eml_get
Arguments
- x
an EML object or child/descendant object
- element
name of the element to be extracted. If multiple occurrences are found, will extract all
- from
explicit type for the input format. Possible values: "xml", "json", "list", or "guess" with "list" as the default.
- ...
additional arguments
Examples
# \donttest{
f <- system.file("tests", emld::eml_version(), "eml-datasetWithUnits.xml", package = "emld")
eml <- read_eml(f)
eml_get(eml, "physical")
#> characterEncoding: ASCII
#> dataFormat:
#> textFormat:
#> numHeaderLines: '1'
#> attributeOrientation: column
#> simpleDelimited:
#> fieldDelimiter: \t
#> distribution:
#> online:
#> url: http://metacat.nceas.ucsb.edu/knb/servlet/metacat?action=read&docid=knb.46.1
#> objectName: CDR LTER-patterns among communities.txt
#> size:
#> unit: bytes
#> size: '1245'
eml_get(eml, "attributeList")
#> attribute:
#> - id: att.1
#> attributeName: fld
#> attributeLabel: Field
#> attributeDefinition: "Field where the data was collected\n "
#> storageType: string
#> measurementScale:
#> nominal:
#> nonNumericDomain:
#> id: nd.1
#> textDomain:
#> definition: Valid names of fields
#> - id: att.2
#> attributeName: year
#> attributeLabel: year
#> attributeDefinition: "The year the data was collected\n "
#> storageType: gYear
#> measurementScale:
#> dateTime:
#> formatString: YYYY
#> dateTimePrecision: '1'
#> dateTimeDomain:
#> id: dd.2
#> bounds:
#> minimum:
#> exclusive: 'false'
#> minimum: '1944'
#> - id: att.3
#> attributeName: sr
#> attributeLabel: Species Richness
#> attributeDefinition: Species richness for CDR
#> storageType: float
#> measurementScale:
#> interval:
#> unit:
#> standardUnit: number
#> precision: '0.5'
#> numericDomain:
#> id: nd.3
#> numberType: real
#> bounds:
#> minimum:
#> exclusive: 'true'
#> minimum: '0'
#> - id: att.4
#> attributeName: pctcov
#> attributeLabel: percent cover
#> attributeDefinition: "The percent ground cover on the field\n "
#> storageType: float
#> measurementScale:
#> ratio:
#> unit:
#> standardUnit: dimensionless
#> precision: '0.1'
#> numericDomain:
#> id: nd.4
#> numberType: real
#> bounds:
#> minimum:
#> exclusive: 'true'
#> minimum: '0'
#> maximum:
#> exclusive: 'true'
#> maximum: 1e2
#> - id: att.5
#> attributeName: avesr91
#> attributeLabel: Average Species Richness for 1991
#> attributeDefinition: "The average species richness for the field in 1991\n "
#> storageType: float
#> measurementScale:
#> ratio:
#> unit:
#> standardUnit: second
#> precision: '0.1'
#> numericDomain:
#> id: nd.5
#> numberType: real
#> bounds:
#> minimum:
#> exclusive: 'true'
#> minimum: '0'
#> - id: att.6
#> attributeName: avesr92
#> attributeLabel: Average Species Richness for 1992
#> attributeDefinition: "The average species richness for the field in 1992\n "
#> storageType: float
#> measurementScale:
#> ratio:
#> unit:
#> standardUnit: cubicFeetPerSecond
#> precision: '0.1'
#> numericDomain:
#> references: nd.5
#> - id: att.7
#> attributeName: avesr93
#> attributeLabel: Average Species Richness for 1993
#> attributeDefinition: "The average species richness for the field in 1993\n "
#> storageType: float
#> measurementScale:
#> ratio:
#> unit:
#> standardUnit: cubicMeter
#> precision: '0.1'
#> numericDomain:
#> references: nd.5
#> - id: att.8
#> attributeName: avesr94
#> attributeLabel: Average Species Richness for 1994
#> attributeDefinition: "The average species richness for the field in 1994\n "
#> storageType: float
#> measurementScale:
#> ratio:
#> unit:
#> standardUnit: radian
#> precision: '0.1'
#> numericDomain:
#> references: nd.5
#> - id: att.9
#> attributeName: avesr95
#> attributeLabel: Average Species Richness for 1995
#> attributeDefinition: "The average species richness for the field in 1995\n "
#> storageType: float
#> measurementScale:
#> ratio:
#> unit:
#> standardUnit: meter
#> precision: '0.1'
#> numericDomain:
#> references: nd.5
#> - id: att.10
#> attributeName: avesr96
#> attributeLabel: Average Species Richness for 1996
#> attributeDefinition: "The average species richness for the field in 1996\n "
#> storageType: float
#> measurementScale:
#> ratio:
#> unit:
#> standardUnit: inch
#> precision: '0.1'
#> numericDomain:
#> references: nd.5
#> - id: att.11
#> attributeName: MeanSR
#> attributeLabel: mean species richness
#> attributeDefinition: "the mean species richness from 1991 to 1996\n "
#> storageType: float
#> measurementScale:
#> ratio:
#> unit:
#> standardUnit: nanogram
#> precision: '0.1'
#> numericDomain:
#> references: nd.5
#> - id: att.12
#> attributeName: biomass
#> attributeLabel: Biomass
#> attributeDefinition: "The total biomass measured in this field\n "
#> storageType: float
#> measurementScale:
#> ratio:
#> unit:
#> customUnit: gramsPerSquareMeter
#> precision: '0.01'
#> numericDomain:
#> id: nd.6
#> numberType: real
#> bounds:
#> minimum:
#> exclusive: 'true'
#> minimum: '0'
#> - id: att.13
#> attributeName: sppm2
#> attributeLabel: Species Per Square Meter
#> attributeDefinition: "Calculated species per square meter\n "
#> storageType: float
#> measurementScale:
#> ratio:
#> unit:
#> customUnit: speciesPerSquareMeter
#> precision: '0.01'
#> numericDomain:
#> id: nd.7
#> numberType: real
#> bounds:
#> minimum:
#> exclusive: 'true'
#> minimum: '0'
#> - id: att.14
#> attributeName: time
#> attributeLabel: Time
#> attributeDefinition: "The time of day for this observation, 24 hour clock\n "
#> storageType: time
#> measurementScale:
#> dateTime:
#> formatString: hh:mm:ss.s
#> dateTimePrecision: '0.1'
#> dateTimeDomain:
#> id: dd.3
#> bounds:
#> minimum:
#> exclusive: 'true'
#> minimum: '15:00:00.0'
#> maximum:
#> exclusive: 'true'
#> maximum: '19:00:00.0'
#> id: at.1
## The first argument need not be an "eml" class, it could be a child element; e.g.
eml_get(eml$dataset$dataTable, "physical")
#> characterEncoding: ASCII
#> dataFormat:
#> textFormat:
#> numHeaderLines: '1'
#> attributeOrientation: column
#> simpleDelimited:
#> fieldDelimiter: \t
#> distribution:
#> online:
#> url: http://metacat.nceas.ucsb.edu/knb/servlet/metacat?action=read&docid=knb.46.1
#> objectName: CDR LTER-patterns among communities.txt
#> size:
#> unit: bytes
#> size: '1245'
# }