ArcGIS Drivers Permit. Using ESRI ArcView 10 and NH GRANIT Data

Transcription

1 ArcGIS Drivers Permit Using ESRI ArcView 10 and NH GRANIT Data UNH Cooperative Extension September 2011

2 Original Draft: September 2011 Exercise manual by: Anne Deely University of New Hampshire Cooperative Extension Geospatial Technologies Training Center 219 Nesmith Hall Durham, NH NOTE: These workshop materials are not intended as an endorsement of any product or organization. UNH Cooperative Extension programs and policies are consistent with pertinent Federal and State laws and regulations on non-discrimination regarding age, color, handicap, national origin, race religion, sex, sexual orientation, or Veteran's status. College of Life Sciences and Agriculture, County governments, NH Division of Forests and Lands, Dept. of Resources and Economic Development, NH Fish & Game Dept., U.S. Dept. of Agriculture, Forest Service and U.S. Fish and Wildlife Service cooperating.

3 Exercise 1: Exploring the ArcMap 10 Interface OPEN ARCMAP ADD DATA EXPLORE THE TABLE OF CONTENTS USE THE TOOLS TOOLBAR TO NAVIGATE WITHIN DATA VIEW USE THE IDENTIFY BUTTON OPEN ARCCATALOG AS A STAND-ALONE PROGRAM OPEN ARCCATALOG WITHIN ARCMAP DOCK THE ARCCATALOG WINDOW ADD DATA FROM ARCCATALOG MANAGE DATA IN ARCCATALOG OPTIONAL: VIEW DATASETS USING WINDOWS EXPLORER...13 Exercise 2: Attribute Tables and Selecting Features USE SELECT FEATURES TOOL SET SELECTABLE LAYER(S) SELECT FEATURES FROM THE ATTRIBUTE TABLE SELECT BY ATTRIBUTES SELECT BY LOCATION...17 Exercise 3: Symbolizing Data SYMBOLIZE USING UNIQUE VALUES SYMBOLIZE USING GRADUATED COLOR OPTIONAL: REMOVE OUTLINES FROM ALL FEATURES SAVE A LAYER FILE...22 Exercise 4: Layout View EXPLORE LAYOUT VIEW ADD A NORTH ARROW AND SCALE BAR TO YOUR LAYOUT ADD A LEGEND TO YOUR LAYOUT ADJUST LEGEND TEXT IN THE TABLE OF CONTENTS...26 Exercise 5: Acquiring Data ADD DATA FROM ARCGIS ONLINE EXPLORE NH GRANIT STREAM AERIAL PHOTOS THROUGH GRANIT S WEB MAP SERVICE (WMS)...28 Exercise 6: Common Analysis Tools SET DEFAULT GEODATABASE ADD DATA TO ARCMAP SET A DEFINITION QUERY CLIP A LAYER BUFFER FEATURES IN A LAYER CALCULATE GEOMETRY...34 ArcGIS 10 Drivers Permit

4 ArcGIS 10 Drivers Permit

5 Exercise 1: Exploring the ArcMap 10 Interface This first hands-on exercise is designed to introduce you to ArcMap. You will open and explore a blank map document (.mxd), familiarize yourself with the graphical user interface (GUI) and interact with toolbars, tools, data layers, and the Table of Contents. We will explore much of what you do in more detail in later exercises so don t get hung up on details. 1. Open ArcMap To start the ArcMap application, double click with the left mouse button on the ArcMap shortcut on the desktop. If there is no shortcut, then start the program by clicking on Start> Programs> ArcGIS> ArcMap 10. It may take a while for ArcMap to open. A. When the Getting Started window pops up, click on New Maps under the Open existing map or make new map using a template heading on the left. B. Under My Templates, select Blank Map. Click OK at the bottom of the window to open a blank map in ArcMap The ArcMap Graphical User Interface (GUI) will look something like what you see here. If it looks slightly different, it s because additional functionality (toolbars, etc.) may have been turned on or enabled by a previous user. When ArcMap is closed, it remembers these settings and restores them when it is reopened. ArcGIS 10 Drivers Permit Exercise 1 page 3

6 C. Explore the ArcMap Interface. As you hold the mouse pointer over a button, a description of its function will appear in a small box below it. Additionally, a brief explanation of what it does will appear in the status bar in the lower right corner of the ArcMap GUI. Take a few minutes to try out this technique. As you mouse over some of the icons and buttons, try to familiarize yourself with what each one does. Some of the major areas of the ArcMap interface are labeled below. Menu Bar Title Bar Map Display Scale Standard Toolbar Table of Contents Display Options Tools Toolbar Table of Contents Display Area Status Bar Data View Layout View Refresh ArcGIS 10 Drivers Permit Exercise 1 page 4

