VolcanoData

VolcanoData["name","property"]
gives the value of the specified property for the volcano .

VolcanoData[{"name1","name2",},"property"]
gives a list of property values for the specified volcano names.

VolcanoData["name", "property", annotation]
gives the specified annotation associated with the property.

DetailsDetails

  • The specified in VolcanoData can be an Entity, EntityClass, or canonical name.
  • The specified should be an EntityProperty, EntityPropertyClass, canonical name, or list thereof.
  • VolcanoData[] gives a list of all volcano entities.
  • VolcanoData["Properties"] gives a list of available properties.
  • Properties that do not apply or are not known in a particular case are indicated by Missing[].
  • Properties include:
  • "Coordinates"coordinates
    "Countries"country
    "Elevation"elevation
    "EruptionsStandardName"notable eruptions
    "HighestPoint"prominence
    "LastKnownEruptionDate"last known eruption
    "Latitude"latitude
    "Longitude"longitude
    "Name"name
    "SubregionName"subregion name
    "Type"type
  • Some properties are available for VolcanoData as a whole and can be given using the form VolcanoData["property"]. Such properties include:
  • "Entities"all available entitites
    "EntityCount"total number of available entitites
    "Classes"all avaialble entity classes
    "EntityClassCount"total number of available entity classes
    "SampleEntitites"list of sample entities
    "SampleEntityClasses"list of sample entity classes
    "EntityCanonicalNames"list of all entity canonical names
    "PropertyCanonicalNames"list of all property canonical names
    "EntityClassCanonicalNames"list of all entity class canonical names
    "RandomEntities"pseudorandom sample entities
    {"RandomEntitites",n}n pseudorandom entities
    "RandomEntityClasses"pseudorandom sample entity classes
    {"RandomEntityClasses",n}n pseudorandom entity classes
  • The following annotations can be used in the third argument of VolcanoData["name","property",annotation]:
  • "Qualifiers"the list of possible qualifiers for the property
    "QualifierValues"the list of possible values that can be given to each qualifier
    "DefaultQualifierValues"the list of default values for the property's qualifiers
    "Description"a brief textual description of the property
    "Definition"a detailed textual definition of the property
    "Source"source information for the property
    "Date"the date associated with the entity-property value (if any)
    "PhysicalQuantity"the physical quantity associated with the entity-property value
    "Unit"the unit associated with the entity-property value
    "EntityAssociation"an Association of entities and entity-property values
    "PropertyAssociation"an Association of properties and entity-property values
  • If a function is provided as an annotation, it will be used to aggregate the result data. Typical aggregation functions include:
  • Minthe minimum value
    Maxthe maximum value
    Meanthe mean value
    Commonestthe most frequently occuring value
    Medianthe median value
    Totalreturns the total
    Lengththe number of elements

ExamplesExamplesopen allclose all

Basic Examples  (6)Basic Examples  (6)

Get a list of all volcanoes:

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Get the list of properties associated with volcanoes:

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Get coordinates for a specific volcano entity:

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Get properties for a class of volcanoes:

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Get an Association of results from an EntityClass:

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Specifying an aggregation function for results of a VolcanoData query:

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Use Ctrl+Equal for entity discovery:

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Use Ctrl+Equal to discover properties of a volcano:

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Explore properties of a volcano:

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Compare properties of multiple volcanoes:

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Introduced in 2014
(10.0)