Displayed spectra

The Displayed Spectra table and controls lists the spectra signatures available for viewing in the Spectra plot graph. The table reports the spectra ID number, name, and color. The Displayed Spectra controls allow you to show, hide, and change the color of the spectra plot lines and to choose new samples from a Spectra Library and new areas of interest.

ID:

Assigns a number to spectra signatures in ascending chronological order.

Name:

Lists the names of each spectra signature.

Color:

Lists the plot line colors for each spectra signature in the table. You can change the color of a signature plot line in the graph.

Show:

Lets you show or hide a signature plot line.

From Spectra File:

Opens the Select Spectra From Library window. You can change spectra libraries and choose more spectra signatures.

From Regions:

Imports spectra listed in the Spectra Extraction window table and makes them available for viewing in the Spectra Plotting window.

From Image:

Imports spectra from the cursor position within the view pane and adds the spectra values to the table, making them available for viewing in the Spectra Plotting window.

Clear Spectrum:

Clears a selected spectrum from the Display Spectra table.

Clear All:

Clears all of the spectra signatures listed in the Display Spectra table.

Save Spectra:

Opens the Save Spectra to Library window, where you can add a spectra to a Spectra library.

Window Size Around Cursor:

Lets you choose a kernel size for the sample taken in the view pane at your cursor location.

Spectra Quantity to Sample:

When your data contains radiometric transformation metadata, the transformed spectra are listed in the Spectra Quantity to Sample box. You can choose which of the transformation quantities you want to sample from the list.

The possible radiometric transformations are:

• Uncalibrated digital number (DN) values
• Non-physical adjustment
• At-sensor (unscaled) radiance
• Scene radiance
• Scene irradiance
• Reflectance

Hyperspectral Image:

Let you work with hyperspectral image data.

Wavelength First:

Lets you adjust the starting wavelength value upward from the default hyperspectral wavelength, read from the file data.

Last:

Lets you adjust the last wavelength value downward from the default hyperspectral wavelength, read from the file data.

Mask:

Allows you to choose bitmap masks in your source files.