7 D. Toolbars in ArcMap are sets of tools that perform similar types of functions. The Tools toolbar includes tools for navigating around the map display and tools for performing basic query functions. All toolbars can be moved around the ArcMap interface and can be floating windows or docked to the left, right, top or bottom of the GUI. The position of toolbars can be manipulated by clicking on the handle on its far left side and dragging it to a new location. a. Try moving the Tools toolbar around the ArcMap window. You can even drag it to a location on your desktop that s completely off the ArcMap GUI, just try not to lose it! Toolbar handle E. After you have finished experimenting with new toolbar locations, move the Tools toolbar back to its original position. 2. Add Data Now that you are familiar with the ArcMap GUI, let s explore some GIS data. In this step, you will add data to your ArcMap document. Remember, an ArcMap document does not contain the data itself, but rather includes layers that point to data sets stored on disk. A. In ArcMap, click on the Add Data button. ArcGIS 10 Drivers Permit Exercise 1 page 5

8 B. Navigate to C:\DriversPermit10\BaseData\PoliticalBoundaries and select pbp.shp. Click Add. C. Click the Add Data button again, and then navigate to C:\DriversPermit10\BaseData\Roads and select Roads_DOT.shp. Click Add. D. Click the Save button and navigate to C:\DriversPermit10\Projects\DataExploration\. Save your map as Exercise1.mxd. 3. Explore the Table of Contents The Table of Contents is the pane at the far left of your screen that lists the data layers that you have added to your map document in this case, pbp and Roads_DOT. You will work within the Table of Contents anytime you are in ArcMap it is the place to go to access layer properties, attribute tables, and more. Right now you will just get used to the way ArcMap draws data layers. A. Note that Roads_DOT is at the top of the Table of Contents, and pbp is below it. ArcMap always draws layers from the bottom of the Table of Contents up, so in this case towns are drawn first, and roads are drawn on top of them. Click on the layer name pbp and drag it to the top of the Table of Contents. What happens? (You should see that the towns now cover up the roads, because they are drawn on top of the roads layer.) B. Return pbp to its original position below Roads_DOT. C. Click the check box next to pbp on and off. Notice the effect this has. If you like, turn off Roads_DOT and leave them off for a while they can take a while to redraw. D. Right click on the colored box ( symbol patch ) just below pbp in the Table of Contents and choose a new color. This is a quick and easy way to change the symbol color. If you want transparent fill, set the fill color to No Color (located at the very top of the color palette). E. Left click on pbp s symbol patch to open its symbol selector window. This provides a more thorough way to change the layer s color note that you can now change not just the color inside each feature, but the outline color and line type, and you can apply different textures, stipples, gradients, etc. ArcGIS 10 Drivers Permit Exercise 1 page 6

9 4. Use the Tools Toolbar to Navigate Within Data View Let s start exploring some GIS data. The Tools Toolbar, usually located either horizontally at the top of the screen or vertically at the far left of the screen, has eight tools to help navigate. It also has several other tools to help you with basic functions like selecting and identifying features, measuring distance and area, and finding XY coordinates on your map. The most common tools are briefly described below. ArcGIS 10 Drivers Permit Exercise 1 page 7

10 Take several minutes and try using each of the first 8 navigation tools on the Tools Toolbar to see how each one works. If you get stuck or lose your place, you can always click on the Earth icon on the toolbar. This is the Full Extent tool. It will restore the map display to its full extent. We ll get to some of the other tools in a minute. A. You can explicitly set the display scale of your map by typing a value into the scale window on the Standard Toolbar. Try typing in something like 1 inch = 1000ft. You can also select from a set of predefined scales. This set of scales can be customized to include a user defined scale. Give it a try. B. Use your mouse to Pan and Zoom. If your mouse has a scroll wheel, you can use it to zoom in and out and to pan around the display area. Rotate the wheel forward to zoom out and backwards to zoom in. Hold the wheel down and then move the mouse to pan around the display area. This can be a real time saver! ArcGIS 10 Drivers Permit Exercise 1 page 8

11 Zoom Out Zoom In Hold down to pan 5. Use the Identify Button The Identify button is very handy it will report to you all of the attributes for any feature that you click on in your map. By default it works on the top-most visible layer in your Table of Contents, but you can set it to identify features from a specific layer, from all visible layers, or from all layers. A. Click on the Identify button in the Tools toolbar, and then click somewhere in your map. If Roads_DOT is turned off, then you will get information for whatever town you clicked on. If roads are visible, then you will get information for whatever feature you clicked on a road or a town. B. Experiment with drawing a box with the Identify button (this will give you multiple results) and with changing the layers that the tool works on. ArcGIS 10 Drivers Permit Exercise 1 page 9

