Difference between revisions of "Carneros Watershed: Historic Aerial Photography 1982"
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* Coordinate system: Geographic Coordinate System - GCS_North_American_1983 | * Coordinate system: Geographic Coordinate System - GCS_North_American_1983 | ||
* Datum: D_North_American_1983 | * Datum: D_North_American_1983 | ||
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| + | ==Processing Steps== | ||
| + | |||
| + | * Images were obtained from [[http://glovis.usgs.gov/ GloVis]] | ||
| + | * Once the images were imported into ArcMap, they were georeferenced by hand using distinct features in the landscape | ||
| + | * After being placed in approximately the appropriate location, the images were rectified and the boarders of images were clipped using the "Extract by Mask" tool and a polygon shapefile | ||
| + | * The extracted images were added to the ArcMap project and used to create the final product | ||
| + | |||
== Alternate versions == | == Alternate versions == | ||
Revision as of 16:27, 10 February 2011
Metadata
- Original sources of data:
- Aerial Photos: CIR NHAP 1982 [Obtained from USGS Global Visualization (GloVis)]
- Hydrography: National Map hydrography data set
- Roads: National Map transportation data set
- Watershed boundary: Watershed analysis in ArcMap by Fred Watson based on National Map 1/3 arc-second elevation data
- Data analysis: Shaelyn Hession (Aerial Imagery); Fred Watson (watershed boundary)
- Map produced by: Shaelyn Hession
- Map produced using: ArcMap
- Coordinate system: Geographic Coordinate System - GCS_North_American_1983
- Datum: D_North_American_1983
Processing Steps
- Images were obtained from [GloVis]
- Once the images were imported into ArcMap, they were georeferenced by hand using distinct features in the landscape
- After being placed in approximately the appropriate location, the images were rectified and the boarders of images were clipped using the "Extract by Mask" tool and a polygon shapefile
- The extracted images were added to the ArcMap project and used to create the final product
Alternate versions
- None
