Subsequent lines for each band are interleaved in similar fashion. This format provides a compromise in performance between spatial and spectral processing and is the recommended file format for most ENVI processing tasks. The ENVI raster format does not support bit integer signed or unsigned data types. Routine A scalar string denoting the IDL procedure that will be run when the Toolbox item is double-clicked.
Keywords Keywords are applied only during the initial creation of the object. AddExtension , 'Routine 1' , 'myroutine1. AddExtension , 'Routine 2' , 'myroutine2. Set this keyword to one of the following values: Integer: If you set this keyword to an integer beginning with 0 for the first menu item , the new item will appear after the item in that position. String: The new item will appear after the item that you specify.
Strings are not case-sensitive. Set this keyword to one of the following values: Integer: If you set this keyword to an integer beginning with 0 for the first menu item , the new item will appear before the item in that position. String: The new item will appear before the item that you specify. ERROR Set this keyword to a named variable that will contain any error message issued during execution of this routine.
With Landsat-8 files, the reflectance gains have been scaled by the sine of the sun elevation, as follows:. An array of reflectance offset values. With Landsat-8 files, the reflectance offsets have been scaled by the sine of the sun elevation, as follows:.
Indicates which band numbers to automatically load into the Data Manager Greyscale or R , G , and B fields every time the file is opened. By default, a new image is automatically loaded when a file that has default bands defined in its header is opened. If only one band number is used, then ENVI loads a greyscale image.
The type of stretch to use when ENVI displays the image. The choices are as follows:. Path and filename of a DEM associated with the image. The ENVI-defined file type, such as a certain data format and processing result. Lists full-width-half-maximum FWHM values of each band in an image. Units should be the same as those used for wavelength and set in the wavelength units parameter. Geographic corners for non-georeferenced files.
Enter one to four locations. Each location must contain the following items, in this order:. The number of bytes of embedded header information present in the file. ENVI skips these bytes when reading the file. The default value is 0 bytes. If the header file contains a coordinate system string field, any existing projection info line information is ignored. The value that, when divided into your data, would scale it from reflectance. This information is especially useful when looking for a way to open a specific file.
If you already have ENVI installed on your computer, you can check which file extensions it supports and look for the data you need in this specific format or to what format you should convert the data so that you can open them in the ENVI.
By far the most safe way is to download ENVI directly from the developers's website. If you are going to download the ENVI from a website that offers a database of downloadable software, you have to reckon with the fact that when you install it on your computer, you will also install the unwanted extras. Please, pay special attention to this. File extensions are not normally displayed to users. Next, select the View and find the option "Hide extensions for known file types".
The option should be deselected cleared and confirmed with OK.
0コメント