12 6. Open ArcCatalog as a Stand-Alone Program Now that you have some familiarity with the ArcMap interface, we will open the stand-alone version of ArcCatalog. (Remember that there is also way to open ArcCatalog (with limited functionality) within ArcMap we will do that later. ArcCatalog is the place to go to manage your data to move or rename files, to browse through and preview your data sets, to create new empty shapefiles or geodatabases, etc. A. Click the ArcCatalog icon on the desktop or, from the Start menu choose All Programs > ArcGIS > ArcCatalog 10. B. ArcCatalog is structured somewhat like Windows Explorer there is a catalog tree on the left, and on the right you can see the contents of whatever folder you have selected in the catalog tree. If you have drilled down into a folder and selected a dataset on the left, you can preview it on the right. C. In the left-hand pane, navigate to C:\DriversPermit10\BaseData\ConservationLand. D. Click on the + next to ConservationLand to open up this folder, then click on consnh. E. At the top of the right-hand pane, click on the Preview tab. F. Notice that the same navigation tools (zoom, pan, etc.) and the Identify tool that we used in ArcMap are available here as well. Feel free to zoom, pan, and identify features in the preview pane. ArcGIS 10 Drivers Permit Exercise 1 page 10

13 G. Right now you are previewing the geography of NH s Conservation Lands dataset. You can also preview its attribute table. Choose Table from the drop-down list at the bottom of the preview pane. H. Scroll through the table to get a feel for the type of information it contains. You will learn more about attribute tables in the next exercise (and throughout this workshop). 7. Open ArcCatalog Within ArcMap A. When you are finished exploring the ArcCatalog (stand-alone) interface, click the X in the upper right hand corner of the window to close it. Note: it is generally worthwhile to close ArcCatalog if you are not actively using it, as it can sometimes lock up your data files and make it so you cannot edit them or make any permanent changes (like adding attribute fields) to them. B. Return to your ArcMap document. C. You will now open an ArcCatalog window within ArcMap. D. Click the ArcCatalog icon in the Standard toolbar. E. An ArcCatalog catalog tree should appear. Depending on how the last user on your computer left it, the catalog tree may be floating in the middle of your screen, or it may be docked at the far right side of your screen. (It could actually be docked at the top, left, or bottom of your screen also, but most people seem to dock it to the right.) 8. Dock the ArcCatalog Window One useful feature of ArcGIS 10 is the ability to dock all sorts of windows (such as ArcCatalog, attribute tables, the Identify results window, etc.) along the edges of the interface. A. If your ArcCatalog window is already docked, grab its blue title bar and drag it to the center of your screen to un-dock it. B. To dock a window in ArcMap, click on its blue title bar and with the mouse button still depressed drag it a little bit. As you drag it, you will see sets of blue triangles (anchors) appear. Drag the window until your mouse pointer is on top of the right-most blue anchor triangle, and then release the mouse button. ArcGIS 10 Drivers Permit Exercise 1 page 11

14 C. This technique works for many of the windows that you will use in ArcMap, though using the anchors at the sides of the interface has a slightly different effect than using the anchors at the center of the screen. As you work in ArcMap, feel free to experiment with these different anchor locations. D. Once ArcCatalog is docked, a small pushpin icon appears in its title bar, next to the X. If the pushpin is vertical, the docked window will always be visible. If the pushpin is horizontal, the docked window will autohide that is, it will disappear until your cursor hovers over it. E. Click the pushpin to change whether your window autohides or not. Leave it in whichever position you prefer. 9. Add Data from ArcCatalog A. In the ArcCatalog pane, expand the Folder Connections folder, and then browse to C:\DriversPermit10\BaseData\ConservationLand. B. Click on consnh and drag it to the left, into your map document. This is an easy way to add data to a map document (though unlike using the Add Data button, you can only add one layer at a time). C. Save your map. (Do this regularly!!) ArcGIS 10 Drivers Permit Exercise 1 page 12

