地理信息系统开发工具GISDK使用手册英文版第一部分 etoGISDKHelp.doc

1 Preface
TransCAD®, out of the box, is a very powerful and puter program. But, if you are an advanced user or a programmer, you may want to do more or different things that are offered by the standard user interface. The Geographic Information System Developer’s Kit (GISDK) provides you with a tool kit that you can use to get outside the box and customize TransCAD in any way you desire.
GISDK(tm) is a collection of software tools and documentation e with TransCAD and make it possible to automate repetitive TransCAD tasks, create user designed add-ins, integrate other programs, or build custom applications. GISDK also makes it possible to call the TransCAD functionality from other software applications.
The ponent of the GISDK is a programming language called Caliper Script(tm). This is an easy-to-learn, BASIC-like programming language that provides a way to interact with the TransCAD program and data. Caliper Script is a programming language that is powerful, but easy to use. It is more flexible and powerful that the languages provided with other transportation software. Also code written in other languages such as C or FORTRAN can be intermixed with GISDK programs written in Caliper Script, patibility with existing software.
The primary use of the Caliper Script is to interact with TransCAD. There are over one thousand GISDK functions in TransCAD, all of which can be called from Caliper Script. These functions give users a wide variety of tools that range from managing maps and display characteristics to creating, accessing, updating and analyzing data and data structures, including matrices works. In addition, the GISDK functions can be called using Windows Automation, since TransCAD can act as both an Automation Server and Client. TransCAD for the Web uses this way to write code that can be run by a web browser and call TransCAD to provide maps, driving directions and other services. Caliper Script also provides the capability to plete, custom Windows interf