LengthDistributionData: Length distribution data
In StoXProject/RstoxBase: Base StoX Functions
LengthDistributionData R Documentation
Length distribution data
Description
The LengthDistributionData model data contains the columns Station, Haul, SpeciesCategory, IndividualTotalLength, LengthResolution, WeightedNumber, MinHaulDepth, MaxHaulDepth, MinLayerDepth, MaxLayerDepth, LengthDistributionWeight, Cruise, EffectiveTowDistance, VerticalNetOpening, HorizontalNetOpening, TrawlDoorSpread and LengthDistributionType.
Details
Variable Description Unit Data type Example
Station Unique Station identifier None Character "2021105-1"
Haul Unique Haul identifier None Character "2021105-1-2"
SpeciesCategory The species category None Character "Herring"
IndividualTotalLength Total length (from snout to end of fin), given as the lower end of the interval of width given by LengthResolution cm Numeric 14.5
LengthResolution Resolution of IndividualTotalLength cm Numeric 0.5
WeightedNumber The number of individuals of the length group. None Numeric 12
MinHaulDepth Minimum depth of the haul (trawl headline) m Numeric 65
MaxHaulDepth Maximum depth of the haul (trawl headline) m Numeric 35
LengthDistributionWeight The weight of the WeightedNumber, always 1 None Numeric 1
LengthDistributionType The type of length distribution, one of "Normalized", "Standard" and "Percent" (see LengthDistribution) None Character "AreaNumberDensity"
Cruise Unique Cruise identifier (see StoxAcousticFormat for output from AcousticDensity and StoxBioticFormat for output from SweptAreaDensity) None Character "2021105"
EffectiveTowDistance Effective tow distance of the Haul nmi Numeric 1.5
DateTime UTC time at start of the EDSU or Station, stored as POSIXct ISO8601 Character 2020-09-09T01:02:03.456Z
Longitude Longitude at start of the EDSU or Station degree east Numeric 62.5
Latitude Latitude at start of the EDSU or Station degree north Numeric 5.1
Gear Identifier of the gear None Character "3270"
VerticalNetOpening Vertical span of the net m Numeric 23
HorizontalNetOpening Vertical span of the net m Numeric 105
TrawlDoorSpread Distance between the trawl doors. m Numeric 125
See Also
This data type is produced by LengthDistribution, RegroupLengthDistribution, LengthDependentLengthDistributionCompensation and RelativeLengthDistribution. LengthDistributionData is used in SumLengthDistribution with output SumLengthDistributionData and MeanLengthDistribution with output MeanLengthDistributionData. See DataTypes for a list of all StoX data types produced by RstoxBase
StoXProject/RstoxBase documentation built on Nov. 6, 2024, noon
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| LengthDistributionData | R Documentation |
Length distribution data
Description
The LengthDistributionData model data contains the columns Station, Haul, SpeciesCategory, IndividualTotalLength, LengthResolution, WeightedNumber, MinHaulDepth, MaxHaulDepth, MinLayerDepth, MaxLayerDepth, LengthDistributionWeight, Cruise, EffectiveTowDistance, VerticalNetOpening, HorizontalNetOpening, TrawlDoorSpread and LengthDistributionType.
Details
| Variable | Description | Unit | Data type | Example |
| Station | Unique Station identifier | None | Character | "2021105-1" |
| Haul | Unique Haul identifier | None | Character | "2021105-1-2" |
| SpeciesCategory | The species category | None | Character | "Herring" |
| IndividualTotalLength | Total length (from snout to end of fin), given as the lower end of the interval of width given by LengthResolution | cm | Numeric | 14.5 |
| LengthResolution | Resolution of IndividualTotalLength | cm | Numeric | 0.5 |
| WeightedNumber | The number of individuals of the length group. | None | Numeric | 12 |
| MinHaulDepth | Minimum depth of the haul (trawl headline) | m | Numeric | 65 |
| MaxHaulDepth | Maximum depth of the haul (trawl headline) | m | Numeric | 35 |
| LengthDistributionWeight | The weight of the WeightedNumber, always 1 | None | Numeric | 1 |
| LengthDistributionType | The type of length distribution, one of "Normalized", "Standard" and "Percent" (see LengthDistribution) | None | Character | "AreaNumberDensity" |
| Cruise | Unique Cruise identifier (see StoxAcousticFormat for output from AcousticDensity and StoxBioticFormat for output from SweptAreaDensity) | None | Character | "2021105" |
| EffectiveTowDistance | Effective tow distance of the Haul | nmi | Numeric | 1.5 |
| DateTime | UTC time at start of the EDSU or Station, stored as POSIXct | ISO8601 | Character | 2020-09-09T01:02:03.456Z |
| Longitude | Longitude at start of the EDSU or Station | degree east | Numeric | 62.5 |
| Latitude | Latitude at start of the EDSU or Station | degree north | Numeric | 5.1 |
| Gear | Identifier of the gear | None | Character | "3270" |
| VerticalNetOpening | Vertical span of the net | m | Numeric | 23 |
| HorizontalNetOpening | Vertical span of the net | m | Numeric | 105 |
| TrawlDoorSpread | Distance between the trawl doors. | m | Numeric | 125 |
See Also
This data type is produced by LengthDistribution, RegroupLengthDistribution, LengthDependentLengthDistributionCompensation and RelativeLengthDistribution. LengthDistributionData is used in SumLengthDistribution with output SumLengthDistributionData and MeanLengthDistribution with output MeanLengthDistributionData. See DataTypes for a list of all StoX data types produced by RstoxBase
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