15 10. Manage Data in ArcCatalog You can copy, paste, move, and rename data layers in ArcCatalog, as well as create new folders, shapefiles, or geodatabases. In this example, you will make a backup version of a shapefile and rename it with today s date. A. Right click on consnh in ArcCatalog and choose Copy. B. Right click on the folder name ConservationLand and choose Paste. C. A new shapefile called consnhscopy is created. D. Rename the shapefile: Click once to select the new shapefile, and then click again to make its name editable. (If you have trouble doing this, just right click on its name and choose Rename.) Give it the name consnh_backup[yyyymmdd] for example, consnh_backup Optional: View Datasets using Windows Explorer You just created a new shapefile using ArcCatalog. It was very easy to do: just copy, paste, and rename one file. However, what really happened was a little more complicated: seven files were copied, pasted and renamed. You can see that this is what has occurred if you open Windows Explorer to view the files within your shapefile. The purpose of this step is simply to better understand the files that contribute to a shapefile, and why we use ArcCatalog rather than Windows Explorer to manage data. You will not be making any changes within Windows Explorer. A. Right click on the Start button and choose Explore. B. Browse to C:\DriversPermit10\BaseData\ConservationLand. C. Notice how many files are present. A shapefile is not a single file it is a collection of three or more files with the same first name (such as consnh) and different suffixes (*.shp, *.dbf, *.shx, *.sbx, *.prj, etc.) D. Using ArcCatalog to manage your data means fewer steps for you instead of copying, pasting, renaming, or moving three or more files, you only have to work on one. It also vitally means far fewer chances for error. It is far too easy to accidentally leave out one of the sub-files contributing to a shapefile, or make a typo and mis-name just one of them. Either of these mistakes can be hard to trace back and will make the shapefile unusable. ArcGIS 10 Drivers Permit Exercise 1 page 13

16 Exercise 2: Attribute Tables and Selecting Features In this exercise you will explore the attribute tables for the layers in your map, learn how to select features, and how start editing attributes. 1. Use Select Features Tool A. If it s not already open, open ArcMap and the map you were working on earlier: Exercise1.mxd. B. Click on the Select Features tool on the Tools toolbar, and then click on a feature in your map. C. Any feature or features that you selected should now be outlined in bright turquoise. 2. Set Selectable Layer(s) Particularly when using the Select Features tool, it can be very difficult to figure out what you ve selected once you have clicked somewhere. In the step above, you may have selected some roads, some conservation lands, and a town or two with just one click of the tool. There is, however, a handy way to control what can get selected: the List By Selection tab. A. Click the 4 th icon from the left at the top of the Table of Contents the List By Selection tab. B. The regular Table of Contents view shows you which layers are visible and in what drawing order; the List By Selection view instead shows you which layers are able to be selected and how many features in each are currently selected. C. In the example above, all layers consnh, pbp, and Roads_DOT are all selectable, but only consnh and pbp have any features selected. (Roads_DOT is actually not currently turned on, so its name is grayed out above.) Consnh has 27 features selected (too many to list). Pbp has 5 features selected, and they are listed by name. ArcGIS 10 Drivers Permit Exercise 2 page 14

17 D. If you had only wanted to select towns, you could click the Clear Selected Features button next to the selection results for consnh, and only the 5 towns would remain selected. E. Clear consnh s selected features, and then make consnh NOT selectable by clicking the Click to toggle selectable button next to it. F. Return to the regular Table of Contents view by clicking on the first icon from the left at the top of the Table of Contents: List By Drawing Order. It is probably a good habit to return to this Table of Contents view, because you will frequently want to do things like turn layers on and off and re-arrange the drawing order. 3. Select Features from the Attribute Table A. Right click on the name pbp in the Table of Contents, and choose Open Attribute Table. B. In an attribute table, you can select features by clicking on the small gray box at the far left of a row. You can click on just one row, drag down for several rows, or hold down the Ctrl key to select multiple rows. C. Experiment with selecting towns by clicking on the gray box at the left. You can clear your selection by clicking the gray box in the very upper left hand corner, or by clicking the Clear Selection button at the top of the table. ArcGIS 10 Drivers Permit Exercise 2 page 15

18 D. After you have selected some features, try some of the other buttons and tools use the Zoom to Selected Features, Clear Selection, and Switch Selection buttons. Also, try right clicking on the gray box at the left what happens? 5. Select By Attributes The Select By Attributes dialogue lets you write a query to select features based on the values in the attribute table. A. Click the Select By Attributes button at the top of the table window. B. Select all of Coos County by the following steps: a. Double click on the field County b. Single click on the = operator c. Click the Get Unique Values button d. Double click on the number 5 (for Coos County) C. Your statement should read: SELECT * FROM pbp WHERE: "COUNTY" = 7 (Note that by clicking on the options as instructed above, you avoid having to know whether/where to use single quotes/double quotes, etc. You are much better off doing it this way than trying to type the statement in the dialog window!) D. Click Apply, then Close. All of the towns in Coos County should now be selected. ArcGIS 10 Drivers Permit Exercise 2 page 16

