Abstract
 Accessing Maryland Cadastral Data Using Esri Mapping Components Track: Cadastral and Land Records Author(s): Kuang-Yao Lee, Mike Lettre, John Coleman, Bob Dadd Since 1996 the Maryland Department of Planning has electronically maintained a statewide set of georeferenced property maps and parcel databases for Maryland's jurisdictions. Now completing the 10th Edition Year, the property maps and parcel databases along with a variety of related map layers are annually updated and released on CD-ROM for each jurisdiction. The property maps appear on the CD as georeferenced raster images in TIFF format and the parcel databases point shapefiles referenced by x,y to their location on the property map images. To increase the data accessibility, we developed a Windows-based desktop application that specifically displays the property map images and supports spatial queries of the parcel databases. This application is developed and maintained using Microsoft Visual Basic and Esri MapObjects LT, which provides viewing, selecting, and printing capacities for spatially referenced property assessment information, market sales and transfer records, and detailed Computer-Aided Mass Appraisal data (CAMA). In addition, it efficiently displays seamless tax images with a transparent background, which consequently facilitates overlaying effects of map layers. This paper focuses on the approaches adopted to utilize Windows API and the downloadable Esri ArcScripts to achieve desired functionality and improve performance. Kuang-Yao Lee State of Maryland Maryland Department of Planning 301 West Preston Street Suite 702 Baltimore, MD 21201 US Phone: 4107671218 Fax: 4103335381 E-mail: klee@mdp.state.md.us Mike Lettre State of Maryland Maryland Department of Planning 301 West Preston Street Suite 702 Baltimore, MD 21201 US Phone: 410-767-4460 E-mail: mlettre@mdp.state.md.us John Coleman State of Maryland Department of Planning 301 West Preston Street Suite 702 Baltimore, MD 21201 US Phone: 410-767-4614 E-mail: jcoleman@mdp.state.md.us Bob Dadd Maryland Department of Planning 301 W. Preston Street Baltimore, MD 21201 US Phone: 410-767-4455 E-mail: bdadd@mdp.state.md.us |
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