Main window

Import ASTER

Import Map

Import General Raster

Import Table Wizard

Select a file:

Select the file that you wish to import.

Directories:

If necessary, change the current directory.

Drives:

If necessary, change the current drive.

Import format:

 ASTER (1A/1B)

When you select another Import format, please refer to the other Import topics in the Help; you can click one of the links in the header of this topic.

Output file name:

Type a name for the output ILWIS object collection. Do not specify an extension; ILWIS will add its own extensions. The imported data will be part of the output object collection.

Show:

Select this check box when you like to directly open the resulting object collection.

Use Radiances (Wm^-2sr^-1�m^-1):

For ASTER level 1A images:

• Select this check box if you want to convert the raw Digital Numbers of the ASTER HDF file to radiometric corrected radiance values.
• Clear this check box if you want to convert the raw Digital Numbers of the ASTER HDF file to sensor calibrated DN values.

For ASTER level 1B images:

• Select this check box if you want to convert the radiometrically corrected DN values of the ASTER HDF file to radiance values.
• Clear this check box if you want to use the radiometrically corrected DN values of the ASTER HDF file.

Notes:

• Sensor calibrated DN values are not the actual digital unprocessed numbers of the file but radiometric corrected radiance values scaled back into an appropriate range.
• For more technical information about radiometric and geometric corrections of ASTER images refer to ASTER Import : Radiometric and geometric corrections (technical information).

Convert to ILWIS data format:

Select this check box to perform a genuine import and translate the external file to an ILWIS format:

• the external data will be translated into ILWIS file formats: ILWIS object definition files (e.g. .MPR) as well as ILWIS data files will be created;
• you can view the imported data, calculate with it, use it in ILWIS operations, etc.;
• the imported data can be edited in ILWIS.

Clear this check box when you wish to keep the external file in its original format (Use As):

• the external data will not be translated into ILWIS file formats: only ILWIS object definition files (e.g. .MPR) will be created; as the same data file will not appear twice on your hard disk in different formats, you will save some hard disk space in this way;
• you can view the imported data, calculate with it, use it in ILWIS operations, etc.;
• the original file can not be edited in ILWIS;

Necessary service objects like georeferences, etc. will always be imported into the ILWIS format.