19 E. For more guidance on writing selection queries, click the Help button in the Select By Attributes dialog. ArcGIS s Help is actually remarkably helpful, and frequently gives very useful examples. Queries can be more complex than the ones we use here combining multiple expressions, incorporating wildcards, involving calculations, and so on. The help text gives many examples that may be quite useful to you. 6. Select By Location In this next step, you will select from one feature based on its geographic location relative to another feature. Specifically, you will select all towns that Interstate 89 runs through (intersects). First you will need to select I-89, then you will select towns based on their location relative to I-89. A. Clear any selected features you may already have by clicking the Clear Selected Features button on the Tools toolbar. B. Right click on Roads_DOT and choose Open Attribute Table. C. Click the Select By Attributes button at the top of the roads attribute table. D. Double click on the field ROUTE_NO (near the bottom of the field list), then click the = operator, then click the Get Unique Values button. E. Scroll down to the value (for I-89) and double-click on it. Your statement should read: "ROUTE_NO" = ' ' F. Click Apply and then Close. G. From the Selection menu, choose Select By Location. H. Select pbp as the target layer, Roads_DOT as the source layer. Make sure the box Use Selected Features is checked otherwise it will search for any town intersected by any road. You want it to only find towns intersected by the selected road: Route 89. ArcGIS 10 Drivers Permit Exercise 2 page 17

20 Note that if you wanted, you could apply a search distance say, 10 miles and find any towns that were within 10 miles of Route 89. I. Click OK. J. Turn off the roads layer and, if necessary, zoom to the full extent of NH so you can see the results of your selection. K. Save your map. ArcGIS 10 Drivers Permit Exercise 2 page 18

21 Exercise 3: Symbolizing Data In this exercise, you will work through several different methods of symbolizing data, using town and county data and 2010 census data. 1. Symbolize Using Unique Values In this example, you will symbolize each county with a different color. A. Open a new, empty map. If ArcMap is closed, start it up and choose a blank map at the template/intro screen. If ArcMap is already open, click the New Map File button at the upper left (on the Standard toolbar). B. Choose Blank Map from the New Document dialog. C. Click the Save button and navigate to C:\DriversPermit10\Projects\Census. D. Name your map Census_exploration.mxd. E. In the ArcCatalog pane, browse to the Political Boundaries folder and add pbp and pba. Then browse to the Census folder and add tl_2010_33_tabblock10. F. Turn off the census data layer in the Table of Contents. You are not going to use it right away, and it takes too long to redraw. ArcGIS 10 Drivers Permit Exercise 3 page 19

22 G. Right-click on the name pbp in the Table of Contents and choose the last option, Properties. (Alternatively, just double-click on the name pbp.) H. Take a minute to browse through the Properties window. This is where you can change all these different properties that affect how a layer is drawn in your map including labels, transparency, fields to be displayed, and symbology. I. Do the following steps to symbolize each county with a unique color: 1. On the far left, click on Categories, then on Unique Values. 2. From the Value Field menu, choose County. 3. Click the Add All Values button near the bottom of the window. 4. Choose a color ramp that seems appropriate. 5. Click OK. J. Each county should now have a different color. 2. Symbolize Using Graduated Color In this example, you will symbolize each census block by its median age using a graduated color ramp. A. Turn off pbp and turn on the census data. ArcGIS 10 Drivers Permit Exercise 3 page 20

23 B. Right click on the census data layer and choose Properties. C. The name of the census data file is long and confusing you can change it right in the Properties window. This is only a virtual change it just changes the name that is displayed in the Table of Contents not the actual name of the data itself. D. Click on the General tab of the Properties window. E. Type Census in the Layer Name text box, then click Apply. You should now see the new name in the Table of Contents. F. Click on the Symbology tab. G. Instead of choosing Unique Values as before, this time you will choose Quantities Graduated Colors. H. Set the Value Field to MEDIANAGE. Click Add All Values. I. You will probably get a message that the maximum sample size has been reached. This means that there are so many features in the data set, that the computer has stopped looking at each one to know the full range of data values. This is OK in this example, there probably isn t too much variability. After looking at 10,000 values (the default maximum sample size) it has probably gathered a broad enough sample. Just click OK to this message. J. Click Apply. K. There is not very much variability in the data it will probably be useful to use more than just the default 5 age classes. ArcGIS 10 Drivers Permit Exercise 3 page 21

