This user guide introduces various categories of SPy functions in a tutorial style. If you would like to test the commands presented in the guide, you should download the following sample data files, which are associated with a well-studied AVIRIS hyperspectral image collected over Indiana in 1992. [Landgrebe1998]
| File Name | Description |
|---|---|
| :download:`92AV3C.lan <data/92AV3C.lan>` | A small hyperspectral image chip (9.3 MB) in ERDAS/Lan format. The chip is 145x145 pixels from an AVIRIS image and contains 220 spectral bands. |
| :download:`92AV3GT.GIS <data/92AV3GT.GIS>` | A land-use ground-truth map for the hyperspectral image chip in ERDAS/Lan format. |
| :download:`92AV3C.spc <data/92AV3C.spc>` | An AVIRIS-formatted band calibration file for the image chip. |
Many of the examples presented in the guide are cumulative, with success of
commands issued depending on previous commands and module imports. While it is
generally not a good idea to import the contents of entire module namespaces,
for brevity, the examples in the user guide assume that from spectral import *
has been issued.
References
| [Landgrebe1998] | Landgrebe, D. Multispectral data analysis: A signal theory perspective. School of Electr. Comput. Eng., Purdue Univ., West Lafayette, IN (1998). |