Geographic and Attribute Data: Selection, Input, and Editing - Introducing Geographic Information Systems with ArcGIS - page 304

6 feet
FIGURE 5-2
add the image file Foozit_Court.TIF as a layer in ArcMap. If the Unknown Spatial Reference
message appears, ignore it. If asked do not build “pyramids.” An image of the court should
appear. See Figure 5-2. No reference numbers are provided, because, unlike when you typed in
the values, the node positions and line lengths will be determined by where you click when you
trace the image with the cursor.
4. Make the ArcMap window occupy the full screen. Zoom in so the line drawing occupies the
full map display area. Slide the cursor over the map area and notice that the coordinates
are (probably) in Decimal Degrees. This is because, if the coordinate numbers are small,
ArcMap assumes a geographic “projection.” Obviously, you want to fix this: With the Select
Elements pointer, right-click the map, pick Data Frame Properties > General, and change the
map and display units to Feet. OK. Use Measure, with its units set to Feet, to determine the
dimensions of the court to two decimal places. The result: _________ by _________. Dismiss
Measure.
5. Click the pointer (Select Elements) icon. Slide the cursor around the image, noticing the
coordinates. Zoom in on the southwest corner. By placing the + part of the cursor on the corner,
vwrite the coordinates in the table that follows with precision of two decimal places. Zoom
back. Find the coordinates for the northwest corner. Repeat this procedure for each of the other