DwC Mapping - MIXS:0000093 elev

[tucotuco]

Field	Value
subject_id	http://rs.tdwg.org/dwc/terms/verbatimElevation
subject_definition	The original description of the elevation (altitude, usually above sea level) of the Location.
subject_usage_notes
subject_examples	100-200 m
predicate_id	skos:broadMatch
object_id	MIXS:0000093
object_label	elev
object definition	Elevation of the sampling site is its height above a fixed reference point, most commonly the mean sea level. Elevation is mainly used when referring to points on the earth's surface, while altitude is used for points above the surface, such as an aircraft in flight or a spacecraft in orbit
object source	https://github.com/GenomicsStandardsConsortium/mixs-legacy/blob/master/mixs5/mixs_v5.xlsx
comment	Going from MIxS to Darwin Core, the predicate would be skos:exactMatch, as the pattern in MIxS will always be acceptable on the Darwin Core side.

[raissameyer]

Should this term also be mapped to dwc:maximumElevationInMeters and dwc:minimumElevationInMeters, following the same structure as the depth mappings in #13 ?

We should think about what criteria decide whether we map terms with multiple possible matches to only one or all.

[tucotuco]

It could be, but it is an indirect mapping with a potential calculation, whereas the verbatimElevation is an exactMatch.

[raissameyer]

Additional mapping options

Field	Value
subject_id	http://rs.tdwg.org/dwc/terms/minimumElevationInMeters
subject_definition	The lower limit of the range of elevation (altitude, usually above sea level), in meters.
subject_value_syntax - expected_value - unit	{float} - measurement value - meter
subject_examples	-100, 802
predicate_id	skos:narrowMatch
syntax_predicate_id	skos:narrowMatch
object_id	MIXS:0000093
object_label	elev
object definition	Elevation of the sampling site is its height above a fixed reference point, most commonly the mean sea level. Elevation is mainly used when referring to points on the earth's surface, while altitude is used for points above the surface, such as an aircraft in flight or a spacecraft in orbit
object_value_syntax - expected_value - unit	{float} {unit} - measurement value - meter
object source	https://github.com/GenomicsStandardsConsortium/mixs-legacy/blob/master/mixs5/mixs_v5.xlsx
comment
syntax_comment	The DwC example does not include a unit, only a {float}, while MIxS expects the input to be {float} {unit}

and

Field	Value
subject_id	http://rs.tdwg.org/dwc/terms/maximumElevationInMeters
subject_definition	The upper limit of the range of elevation (altitude, usually above sea level), in meters.
subject_value_syntax - expected_value - unit	{float} - measurement value - meter
subject_examples	-205, 1236
predicate_id	skos:narrowMatch
syntax_predicate_id	skos:narrowMatch
object_id	MIXS:0000093
object_label	elev
object definition	Elevation of the sampling site is its height above a fixed reference point, most commonly the mean sea level. Elevation is mainly used when referring to points on the earth's surface, while altitude is used for points above the surface, such as an aircraft in flight or a spacecraft in orbit
object source	https://github.com/GenomicsStandardsConsortium/mixs-legacy/blob/master/mixs5/mixs_v5.xlsx
comment
syntax_comment	The DwC example does not include a unit, only a {float}, while MIxS expects the input to be {float} {unit}

[raissameyer]

As we have now decided to capture the syntax separately from the semantics, we can go back to the original mapping predicate skos:exactMatch for dwc:verbatimElevation and MIxS:elev

[raissameyer]

Suggested syntax predicate for the mapping above https://github.com/tdwg/gbwg/issues/15#issue-805156813

Field	Value
subject_id	http://rs.tdwg.org/dwc/terms/verbatimElevation
subject_value_syntax - expected_value - unit	verbatim
syntax_predicate_id	skos:relatedMatch
object_id	MIXS:0000093
object_value_syntax - expected_value - unit	{float} {unit} - measurement value - meter
syntax_comment	The DwC term expects verbatim input (so anything really), whereas MIxS expects {float} {unit} in meter