Từ năm 1994, thành phố Philadelphia đã được làm việc để đưa công nghệ GIS để mức độ của các nhà hoạch định khu vực, hy vọng để bắt đầu với họ một PPGIS. Mặc dù đã thành công trong sự nhiệt tình tạo ra các ứng dụng của GIS cho mục đích này, sử dụng công nghệ trong khu vực lân cận vẫn là tối thiểu. Một bài báo năm 1995 bởi những tác giả tài liệu dự án với trọng tâm đặc biệt về các giới hạn của kỹ thuật lập bản đồ hiện có và ký hiệu. | Chapter 5 Mapping Philadelphia s neighbourhoods Liza Casey and Tom Pederson INTRODUCTION Since 1994 the City of Philadelphia has been working to bring GIS technology to the level of neighbourhood planners hoping to initiate with them a PPGIS. Although it has been successful in generating enthusiasm for the applicability of GIS for this purpose use of the technology in the neighbourhoods is still minimal. A 1995 paper by these authors documented the project with particular focus on the limits of existing mapping techniques and symbology for mapping urban neighbourhood environments. This paper documents the progress of the City s continued efforts to give neighbourhood planners access to its GIS resources and the impact of new technologies on that effort. Our finding is that although the City may now be in a much better position to distribute its GIS data through less expensive easier to use interfaces that can effectively distribute public records the difficulties of building effective PPGIS in urban neighbourhoods still exist. BACKGROUND The City of Philadelphia which was literally on the verge of bankruptcy in the early 1990s was rejuvenated under the leadership of Mayor Ed Rendell. The downtown has been revitalized. The new convention center is booked for years. Ben Franklin Betsy Ross and the Liberty Bell are being more effectively promoted and Philadelphia is becoming a true destination city -even attracting the Republican National Convention in 2000. But there is another side to the City. Philadelphia is a victim of the move away from an economy based on manufacturing. It has steadily lost jobs and people over the last 50 years. Between 1965 and 2000 the City lost over 25 per cent of its population. Just since 1988 100 000 jobs were lost and almost 30 per cent of its residents live in poverty. As a result many of Philadelphia s neighbourhoods are filled with vacant buildings and trash strewn lots Figure . They are tormented by crime drugs and .
