ISIS Application Documentation
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Divide two cubes
| Overview | Parameters | Example 1 | Example 2 |
| U.S. Department of the Interior | U.S. Geological Survey ISIS | Privacy & Disclaimers | Astrogeology Research Program To contact us, please post comments and questions on the USGS Astrogeology Discussion Board To report a bug, or suggest a feature go to: ISIS Github File Modified: 02/21/2025 19:28:13 |
Parameter GroupsFiles
|
| U.S. Department of the Interior | U.S. Geological Survey ISIS | Privacy & Disclaimers | Astrogeology Research Program To contact us, please post comments and questions on the USGS Astrogeology Discussion Board To report a bug, or suggest a feature go to: ISIS Github File Modified: 02/21/2025 19:28:13 |
Files: NUMERATOR
Description
The numerator cube. All pixels in this cube will be divided by corresponding pixels in the denominator cube.
| Type | cube |
|---|---|
| File Mode | input |
| Filter | *.cub |
Files: DENOMINATOR
Description
The denominator cube. The number of bands in this cube must match the numerator cube or be exactly one. In the former case, a band-by-band division occurs. In the later, each numerator band is divided by the single denominator band.
| Type | cube |
|---|---|
| File Mode | input |
| Filter | *.cub |
Files: TO
Description
The output cube containing the results of the ratio. A NULL pixel will be output when either of the numerator or denominator pixels is special. Similarly, a NULL will be output if the denominator pixel is zero.
| Type | cube |
|---|---|
| File Mode | output |
| Pixel Type | real |
| Filter | *.cub |
Example 1Dividing one band by one band Description
This example presents dividing one band in a cube by a single band.
In this case, we divide band 5 by band 4 in peaks.cub and
generate a single band
output cube. Note that the file (peaks.cub) does not have to be
the same name for NUMERATOR and DENOMINATOR so long as the
spatial size (samples and lines) match between the given files.
Command Line
ratio
numerator=peaks.cub:5 denominator=peaks.cub:4 to=ratio.cub
|
| U.S. Department of the Interior | U.S. Geological Survey ISIS | Privacy & Disclaimers | Astrogeology Research Program To contact us, please post comments and questions on the USGS Astrogeology Discussion Board To report a bug, or suggest a feature go to: ISIS Github File Modified: 02/21/2025 19:28:13 |
Example 2Dividing multiple bands by one band Description
This example presents dividing all bands in a cube by an individual
band. In this case, the seven bands in peaks.cub are divided
by band 4 and the results output to ratio.cub.
Command Line
ratio
numerator=peaks.cub denominator=peaks.cub:4 to=ratio.cub
|
| U.S. Department of the Interior | U.S. Geological Survey ISIS | Privacy & Disclaimers | Astrogeology Research Program To contact us, please post comments and questions on the USGS Astrogeology Discussion Board To report a bug, or suggest a feature go to: ISIS Github File Modified: 02/21/2025 19:28:13 |