Variables Description
sample_name Name of the single diaspore image extracted by Traitor. Unique for each diaspore.
image_name Image file name in image dataset.
scientificName Accepted species name.
scientificNameAuthorship Author of the species accepted name.
spec.name.ORIG Species scientific name in the data source.
genus Taxonomic genus.
family Taxonomic Family.
missing_structures Structures that are not present in the diaspore image.
length the longest dimension of the diaspore in millimetres (mm)
width the widest axis perpendicular to the length axis in millimetres (mm)
aspect_ratio
Proportional relationship between width and length. Dimensionless. Formula: aspect ratio = width ÷ length.
area Area of diaspore contour in square millimetres (mm2).
perimeter Perimeter of diaspore contour in millimetres (mm).
surface_structure
Shape descriptor that describes the roughness of a diaspore’s surface. The maximum value is 1 (completely smooth), and surface is increasingly rougher as the value approaches 0. Dimensionless. Formula: surface structure = perimeter (convex hull) ÷ perimeter.
solidity
Shape descriptor that describes the overall concavity of a diaspore. The maximum value is 1 (completely convex shape), and lower values indicate greater extent of concavity and/or irregular boundaries. Dimensionless. Formula: solidity = area (convex hull) ÷ area.
circularity
Shape descriptor that describes the degree of similarity to a perfect circle. The maximum value is 1 (perfect circle), and the shape is increasingly less circular as the value approaches 0. Formula: circularity = 4π × area / perimeter2.
R_median Linearized median pixel value for the red (R) channel within the sRGB colour space. Range 0 (absence of channel) to 255 (maximum value).
G_median Linearized median pixel value for the green (G) channel within the sRGB colour space. Range 0 (absence of channel) to 255 (maximum value).
B_median Linearized median pixel value for the blue (B) channel within the sRGB colour space. Range 0 (absence of channel) to 255 (maximum value).
R_mean Linearized mean pixel value for the red (R) channel within the sRGB colour space. Range 0 (absence of channel) to 255 (maximum value).
G_mean Linearized mean pixel value for the green (G) channel within the sRGB colour space. Range 0 (absence of channel) to 255 (maximum value).
B_mean Linearized mean pixel value for the blue (B) channel within the sRGB colour space. Range 0 (absence of channel) to 255 (maximum value).
sR_median Median pixel value for the red (R) channel. sRGB colour space: range 0 (absence of channel) to 255 (maximum value).
sG_median Median pixel value for the green (G) channel. sRGB colour space: range 0 (absence of channel) to 255 (maximum value).
sB_median Median pixel value for the blue (B) channel. sRGB colour space: range 0 (absence of channel) to 255 (maximum value).
sR_mean Mean pixel value for the red (R) channel. sRGB colour space: range 0 (absence of channel) to 255 (maximum value).
sG_mean Mean pixel value for the green (G) channel. sRGB colour space: range 0 (absence of channel) to 255 (maximum value).
sB_mean Mean pixel value for the blue (B) channel. sRGB colour space: range 0 (absence of channel) to 255 (maximum value).
rgb_0_r Median pixel value for the red (R) channel of the second most dominant colour. sRGB colour space: range 0 (absence of channel) to 255 (maximum value).
rgb_0_g Median pixel value for the green (G) channel of the second most dominant colour. sRGB colour space: range 0 (absence of channel) to 255 (maximum value).
rgb_0_b Median pixel value for the blue (B) channel of the second most dominant colour. sRGB colour space: range 0 (absence of channel) to 255 (maximum value).
rgb_1_r Median pixel value for the red (R) channel of the most dominant colour. sRGB colour space: range 0 (absence of channel) to 255 (maximum value).
rgb_1_g Median pixel value for the green (G) channel of the most dominant colour. sRGB colour space: range 0 (absence of channel) to 255 (maximum value).
rgb_1_b Median pixel value for the blue (B) channel of the most dominant colour. sRGB colour space: range 0 (absence of channel) to 255 (maximum value).
rgb_0_frac Fraction of pixels assigned as the second most dominant colour. Range 0 to 0.5.
rgb_1_frac Fraction of pixels assigned as the most dominant colour. Range 0.5 to 1.
x_0 – x_49 x values for each of the 50 xy coordinates that comprise the diaspore contour after standardization for size invariance. Columns x_0 to x_49.
y_0 – y_49 y values for each of the 50 xy coordinates that comprise the diaspore contour after standardization for size invariance. Columns y_0 to y_49.