Thursday, March 3, 2016

Data Search

   In this lab, our objective was to search for our own data, perform projections with the project tool and project raster tool, define projections when unassigned one, and clip our raster and vector data. We searched for five basic datasets (roads, rivers, cities & towns, parks, county boundaries), two environmental datasets (I chose habitat and land cover), and two raster (a Digital Elevation Model and DOQQ). We used Labins.org to find our raster data (aerial photo) and USGS to download a DEM.
 
My Vector Map
 
   This map shows the vector data I acquired. On the left, the map depicts the major cities and roads in Duval County. On the right, the map depicts parks, major rivers, federally protected marine areas, and mangrove land cover. The projection for each vector data was converted from Albers Equal Area Conic to NAD 1983 State Plane Florida East FIPS 0901 Feet (US Feet). This projection was based off of the DOQQ raster data I collected, which was set to this projection.
 
My DEM Map
   This map shows the elevation of Duval County. The light quantities represent high elevation and the dark quantities represent low elevation. This was projected from GCS North American 1983 to my designated projection. It was created by clipping the data frame image to the boundary of Duval County.
 
My DOQQ Map
 



 
   This map shows the aerial photo as an inset map over the county of Duval. The aerial photo is a portion of the city of Jacksonville, laid over the county of Duval and the major roads (labelled) in Duval. The raster data was already in the correct projection, all I had to do was re-project the county boundary data and road data. 
 

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