【文章內(nèi)容簡介】 he analytical process and graphical user interface is vital. Data set is organized into a ArcGIS geographic database as separate elements class (equivalent to the layer。 see map of GIS Zeiler, 1999). Each separate elements in such can be represented as SDSS analysis factor or limiting factor. Additional properties are added to the path of more effective elements to support analysis. For example: a wild flowers will be added to attribute the trail elements give users a choice of specific spring, summer or fall in standard of wild flowers. Based on the route arranged met wildflowers for perfect opportunity, very good, and good or bad. Because the objectivity of wildflower natural season, this option for winter is not optional. Each route was also give difficulty levels have simple, medium, difficult and hard to give users a choose specific they hope consumption much. These values from elevation gain, route, and system developer of slope experience. Deer, elk, the bear39。s probability model is used to give the user another option to evaluate different paths meet wildflowers opportunities. 4. system design In TrailFinder SDSS himself suitable for solving the space application of decisionmaking problem appear. Analysis results not only dependent on various elements and attributes of distribution, but also rely on in reflect user personal influence decisionmaking process involves value decision. SDSS framework allows users to explore a variety of options to help support their decisionmaking process. Since each park visitors may have different restrictions (for example: physical conditions or time limit) and preferred activities (., horseback riding, fishing, camping, ornamental flowers or wild animals), in system design contains a may be the decisionmaking process in the park visitors by considering the limitations and factor of prehensive set is very important. In addition, the system must allow users to their designated various factors of the importance of decision making. These are the user specified limits, factors and important level is used to a TrailFinder SDSS were developed to for advice on path classification and a row after the most can satisfy user standard route algorithm. Figure 2 shows a system design flow chart. Design a user friendly interface, it will throughout the application to an intuitive and informative guide users, it39。s way in application development in the important factor. The user interface should let users what they want to do and it is a relatively easy to municate with system requirements (Densham and Rushton, 1987, p. 77). ArcObjects open development environment custom Visual Basic programming is used for TrailFinder SDSS application design easy to expand dialogue window and analysis process. In a graphical user interface requires no GIS knowledge of the user can use system way is design. When customers start TrailFinder SDSS application, they would like to see introduced with a system of wele window. A group of limiting factors are given in this dialog for customers to choose. The first limit to provide users with a walk, ride horses, and in select three options or drive travel mode. If a user choose to walk, all the route will be included into the analysis. If the user specifies the way, only a horse riding will be analyzed. If the drive by choice, only for car open highway will be considered. The user can also click View Trail Map connection to browse includes all the Trail, in GSMNP riding route, good road Map. Next the user choice they want to experience the type of route. They chose a simple, medium, difficult, or difficult route difficulty level and specify they want to travel many miles on schedule. In the application of TrailFinder decision support analysis w