24 L. In the Classification section of the Symbology tab, change the number of classes from 5 to 10. Click OK to apply the change and close the window. 3. Optional: Remove Outlines from All Features A. Double-click on Census to re-open the Properties window. B. Right click on one of the symbol patches in the Symbology tab display area. C. Choose to set Properties for All Symbols. D. In the Symbol Selector window that appears, set he outline width to 0. Do not change any other options (especially the fill color remember, you are working on all the symbols right now, so if you change the fill for one, you ve changed it for all. E. Click OK, then OK again. F. If you have time, continue to explore the options in the Symbology Tab. Click the Classify button and change the classification method try standard deviation and quantile. Change the color ramps used, and see how that affects your map. Change the symbology for pba the political boundaries. By symbolizing on the Type field, you can draw county lines (type = 2) differently from town lines (type = 3) give it a try. 4. Save a Layer File Layer files are fantastic ways to retain and re-use your work from one map to another. Getting the symbology for a layer just right can be very time consuming. If you then save the layer as a Layer File, that symbology (and labels, scale rendering, etc.) will be retained and the layer will be ready to use. To use a layer file, you simply add it to a map document just as you would a shapefile or geodatabase feature class. A. Right click on Census in the Table of Contents and choose Save as Layer File from the menu. B. Browse to C:\DriversPermit10\BaseData\Census. Type in the layer name you want, such as MedianAge.lyr. Click OK. C. Now, the next time you want to use Median Age in a map, all you will do is add that layer file. Remember that layer files do not contain the data layer itself just instructions for how to draw it. D. Save your map. ArcGIS 10 Drivers Permit Exercise 3 page 22

25 Exercise 4: Layout View Layout View is where you prepare your map for exporting, publishing, or printing. It is where you can add all the extra elements that enable it to communicate its message to the reader: title, legend, scale bar, north arrow, date, text about data sources, etc. It also functions a bit like Print Preview for your map you can see the page margins and all these map elements will fit together on the page. 1. Explore Layout View A. If it is not already open, open your Census_exploration.mxd map. B. So far in this workshop, you have always been working in Data View. Now you will switch to Layout View. Layout View is where you can add the elements that your map needs to be understandable to someone else. C. Click the tiny Layout View button at the bottom of the ArcMap interface. ArcGIS 10 Drivers Permit Exercise 4 page 23

26 D. When you switch to Layout View, a new toolbar becomes available to you: the Layout Toolbar. (It was probably already docked in your ArcMap interface, but until you switch to Layout View, it is all grayed out.) If it is not yet docked, drag it toward the top of your screen and dock it up there. The Layout Toolbar contains several tools that probably look familiar they are very similar to the navigation tools on the Tools Toolbar. To distinguish them, each of their icons has the image of a sheet of paper in the background. The navigation tools (like Zoom and Pan) on the Layout Toolbar and Tools Toolbar work quite differently. The Layout tools will zoom and pan you around the map page for example, to look closely at the legend while the zoom & pan from the Tools toolbar will move you around the data itself. You can still use the data zoom & pan while you are in Layout view! ArcGIS 10 Drivers Permit Exercise 4 page 24

27 E. Explore the navigation tools on the Layout Toolbar until you are comfortable understanding how they work compared to the comparable tools on the Tools Toolbar. 2. Add a North Arrow and Scale Bar to your Layout Without some standard map elements such as a legend and scale bar it may be difficult for others to use your map. A. From the Insert menu, choose Insert North Arrow. Choose a north arrow style, and click OK. The north arrow is placed on the map. It has handles at the corners that allow you to resize it, and you can click in the middle and drag it anywhere on your page. If you decide you want to change its style, just double click to open its properties and then you can change it. B. From the Insert menu, choose Insert Scale Bar. Choose a style and click OK. To get the scale bar to look the way you want it, you almost certainly will have to open and manipulate its properties. C. Double-click on the scale bar to open its properties. D. On the Scale and Units tab, try changing the instructions for resizing to Adjust width. Then you can specify exactly how wide you want each division of the scale bar. E. Try setting the units to Miles, the division length to 10, and the number of divisions to 5. Click OK to see how these changes affect the scale bar. Feel free to play with these settings until you make it look the way you want. F. Save your map. 2. Add a Legend to your Layout A. From the Insert Menu, choose Insert Legend. The Legend Wizard will appear. B. In the first window, choose which layers to include in the legend. You may want to choose just the census data, or the census data and the political boundaries. To add layers to the legend, use the arrow button to move them from the left-hand pane to the right-hand pane. C. Click Next through the next several windows until you can click Finish. ArcGIS 10 Drivers Permit Exercise 4 page 25

