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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 |
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| 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
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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)
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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
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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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