description": "Upper bound (+) for asymmetric uncertainties.",
          "type": [
            "number",
            "null"
          ]
        },
        "type": {
          "$ref": "#/$defs/UncertaintyType",
          "description": "Type of uncertainty (absolute or relative)."
        },
        "unit": {
          "description": "Unit of the uncertainty value, following astropy's string notation. Use an empty string for dimensionless quantities.",
          "type": [
            "string",
            "null"
          ]
        },
        "value": {
          "description": "Symmetric uncertainty value (±).",
          "type": [
            "number",
            "null"
          ]
        }
      },
      "title": "Uncertainty",
      "type": "object"
    },
    "UncertaintyType": {
      "description": "Type of uncertainty measurement.",
      "enum": [
        "absolute",
        "relative"
      ],
      "title": "UncertaintyType",
      "type": "string"
    }
  },
  "$id": "https://echemdb.github.io/metadata-schema/svgdigitizer_package",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "additionalProperties": true,
  "description": "Data package schema for svgdigitizer output following the Frictionless Data Package specification with simplified echemdb metadata.",
  "metamodel_version": "1.7.0",
  "properties": {
    "resources": {
      "description": "Data resources within the package.",
      "items": {
        "allOf": [
          {
            "$ref": "https://datapackage.org/profiles/2.0/dataresource.json"
          },
          {
            "$ref": "#/$defs/SvgdigitizerResource"
          }
        ]
      },
      "type": [
        "array",
        "null"
      ]
    }
  },
  "title": "svgdigitizer_package",
  "type": "object",
  "version": null
}