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Orthophotos Metadata 1998


Orthophotos 1998 - Panchoromatic

Name(s) Orthophotos; Black & White; Grayscale;
Flight Date 1998  (Depending on flight area)
Spatial Domain Urbanized Tucson Area: Marana, Oro Valley, Sahuarita, Green Valley, Unincorporated Pima County
Format Tagged Image File Format ( TIFF uncompressed)
Feature type raster
Resolution 1, 2, 4, 8, 16 foot resolutions
Horizontal Control Arizona State Plane Central Zone NAD83 (international feet)
Additional info  
Source Pima Association of Governments

Orthophotos 1998 - Multi-spectral

Name(s) Orthophotos; 4 Band Multi-spectral ( Red, Green, Blue, Near Infra Red)
Flight Date 1998  (Depending on flight area)
Spatial Domain Urbanized Tucson Area: Marana, Oro Valley, Sahuarita, Green Valley, Unincorporated Pima County
Format ERDAS LAN format
Feature type raster
Resolution 1 meter resolution
Horizontal Control Arizona State Plane Central Zone NAD83 (international feet)
Source Pima Association of Governments

Orthophotos 1998 - Digital Elevation Models - DEMs

Name(s) DEM-Digital Elevation Models
Format ASCII format files with comma delimiters
Control NAD83(92 adjustment) and NGVD88 files provided in NAVD29 and NGVD88
Accuracy Relates to standards for 1' = 200', 2.00 foot c.i. photogrammetric mapping (verticle accuracy is +/- 0.5 feet on any given point of the dataset
File Specifications
  • DEM should not be utilized to create contours
  • DEM are line (.lf) files only
  • DEM collected at 30.00 foot intervals

Orthophotos 1998 - Digital Terrain Models - DTMs

Name(s) DTM-Digital Terrain Models
Format ASCII format files with comma delimiters
Control NAD83(92 adjustment) and NGVD88 files provided in NAVD29 and NGVD88
Accuracy Relates to standards for 1' = 200', 2.00 foot c.i. photogrammetric mapping (vertical accuracy is +/- 0.5 feet on any given point of the dataset
File Specifications
  • DTM consist of line (.lf) , point (.pt) XYZ (East, North, Elevation)
  • DTM include breaklines, mass points and exclusion polygons
  • DTM file structure utilizes a number two (2) for breaklines and number eight (8) for exclusion polygons
  • DTM collected at 50.00 foot intervals (Grid)

Orthophotos 1998 - 2.00 foot Contours (EOO)

Name(s) 2.00 foot Contours
Creation Date November 1999
Spatial Domain Urbanized Tucson area (Created from existing DTMs)
Format ESRI interchange file format .E00s
Conversion Tips Convert .E00s to ESRI shapefiles (Arcview)
  • Import E00s into Arcview Import71 utility
  • Converts E00 to Arcview shapefile
  • Add shapefile to Arcview
  • Save as new shapefile
     
  • Shapefiles can then be imported to AutoCad14 with Map extension

 


Orthophotos 1998 - 2.00 foot Contours (shapefiles)

Name(s) 2.00 foot Contours
Creation Date December 2000
Spatial Domain Portions of Urbanized Tucson Area (Created from exisitng DTMs, that were created/enhanced from DEMs by Database Terrain Mapping, Inc.
Format ESRI Shapefiles (Arcview)
Feature type Lines
Original Conversion DTM Inc.
Tips Shapefiles can be imported to AutoCad14 with map extension.
 

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