GPS for Dummies.pdf - Engineering Surveyor

236Part III: Digital Mapping on Your Computer1. Move the mouse cursor to the location where you want the text to start.2. Hold down the Shift key.3. Move the cursor in the direction you want the text to be aligned.A line is temporarily drawn as you move the cursor. For example, if youdraw a line at a 45-degree angle, the text will flow at a 45-degree angle.4. Release the Shift key.5. In the dialog box that appears, type in the text label and click OK.A list of all the text labels is displayed.Text in a label is limited to 60 characters and can be edited or deleted bychoosing Text➪List.You can set the text color by choosing File➪Preferences➪Colors. The ColorPreference dialog box, which isn’t all that intuitive, uses a series of radio buttonsthat correspond to red, green, and blue values. Your best bet for choosinga color you’d like is to enter some text and then display the Color Preferencedialog box. When you select different combinations of color radio buttons, thetext you entered changes color.Creating and Using Multiple Map FilesUSAPhotoMaps uses a map file to name areas that have downloaded aerialphoto or map data. A map file is a bookmark for a general vicinity or location.For example, you might have downloaded aerial photos for the entire GrandCanyon. Instead of scrolling to view photos at each end, you could create twomap files, one called North Grand Canyon and the other South Grand Canyon.To create a map file bookmark1. From the File menu, choose New Map File.2. In the New Map dialog box that appears, enter the name of the mapfile and the coordinates that you’d like to bookmark.Refer to Figure 14-1.3. Click OK.After you create a map file, select it, and USAPhotoMaps displays the aerialphoto or map associated with that area.To select and display a new map file