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ArcIMS Author displays JPEG, TIF, GIF, BMP, and PNG files. See the "Using ArcIMS" book for a list of image formats supported by ArcIMS.
Other image formats that have a standard file extension can be added to ArcIMS Author and listed in the legend but not displayed in the map. The images cannot be displayed in ArcIMS Author, but you can view the image as an Image MapService.
Images without standard file extensions must be manually added to the map configuration file. See the IMAGEWORKSPACE element in the "ArcXML Programmer’s Reference Guide" for more details on how to add an image.
World files are required for all image formats that use world files. A world file contains parameters to transform raster rows and columns into real-world coordinates. The world file must use a three letter extension, such as *.tfw, and it cannot have scientific notation. See ArcIMS Help for details on world files.
ArcIMS Author may have limitations displaying large images. To determine if you have encountered this limitation, use the ArcIMS Author Message Console to check for 'Out of Memory' error messages. Increase the memory parameters for the Java VM to avoid these errors. See the Frequently Asked Questions (FAQs) in ArcIMS Help for information on 'Out of Memory' errors.
To take advantage of the Java Advanced Imaging (JAI) libraries for a performance increase when viewing images, add to the environment variable called Path, or create it if it doesn’t already exist. Point it to the bin folder of the JRE installation; for example, c:\Program Files\Javasoft\Jre\1.2\bin.
ArcIMS supports image catalogs and Grids. You can also specify an ArcIMS Image Directory which allows you to add all images from a particular folder. See the IMAGEWORKSPACE element in the ArcXML Programmer’s Reference Guide for more details. The ArcIMS Programmer's Reference Guide is available by clicking on the link below, and another click on 'ArcXML'.
ArcIMS supports ArcSDE raster data. You must manually edit your map configuration file to include references to ArcSDE raster data in the LAYER element.
Support for ArcSDE raster data includes: