![]() ![]() Methods, or actions, that you can perform with the raster.Properties that are common to all rasters.Refer to the ENVIRaster help topic to see: You now have an ENVIRaster object called Raster. For HDF5 and similar formats, you may also need to set the DATASET_NAME keyword to ENVI::OpenRaster. ![]() For some formats, you may need to set the EXTERNAL_TYPE keyword to ENVI::OpenRaster. See Supported File Types for a list of formats and sensor products that ENVI supports by default. ![]() Pass the file reference to the ENVI::OpenRaster method to open the data in ENVI: Raster = e. In all of these cases, you are only creating string variables that reference the data location. Network: resource = '\\MyServer\image.dat'ĪrcGIS image service: resource = ' OGC server: resource = '.' To access data files from remote locations, create a variable that contains a string with the direct URL or Universal Naming Convention (UNC) path to the dataset. The ENVI::GetTemporaryFilename() method manages file names and paths for you.The IDL FILEPATH function is preferred in scripts that need to support cross-platform file paths.Use the IDL FILE_SEARCH function to return a string array that contains the names of all files matching the input path specification.The term fully qualified means that you have specified its exact name and path so that it cannot be mistaken for any other file on that system. Create a variable that contains a string with a fully qualified filename.Once you start the ENVI application, you have several options to access data files from a disk on a local workstation: This topic describes some of the basic operations you can perform with raster data: Rasters have metadata that describe their unique properties, and they can be georeferenced to different coordinate systems. Many different data processing tasks are available for rasters such as classification, principal components analysis, and mosaicking. Images, or rasters, are the most common data in ENVI. ![]()
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