ERDAS - Layer Stack
2
Technical Support Procedures Layer Stack The layer stack function is useful for placing layers one on top of the other. It is especially useful now that IKONOS satellite data are being released in full-scene, one-layer-per-image files. Also, Landsat 7 files often come in one-band-per-image files, and this procedure will work as well, but keep in mind that Landsat 7 band 6 (thermal) typically has 60-meter resolution, and the panchromatic band typically has 15-meter resolution, while the other bands have 30-meter resolution. If the panchromatic band is stacked into the output file, bands 1 through 7 will be resampled to 15-meter pixel size, some spectral definition will be lost, and the file size more than quadrupled. For Landsat 7 data, layer stack bands 1 through 5 and band 7. Keep the panchromatic band and band 6 as separate files. Tip: When layer-stacking Landsat 7 data, stack bands 1 through 5 and band 7. Keep the panchromatic band and band 6 as separate files. Use this process to stack the layers into one image. 1. In ERDAS IMAGINE, select the Interpreter icon on the main icon panel. 2. Select Utilities from the drop-down menu. 3. Select Layer Stack. 4. In the Layer Stack dialog, enter the name of the first file in the Input File line. 5. Once a name is entered, click Add. You will see the name of the file appear in the gray dialog list box. 6. Continue entering and adding each of your files. 7. Type a name in the Output File line, and select an output file type. Select your output data type. Generally, it should be the same as your input data types. 8. Select the Ignore Zero in Stats box to activate this option. 9. Click OK. The process will run. Your layers are now stacked in one image. Leica Geosystems GIS & Mapping gis.leica-geosystems.com Technical Support [email protected] Page 1 of 1 TM Last Updated: 3/29/2004 LayerStack
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Transcript of ERDAS - Layer Stack
Technical Support Procedures Layer Stack The layer stack function is useful for placing layers one on top of the other. It is especially useful now that IKONOS satellite data are being released in full-scene, one-layer-per-image files. Also, Landsat 7 files often come in one-band-per-image files, and this procedure will work as well, but keep in mind that Landsat 7 band 6 (thermal) typically has 60-meter resolution, and the panchromatic band typically has 15-meter resolution, while the other bands have 30-meter resolution. If the panchromatic band is stacked into the output file, bands 1 through 7 will be resampled to 15-meter pixel size, some spectral definition will be lost, and the file size more than quadrupled. For Landsat 7 data, layer stack bands 1 through 5 and band 7. Keep the panchromatic band and band 6 as separate files.
Tip: When layer-stacking Landsat 7 data, stack bands 1 through 5 and band 7. Keep the panchromatic band and band 6 as separate files.
Use this process to stack the layers into one image.
1. In ERDAS IMAGINE, select the Interpreter icon on the main icon panel.
2. Select Utilities from the drop-down menu.
3. Select Layer Stack.
4. In the Layer Stack dialog, enter the name of the first file in the Input File line.
5. Once a name is entered, click Add. You will see the name of the file appear in the gray dialog list box.
6. Continue entering and adding each of your files.
7. Type a name in the Output File line, and select an output file type. Select your output data type. Generally, it should be the same as your input data types.
8. Select the Ignore Zero in Stats box to activate this option.
9. Click OK. The process will run. Your layers are now stacked in one image.
Leica Geosystems GIS & Mapping
gis.leica-geosystems.com Technical Support
Page 1 of 1
TM
Last Updated: 3/29/2004 LayerStack
Leica Geosystems GIS & Mapping gis.leica-geosystems.com
Technical Support [email protected]
Page 2 of 2
TM
Last Updated: 3/29/2004 LayerStack