28 D. The Legend is placed on your map. As with the scale bar, you will almost certainly need to adjust it before it looks right. 3. Adjust Legend Text in the Table of Contents It is somewhat counter-intuitive, but in order to change the text in your legend, you need to make adjustments to the layers themselves either in the Table of Contents or through the layers Properties windows. A. In the Table of Contents, change the heading MEDIANAGE to Median Age. You can do this by simply selecting the text and then clicking it again to make it editable. Hit enter when you are done. B. You can change the number formats for the median age categories in this same manner. For example, if the text reads, , you can select it and change it to Less than 30 or < 30 years can become years, and so on. C. If you have time, add a title, date, and text describing the data sources (use the drawing toolbar at the bottom of your interface for adding text). Try using the Insert dynamic text option under the Insert menu to automatically add a date or file path. D. When you are done, save your map. ArcGIS 10 Drivers Permit Exercise 4 page 26

29 Exercise 5: Acquiring Data Data is now available from many sources online. Many states, including New Hampshire, stream data over the internet, and you can add these data servers to your map. ESRI also has a service called ArcGIS Online to which users can post data, and from which you can stream or download data. In this exercise, you will see how to access these online data sources. Note that when you stream data, you are not actually downloading it onto your local computer you will need an active internet connection to view the data. 1. Add Data from ArcGIS Online A. It is very easy to add data from ArcGIS Online you can do so directly from the Add Data button on the Standard Toolbar. B. Instead of clicking in the middle of the Add Data button, click on the tiny triangle just to the right of it. This will provide a sub-menu of options. C. Choose Add Data From ArcGIS Online. D. When the ArcGIS Online window opens, you can type in a search term, such as Imagery or Elevation. E. Choose one of the results that you find appealing, and click Details. If you want to add that layer to your map, click Add. F. It may take a little while for the data to load. When it does, zoom in and explore the data set. Is it what you expected? 2. Explore NH GRANIT GRANIT is New Hampshire s statewide GIS clearinghouse. Many state agencies that make their data publicly available (NH DOT, Fish & Game) do so through GRANIT. Additionally, GRANIT conducts research, develops new data, and maintains and distributes many other data sets relevant to the state. Many of these data sets are available for download from their website. Newer aerial photographs, whose large file sizes make them difficult to download, are available as web map services. A. Open a web browser and go to B. From the Download Free Data menu at the top of the screen, choose Data Download. C. On the next page, choose the middle option: to Link from Layer List by Data Category. ArcGIS 10 Drivers Permit Exercise 5 page 27

30 D. Any data layers that have a download symbol in the 2 nd column (Download from Data Discover Tool) or 3 rd column (FTP) are available for immediate download. Other layers will have to be purchased on DVD or other media. 3. Stream Aerial Photos through GRANIT s Web Map Service (WMS) A. From the Online Maps & Services menu, choose Web Map Services (WMS). B. Highlight the URL for the map service you want to use (such as 2010 Aerial Photographs) and copy it (Ctrl-C or right-click and choose Copy). C. Return to ArcMap. D. Click the Add Data button. E. Instead of navigating to a folder on your computer, choose to add data from a GIS Server. ArcGIS 10 Drivers Permit Exercise 5 page 28

31 F. Double-click Add WMS Server. G. Paste the URL you copied from GRANIT s website into the URL text box (use Ctrl-V to paste, or right-click and choose Paste). H. Click the Get Layers button, then select the 2010 imager and click Add. (You may have to do this multiple times.) I. The 2010 imagery should be added to your map. ArcGIS 10 Drivers Permit Exercise 5 page 29

32 Exercise 6: Common Analysis Tools This exercise contains an introduction to several common analysis tools clip, buffer, calculating geometry, and so on. You will use these tools as you prepare data for a hypothetical project within the Ashuelot Pond Subwatershed. 1. Set Default Geodatabase One handy feature of ArcGIS 10 is that you can set a default geodatabase for each MXD. This makes it just a little bit easier to navigate to your data and to name a new dataset when you are geoprocessing. You can define the default geodatabase on the template selection/splash screen when you first start a new map, or you can set it or change it at any time from the File > Map Properties window. A. Open a new, empty map. If ArcMap is closed, start it up and choose a blank map at the template/intro screen. If ArcMap is already open, click the New Map File button at the upper left (on the Standard toolbar). B. Choose Blank Map from the New Document dialog. C. Click the small browse-to-folder button at the bottom right to browse to a new default geodatabase. ArcGIS 10 Drivers Permit Exercise 6 page 30

