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Labeling

Use label sets to organize spectra or spatial regions for review, material identification, datasets, model training, or analysis background classes.

Manage classes​

When Label is active, use the class selector in the canvas toolbar to choose a class or No class. Choose Label settings at the bottom of that selector to create or edit class collections and classes.

Classes are shared with dataset and model workflows. Use names that remain meaningful during dataset preparation, training, and result review.

Create a label set​

  1. Open Label from the workflow rail.
  2. Expand an image-backed source.
  3. Expand Labels.
  4. Click Create label set.
  5. Enter a name and choose Exploratory, Finalized, or Annotation status.
  6. Click Create.

The new vector label set becomes the drawing target. Select another vector label set in the tree to make it the target instead.

Draw labels​

When Label is active, the canvas toolbar shows the pointer, Point selection tool, Lasso selection tool, and auto-label control. It also shows the class selector for normal label sets or a color selector for annotation sets.

Select the target label set and class, then use the point or lasso tool on the canvas. New labels appear inside that label set under the selected source.

Import labels​

Expand Labels and click Import labels. The dialog accepts:

  • Shapefiles, including matching .shp, .shx, .dbf, and .prj files.
  • GeoJSON or JSON.
  • KML.
  • TIFF labels, with optional .tif.aux.xml class metadata.
  • Supported ENVI label files.

Imported labels are attached to the selected image source and represented as label sets.

Control visibility​

Visibility controls appear when a label set applies to the active canvas. Use a label-set visibility control to show or hide the set, or expand it to control individual labels where supported.

Use the context menu​

Right-click a label or selection for the actions supported by its type. These can include:

  • Move labels to a label set or change a label-set status.
  • Assign a class or attribute.
  • Identify material and Plot identified material.
  • Add to spectral library.
  • Create mask.
  • Delete labels or label sets.

Raster label sets also expose raster-target configuration and pixel-editing actions.

Label with PCA​

Generate PCA from Explore > Analysis layers > Generate analysis layers > Principal components analysis (PCA). Select the completed PCA layer to open PCA · <name> in the Analysis tray.

Use the PCA chart to inspect clusters and create selections from related points. A completed selection is saved as a label for the source using the current class and label-status choices.