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paregion displays all parcels in Pima County.
Known Errors/Qualifications: paregion contains duplicate taxcodes for parcels, i.e. undeveloped subdivisions in which all lots are assigned the same taxcode, until the lots are developed. Further, a relatively small number of other parcels have more than one polygon per parcel resulting in duplicate taxcodes. Subdivision common areas are typical examples. Parcels with duplicate taxcodes in paregion duplicate parcel valuation data. Summing valuations for these duplicated taxcode parcels from paregion will result in inflated totals. Users should normalize their analysis results based on the frequency of duplicate taxcodes. Some areas that are not assigned a tax code by the Assessor are "void" areas, having no attributes. Void roadway areas that "bleed" beyond the county border are the most common case. They include a major portion of county street areas. The coverage format will always have these "void" areas due to the nature of the coverage format. These areas are not in our library's paregion shapefile format.
Spatial Domain: Pima County
Rectified: parcel
Maintenance Organization: PC ITD GIS
Maintenance Description: Steve Whitney's processing assembles the section DWG drawing data daily and creates the coverage in the library. Special paregion processing (ParcelToShape) makes the library shapefile from the coverage, deleting all areas with blank (null) parcel codes, resulting in true voids where there are no parcels, such as most right-of-way. The coverage format always has the interior "island" areas due to the nature of the coverage format.
Maintenance Frequency: Daily
Maintenance Format: Coverage
Primary Source Organization: PC ITD GIS
Primary Source Contact: Steve Whitney
Primary Source Date: 2006
Primary Source Scale: 200
Primary Source Format: DWG
GIS Contact: Steve Whitney
MapGuide Layer Name: Parcels - Pima
MapGuide Scale Range: 0 - 25000 |