Glossary

What each layer shows, a quick guide to SFF, SAM and more.

Which way each layer runs, and whether it's evidence. Everything else is in Knowledge base.

Layer	What it does	Values
SFF Spectral Feature Fitting	fits a mineral's absorption features one by one; the most precise match in the platform. Needs hyperspectral data (like EMIT)	closer to 1 is better
SAM Spectral Angle Mapper	matches the whole spectrum by angle to a reference; runs on multispectral data too	closer to 1 is better
GSI Geological Spectral Indices	band ratios for a mineral group or lithology	higher is more; scale isn't 0 to 1
AI Spectral Targeting	flags pixels that stand out, without naming a mineral	smaller is a stronger anomaly
AI Clusters	groups spectrally similar pixels; follows the surface, not the bedrock	Hint, general AOI overview, potential search for anomalous locations
Extracted Edges	Lineaments generated from a hillshade; it has limitations if visible color changes on hillshade are a noise not geological contacts	higher gives fewer, sharper
FCC False Color Composite	shows alteration and lithology contacts	orientation
Magnetometry	TMI and its products – Global EMAG provided in the platform. User's data can be sent to TerraEye to process it the same way	read contrasts, not absolutes
Gravity	Global Gravity Model provided in the platform.	regional only
Geochemistry	your samples as points, with a gradient per element	User's data required – usefulness dependent on your data.
The four masks	vegetation, water, snow and clouds mask their high values; non-bare soil scores bareness.	—

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Back to the workflow, or read up on a method in Knowledge base.