IDL Wavelet Toolkit User's Guide

26 Chapter 2: Using the IDL Wavelet Toolkituse the Group All button within the ASCII_TEMPLATE dialog to connect all of thecolumns into one field.Binary FilesSelect this menu item or button to import data from a binary data file. After choosingthe file using the Select Import File dialog, you can specify the particular format forthe file using the BINARY_TEMPLATE dialog. See “BINARY_TEMPLATE” (IDLReference Guide) for more information.The BINARY_TEMPLATE routine handles raw binary files consisting of headersand multiple data fields. The dialog consists of a Binary Template window where youcan define various fields within the file. Each field will be imported into the WaveletToolkit as a separate variable.Image FilesSelect this menu item or button to import an image file. The functionDIALOG_READ_IMAGE is used to select the image file. For files with multipleimages you can choose the particular image you wish to import. See“DIALOG_READ_IMAGE” (IDL Reference Guide) for more information.For TrueColor (24-bit) images, you will then be asked how you wish to convert thethree channels into a single two-dimensional image. You have the option to scale thedata into an intensity from 0–255, quantize the 24-bit colors down to 256 colors, orsplit the three channels into separate red, green, and blue images.WAV Audio FilesSelect this menu item or button to import a .WAV (RIFF) audio file as a onedimensionalvector. The file must be in uncompressed PCM format. Multiplechannels are imported as separate variables, one for each channel.IDL Command LineYou can also import data directly from the IDL> command prompt using theWV_IMPORT_DATA command:WV_IMPORT_DATA, variablewhere variable is either a data vector or array, or a structure of data tags (see“WV_IMPORT_DATA” on page 96 for tag information).Importing Data into the Wavelet ToolkitIDL Wavelet Toolkit