Remote Sensing Notes edited by Japan Association of Remote Sensing © JARS 1999. GIS Work Book written by Shunji Murai © Shunji Murai 1999. Produced by National Space Development Agency of Japan (NASDA) / Remote Sensing Technology Center of Japan (RESTEC). Prepared by Asian Center for Research on Remote Sensing (ACRoRS) in Asian Institute of Technology (AIT). INSTRUCTION