A dataset containing morphometric measurements and biological data for two species of Aphanopus (A. carbo and A. intermedius).
Format
A data frame with 14 variables:
- Species
Species name (Acar or Aint)
- ID
Unique identifier for the otolith (from image filename)
- SL
Standard Length of the fish (mm)
- OA
Otolith area (pixels)
- OP
Otolith perimeter (pixels)
- OL
Otolith maximum length (pixels)
- OW
Otolith maximum width (pixels)
- Roundness
Shape index: (4 * Area) / (pi * Length^2)
- FormFactor
Shape index: (4 * pi * Area) / Perimeter^2
- Circularity
Shape index: Perimeter^2 / Area
- Rectangularity
Shape index: Area / (Length * Width)
- Ellipticity
Shape index: (Length - Width) / (Length + Width)
- AspectRatio
Shape index: Length / Width
- Units
Measurement units (px)