This is an APL/II workspace that contains functions for the analysis transportation systems. It is intended for illustrative purposes but may be useful for serious work. All the capabilities of the APL/II system are available and all of the authors functions may be viewed in the editor as they are unlocked.
The emphasis is on numerical techniques. The models and the approach are not mode specific. For more information load the TAS workspace and examine the menus, LESSONS etc. !! Note: when in TAS ws be sure that you are in lower case and Ins mode !!. Otherwise the menu selection function MM will not work properly.
APL is an array oriented language that is closely allied to mathematics. Its power coms from its use of simple symbols to represent primitive functions, its ability to allow the user to define new functions and its convenience in automatically selecting data types and memory requirements.
Once a person is familiar with a few primitive it is easy to do useful work and eventually build a repetoir that utilizes some of the more exotic feature of the language. The APL editor and some locally defined function s and variables have been used to develop 'mynet'
It is not necessary to have a detailed knowledge of APL to use the workspace, but basic familarity with the language, the behavior of th session manager and editor will facillitate use. The session manager was designed for keyboard use. A mouse can be used for pointing and will cause execution of items listed in the menus.
The 'TEXT' keyboard is used and TAS runs in its own window. However the APL symbols are not visible unless a apecial character set is loaded. The APL character set is displayed if the full screen version is used. Full screen is obtained by [Alt Enter] or clicking on the box icon with the four arrows on the tool bar at the top of the window. Toggle between full screen and a window using [Alt Enter] keys.
You can change character sets in the window, but not in full screen. I use the 8 x 12 character size.
A work LOG facility is provided for saving results of analysis.