Projections Part 2

Process Summary (Practice assignment):

1.    Went to Labins.org.  Clicked on DOQQ.

2.    Downloaded “5359” files from 2004 RGB Albers Units:MT Mr. SID and saved to H: drive.

3.    Opened ArcMap, and added 5359 aerial data.

4.    Closed ArcMap without saving and opened ArcCatalog.

5.    Selected properties of 5359 file in ArcCatalog and changed spacial reference to provided ALBERS_FL.prj file.

6.    Repeated this process for all four 5359 files, and reopened in ArcMap to see the files now had a useable scale.

7.    Closed ArcMap.

8.    Downloaded DRG (digital raster graphic) for Pace quad (mrg5358.exe) from Labins. (State Plane NAD83 Collars Removed).

9.    Edited undefined spacial reference for this file in ArcCatalog to NAD 1983 StatePlane Florida North FPS 0903 (US Feet).prj.

10. Opened blank ArcMap document and added this file to verify useable scale.

11. Downloaded different data sources from FGDL (Florida Geographic Data Library) Metadata Explorer. (All Albers projections!)

“cntbnd” – County boundary

“USGS 24k Quarter Quad Index) – Quad index

“Major Roads”

12. Created excel file with 3 given locations of eagle’s nests in Santa Rosa County, FL.

13. Converted given latitude and longitude in degrees-minutes-seconds to decimal degrees using these formulas:

xcoor = degrees + (minutes/60) + (seconds/3600)

ycoor = (degrees + (minutes/60) + (seconds/3600))*(-1)

Y coordinates are negative because we are dealing with longitude west of the Prime Meridian.

14. Saved excel sheet and imported into ArcMap.

15. Right clicked on file in table of contents and clicked on “Display XY Data”.

16. Selected longitude as the x field, and latitude for y field.

17. Edited Geographic Coordinate system to “WGS 1984”.

18. Points are imported as an Event; exported data to make it a shapefile.

Process summary (Graded assignment):

1.    Using the footprint layer (qd24.shp), picked two adjacent quads (5560 and 5660) in Escambria County, Florida.  Downloaded these quads as 2004 RGB StatePlane FT Mr. SID aerials from Labins.org.

2.    Defined aerials in ArcCatalog as: NAD 1983 StatePlane Florida North FIPS 0903 *US Feet).prj.

3.    Reprojected Quad Index, County Boundary, and major roads shapefiles downloaded before to same State Plane.

4.    Edited Escambria_tanks.xls file as with the practice exercise to have decimal degree values for x and y coordinates.

5.    Imported this excel file into ArcMap like the practice excel file, and exported the event to make it a shapefile.

6.    Reprojected shapefile in ArcCatalog to match State Plane projection, and used NAD1983 to WGS1984 option 5 geographic transformation.

7.    Created map including this Tanks shapefile and DOQQ aerial images.  Added essential map elements and exported to JPG.

8.    Took screen shots of Data Frame Properties/Coordinate System tab to prove all required data sets and layers are in proper coordinate system.