Fragstats landscape metrics

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Fragstats landscape metrics

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The table below provides details of the 100+ metrics supported by Fragstats. Many of these measures are very similar, and can be considered as highly correlated. Full details of the computations associated with each metric can be found in the Fragstats documentation. Functions of this type can also be found in other packages such as the Pattern functions of SAGA, PASSaGE and the TEXTURE set of image transform operators in Idrisi.

Landscape metrics

Area/density/edge metrics

Patch Area

Patch Perimeter

Radius of Gyration

Total (Class) Area

Percentage of Landscape

Number of Patches

Patch Density

Total Edge

Edge Density

Landscape Shape Index

Normalized Landscape Shape Index

Largest Patch Index

Patch Area Distribution

Radius of Gyration Distribution

Total Area

Number of Patches

Patch Density

Total Edge

Edge Density

Landscape Shape Index

Largest Patch Index

Patch Area Distribution

Radius of Gyration Distribution

Shape metrics

Perimeter-Area Ratio

Shape Index

Fractal Dimension Index

Linearity Index

Related Circumscribing Circle

Contiguity Index

Perimeter-Area Fractal

Perimeter-Area Ratio Distribution

Shape Index Distribution

Fractal Index Distribution

Linearity Index Distribution

Related Circumscribing Circle Distribution

Contiguity Index Distribution

Perimeter-Area Fractal Dimension

Perimeter-Area Ratio Distribution

Shape Index Distribution

Fractal Index Distribution

Linearity Index Distribution

Related Circumscribing Circle Distribution

Contiguity Index Distribution

Core area metrics

Core Area

Number of Core Areas

Core Area Index

Average Depth Index

Maximum Depth Index

Total Core Area

Core Area Percentage of Landscape

Number of Disjunct Core Areas

Disjunct Core Area Density

Core Area Distribution

Disjunct Core Area Distribution

Core Area Index Distribution

Total Core Area

Number of Disjunct Core Areas

Disjunct Core Area Density

Core Area Distribution

Disjunct Core Area Distribution

Core Area Index Distribution

Isolation/proximity metrics

Proximity Index

Similarity Index

Euclidean Nearest-neighbor Distance

Functional Nearest-neighbor Distance

Proximity Index Distribution

Similarity Index Distribution

Euclidean Nearest-neighbor Distance Distribution

Functional Nearest-neighbor Distance Distribution

Proximity Index Distribution

Similarity Index Distribution

Euclidean Nearest-neighbor Distance Distribution

Functional Nearest-neighbor Distance Distribution

Contrast metrics

Edge Contrast Index

Contrast-Weighted Edge Density

Total Edge Contrast Index

Edge Contrast Index Distribution

Contrast-Weighted Edge Density

Total Edge Contrast Index

Edge Contrast Index Distribution

Contagion/interspersion metrics

Percentage of Like Adjacencies

Clumpiness Index

Aggregation Index

Interspersion & Juxtaposition Index

Mass Fractal Dimension

Landscape Division Index

Splitting Index

Effective Mesh Size

Percentage of Like Adjacencies

Contagion

Aggregation Index

Interspersion & Juxtaposition Index

Landscape Division Index

Splitting Index

Effective Mesh Size

Connectivity metrics

Patch Cohesion Index

Connectance Index

Traversability Index

Patch Cohesion Index

Connectance Index

Traversability Index

Diversity metrics

Patch Richness

Patch Richness Density

Relative Patch Richness

Shannon’s Diversity Index

Simpson’s Diversity Index

Modified Simpson’s Diversity Index

Shannon’s Evenness Index

Simpson’s Evenness Index

Modified Simpson’s Evenness Index