Exercise1: Make a print map of Africa

Transcription

1 Exercise1: Make a print map of Africa Step 1 Open an existing Arcview project Step 2 Choose which geographic features are displayed on a map Step 3 Zoom in to an area you re interested in. Step 4 Label the features displayed on a map Step 5 Print out a map with a title, legend, scale bar and north arrow Open the Arcview project that contains the tutorial 1. Start Arcview,Cancel the welcome dialog and you ll see the arcview application window. 2. Click the open an existing project radio button, then press OK A project is a file in which you store the work you do with ArcView. A project contains all the views, tables, charts, layouts, and scripts that you use for a particular ArcView application or set of related applications. In this way, your work is stored in one convenient place. Project file names have an.apr extension. 3. In the dialog that appears, navigate to the location of the directory or folder named Avtutor that contains arcview tutorial data. Double-click avtutor directory and then double click the arcview directory it contains. 4. Select the project file called qstart.apr from the list on the left side of the dialog and press ok. When the project opens, you'll see a window named 'qstart.apr'. This is the Project window. The Project window gives you access to all the components contained in the project file. It also enables you to create new components. As you can see from the list in the Project window, qstart.apr contains three views. A view is an interactive map that lets you display, explore, query, and analyze geographic data in ArcView.

2 Open the map of the world 5. Double Click the view called World in the Project window. The World map appears. This map shows the projected population of the world's countries by the year A view is made up of layers of geographic information for a particular area or place. Each layer is a collection of geographic features, such as qvers, lakes, countries, or cities. In ArcView, these layers are called themes. In the World view in this exercise, the 'Projected population in 2000' theme and the 'Life Expectancy' theme represent the same features, the world's countries, but they display different information about these features. All the themes in a view are listed to the left of the map in the view's Table of Contents. The Table of Contents also shows the symbols used to draw the features i each theme. The check box next to each theme indicates whether it is currently turned on or off in the map, that is, whether it is currently drawn on the map or not. The order in which the themes are listed in the Table of Contents is also important. The themes at the top of the Table of Contents are drawn on top of those below it. Themes that form the background of your map, such as the ocean, are therefore listed at the bottom of the Table of Contents. You can change the width of the Table of Contents by dragging the border between the Table of Contents and the map either left or right. This is useful if you want to increase the width of the Table of Contents so that you can see long theme names or long labels in a theme's legend. Draw the countries of the world by life expectancy 6. In the view's Table of Contents, click the check box next to the theme called 'Projected population in 2000' to turn it off. 7. Click the check box next to the 'Life Expectancy' theme to turn it on. Add rivers and lakes to the map 8. Turn on the themes for Rivers and Lakes as well. Zoom in on Africa

3 9. Click the Zoom In tool a. 10. Drag a box over Africa: position the cursor where you want one comer of the box to be, hold down the left mouse button, drag the mouse until the box covers the area you want to zoom in on,--then release the mouse button to finish. The view redraws to show you the area in the box you defined. If you make a mistake, click the Zoom to Previous Extent button B to go back to where you were before you zoomed in. Now that you've zoomed in on Africa, you can see clearly that African countries have some of the lowest life expectancies in the world. Label some of the countries on the map 11. In the view's Table of Contents, click on the name of the 'Life Expectancy' theme to make it active. Be sure to click on the name of the theme, not the check box next to the theme's name. When a theme is active, it appears highlighted (raised up) in the Table of Contents. By making a theme active you are telling ArcView you want to work with the features in that theme. 12. Click the Label tool. 13. Click on any country in Africa, at the position where you want the label to start. The country will automatically be labeled with its name. You can label as many countries as you like. Notice that when you add a label, it is framed by four handles. 14. You can move the labels where you like. To move a label, click the Pointer tool. and click once on the label you want to move. Handles appear around the label to show that it is selected. Now drag it anywhere you like. You can also drag one of the selected label's handles with the Pointer tool to resize the text in the label. 15. When you are finished working with the labels, you can deselect any labels that are still selected by clicking on the map with the Pointer tool anywhere where there's not a label.

4 Identifying features on your map To get information about one of the features on your map, use the Identify tool. When you click on a feature with this tool, ArcView displays the attributes of the feature in a dialog. To identify a feature on a map 1. In the view's Table of Contents, click the name of the theme that the feature you wish to identify belongs to. This makes the theme active. When a theme is active, it appears highlighted (raised up) in the Table of Contents. 2. Click the Identify tool g. 3. Click on the feature you wish to identify. The feature you click on flashes in the view, and its attributes appear in the Identify Results dialog. If you want to identify a feature but you aren't sure which theme it belongs to, make all the likely themes active before using the Identify tool. To make more than one theme active, hold down SHIFf and click on their names one by one in the view's Table of Contents Prepare your map for inclusion in your report 16. From the View menu, choose Layout. 17. In the dialog 'that appears, click the Landscape template 18. Press OK. ArcView automatically creates a layout that includes your map of Africa, a legend,. a title, a north arrow and a scale bar. A layout makes it easy to produce presentation quality maps with ArcView. With a layout, you can assemble all the components you want to appear in your map, arrange them together to get the design you want, and then print it out when it's ready

5 19. By default, ArcView uses the view's name as the title for the layout. As your map is no longer a world map, you should change the title. With the Pointer tool., double-click the title. 20. In the dialog that appears, delete the existing text and type in Africa. 21. Press OK. The title on the layout changes to 'Africa'. If you want to change the title's font, choose Show Symbol Window from the Window menu. To move or resize the title or any of the other components in your layout, use the Pointer tool. Congratulations! You've made your first map with ArcView! Now print it so you can show it off!

6 Print your layout 22. From the File menu, choose Print Setup. In the dialog that appears, change the orientation of your printout to Landscape. In this way, your printout will match the orientation of your layout. 23. Click the Print button 8. In the dialog that appears, click OK. Alternatively, you could export your layout to a graphics file so that you can import this file into your report. To export your layout, choose Export from the File menu. You've successfully completed the first exercise and acquired the basic ArcView skills. the next exercise, you'll continue working with the qstart.apr project file, so you can go ahead and begin Exercise 2 now. Alternatively, if you want to exit ArcView now and continue with the next exercise later, you should first save your work. It's best to save your changes to qstart.apr to a new project file so that the original file is left unchanged. In this way, other people will be able to use this tutorial without seeing the work you've already done. To save your work as a new project file 24. Make the Project window active. The Project window is currently hidden by the vie and layout windows you opened in this exercise. To make the Project window active, either close those windows or choose qstart.apr from the Window menu. 25. From the File menu, choose Save Project As. In the dialog that appears, specify a name and location for the new project file, and press OK. ArcView will automatically add the.apr extension to the name you gave for the new project file.