33 D. Navigate to C:\DriversPermit10\Projects\AshuelotPond\Data. E. Click the New File Geodatabase button. When it appears, give it a new name AshuelotPond_Data.gdb. Highlight the new name, then click Add. F. Click the OK button to accept your template choice. G. In ArcMap, click the Save button and navigate to C:\DriversPermit10\Projects\AshuelotPond. H. Name your map AshuelotPond_DataPrep.mxd. 2. Add Data to ArcMap A. If you are in Layout View, switch to Data View. B. Open the ArcCatalog pane and browse to C:\DriversPermit10\BaseData. C. From the ConservationLands folder, add consnh.shp; and from the Watersheds folder, add wshedp.shp. From the Hydrography folder, add NHFlowline.lyr notice that this is a layer file, has a diamond rather than a square icon, and comes into your map with its symbology already set. D. In the Table of Contents, turn off all layers except wshedp. ArcGIS 10 Drivers Permit Exercise 6 page 31

34 3. Set a Definition Query A definition query is somewhat like a Select By Attributes, but instead of simply selecting a given feature, you limit the layers definition to include only that feature. It does not change the actual dataset living on your computer or server, but it limits the way ArcMap thinks about that dataset while working with the layer. In this example, we are preparing datasets for a project in the Ashuelot Pond Sub-watershed. We will start by limiting the Watershed data to look only at that sub-watershed. A. Double-click on wshedp in the Table of Contents to open its Properties. B. Click the Definition Query tab. C. Click the Query Builder button. D. Build the following query (using the buttons in the builder window, just like you did while selecting by attributes): "HU_12_NAME" = 'Ashuelot Pond'. (Double-click on the field name HU_12_NAME, click on the = operator, click Get Unique Values, then double-click Ashuelot Pond.) E. Click OK, then OK again. F. Only the Ashuelot Pond subwatershed is now shown. 4. Clip a Layer Several common geoprocessing tools are available from the Geoprocessing menu, and that is how we will access them here. You can also find them in the System Toolbox at the bottom of the Table of Contents, by clicking on ArcToolbox, or by using the Search window to search for them. A. From the Geoprocessing menu, choose Clip. B. If the Help pane is not visible on the right, click the Show Help button. C. Drag layers from the Table of Contents to fill in the Input and Clip features in the Clip dialog. (If you browse to your file system for wshedp, it will use all of the state s watersheds, instead of just the Ashuelot Pond subwatershed as you have defined it for this map document.) Set the input features to NHDFlowline, the clip features to wshed, and the output features to ashuelot_streams in the default geodatabase. ArcGIS 10 Drivers Permit Exercise 6 page 32

35 D. Click OK. E. It sometimes takes a little while to conduct the process, but eventually you should notice a little status update at the bottom of your interface: Clip Clip, and when it is complete, a small window will briefly appear in the lower right, saying Clip with a green checkmark to indicate it was successful. F. The clipped soils layer will probably be automatically added to your Table of Contents; if not, click the Add Data button and add it yourself. 5. Buffer Features in a Layer In this step, you will create a layer representing riparian buffers in the watershed. A. From the Geoprocessing menu, choose Buffer. B. Drag layers from the Table of Contents, setting the Input layer to ashuelot_streams. Name the output ashuelot_streams_buffer150ft (it s a good idea to put how big your buffer is in the file name itself), set the buffer distance to 150 feet, and the dissolve type to All. ArcGIS 10 Drivers Permit Exercise 6 page 33

36 C. Click OK. 5. Calculate Geometry The new riparian buffers you just created do not have any attributes associated with them, but you may want to know their total acreage. GIS is very good at calculating the sizes of things! You will make a new field in the attribute table to hold this information. A. Right click on ashuelot_streams_buffer150ft and select Open Attribute Table. B. Click the Table Options button in the upper left of the attribute table. C. Choose Add Field. D. Name the new field Acres and change its type to Double. (This will allow it to hold decimal places. The default is an integer value, with no decimal places.) ArcGIS 10 Drivers Permit Exercise 6 page 34

37 E. Click OK. F. Right click on your new field, Acres, and choose Calculate Geometry. G. Click Yes, it is OK to run this process outside of an editing session. (If you make a mistake, you can just delete the field and do it again. You do not risk ruining your data.) H. Set the units to Acres, then click OK. Congratulations! You have earned your ArcGIS 10 Driver s Permit! ArcGIS 10 Drivers Permit Exercise 6 page 35