Example: JPEG2000 Files for Tiling

The tiling example provided in the IDL distribution takes a 5000 by 5000 pixel JPEG file containing an aerial photograph of Chicago's O'Hare International Airport and creates a JPEG2000 file from the data. This file type provides inherent support for image tiles.

Example Code
See tilingjp2_doc.pro in the examples/doc/objects subdirectory of the IDL installation directory for the tiling application code. Run the example procedure by entering tilingjp2_doc at the IDL command prompt or view the file in an IDL Editor window by entering .EDIT tilingjp2_doc.pro.

Note
The first time you run this application, it generates the JPEG2000 file. This might take a noticeable amount of time, depending on your system speed. However, once the JPEG2000 image is created, this file will be used instead of being recreated.

The following figure shows the O'Hare image. When the application opens, the view is positioned in the upper-left corner of the full-resolution image.