Seeing the GPS File in ArcMap
A GPS file is basically a file of individual three-dimensional spatial points, or fixes. The fundamental form of each point is a latitude value, a longitude value, and an altitude value. When this file was converted to a point shapefile, the latitudes and longitudes were converted to Cartesian northings and eastings. Each altitude became represented as an attribute value associated with the appropriate point.
____ 3. Add the layer Boat_SP83.shp:6
To add the file, select File > Add Data > Add Data. In the Add Data window, find the Contents View Type drop-down button. Select Details. Repeatedly press the Up One Level button until it is no longer active. Activate the drop-down menu for the Look in field. Highlight Folder Connections and click. Navigate to the River folder you connected to earlier and pounce.7
Find and highlight Boat_SP83.shp. The results will look something like Figure 2-10
. Press the Add button. (Ignore any warnings.) In the left-hand pane (the T/C, as you saw previously), you will see the Boat_SP83 entry. In the right-hand pane, which is formally called a data frame
, you should see a GPS track composed of a plotting symbol that looks like a diamond or a dot. The track resembles a fishhook. Compare with Figure 2-11
____ 4. Make the color of the plotting symbol bright red: The plotting symbol color has ...