Pictometry uses a grid of squares called "sectors" that define a project area. Pictometry calls these "Ortho Sector Tiles". The tiles represent the areas covered by each of the 4-inch resolution orthophotos in JPG format in the Pictometry 2014 data "AZPIMA14-TILES-4INCH" directory. pt14sor4 is that sector grid for the 2014 Pictometry 4 inch orthophotos in the Tucson metropolitan area. Known Errors/Qualifications: While these pictometry sectors are approximately 1/2 mile square, they are not based on PLSS quarter sections and are offset considerably from the PLSS section grid. Lineage: This layer was delivered in our projection of NAD83 HPGN International Feet. Spatial Domain: Eastern Pima County Rectified: n/a Maintenance Organization: Pictometry International Corp. Maintenance Format: Shape Primary Source Organization: Pictometry International Corp. Primary Source Document: AZPIMA14-TILES-4INCH_SOR.SHP Primary Source Date: 20140623 Primary Source Format: Shape GIS Contact: John Dickinson
