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Mainframe Data to

By Carl G. Shea and Christopher R. Fleet


Cross classification is a popular method for trip generation analysis. The procedure has been well documented and has been used in a number of urban transportation studies.’z Mainframe computer programs have been available for some time to analyze data, to develop the cross-classification matrix, and to solve for estimated trip productions. ’ Statistical packages for mainframes, such as SPSS, can also produce cross tabulations of trip and socioeconomic data. The procedure lends itself well to microcomputer applications using a commercially available spreadsheet program such as Lotus 1-2-3. * Some front-end work must be done to create a data file (or files) of socioeconomic and trip data in a format that can be read into the spreadsheet program. The most common case is a mainframe data file from an origin-destination survey that must be downloaded to the microcomputer and then formatted to fit the spreadsheet requirements. The downloading and formatting process will be described first, followed by an explanation of the trip generation technique using a spreadsheet application

Year: 2014
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