The USGS Spectral Data Type.
| Constant | Value | Description |
|---|---|---|
| measured | 0 | Directly measured spectra. |
| convolved | 1 | Spectra convolved to an specific spectrometer. |
| resampled | 2 | Spectra resampled to response functions of an specific spectrometer. |
| oversampled | 3 | Spectral interpolated to higher number of channels. |