Lab 7

Part 1: Complete Ormsby Chapters 7, 18 & 19 and answer the following questions.

I. Chapter 7

1. The information used for dynamic labels comes from where?

The information comes from the attribute table. You can control which labels are displayed by clicking the on the Labels tab in the Layer Properties dialog box. Next click on the Label Field drop-down list and select the field from the attribute table that you want to use as the labels.

2. You are making a map of Los Angeles and have a point layer that shows all the cities in the region. However, you want to show city names for only 3 cities. What is the most efficient way to achieve this?

One way to do this is to click the drop down arrow next to the New Text tool on the Draw toolbar. Then click Label tool. You can select the options that you want on the Label Tool Options dialog box, then close it. Finally click the cities that you want labels. Another way to do this is to click on the Label tab in the Properties dialog box for the layer you want to label. Check the box next to 'Label features in this layer', and change the Method to 'Define classes of features and label each class differently'. Then click the Add button, type in the new class name that you want to create, and then click OK. In the Class dropdown make sure the 'Label features in this class' box is unchecked for the Default option, and checked for the new class that you created. Next click the SQL Query button to create an expression for what you want. Type in the expression that you want to use for your query, and then click OK.

3. Can you manually adjust the position of dynamic labels?

No, you can only tell the program where to place the labels. If you want to manually move them you need to change the labels to annotations.

4. Which tool needs to be selected to adjust graphics?

The Select Elements tool on the Tools toolbar needs to be selected to adjust graphics.

5. What are the two annotation types?

Two types of annotations are geodatabase annotations and map document annotations.

II. Chapter 18

1. You can create your own ArcMap templates.

a. True

b. False

a. True

2. If you create a map based on an ArcMap template file (.mxt), can you save it as an .mxd file?

Yes, you save maps as a map document (.mxd file extension).

3. Describe two different ways you can access map templates.

One way to access map templates is when you first start ArcMap click the option to use a new template, select the template you wish to use, and then click OK. The other way to access map templates is when AcrMap is already open. Go to the File menu and click New.  In the create new section of the dialog box click template, select the template you wish to use, and then click OK.

4. You are adding five point graphics to your map. Instead of having to change the properties for each one after you add it, you want to set the default point symbol to a size 12 purple star. How do you do this?

In the TOC click on the symbol for the point graphics that you want to change. This opens the Symbol Selector dialog box. Here you can change the symbol, color, size, etc. of the point graphics. In this example you would click on the star symbol, change the size to 12 point, and change the color to purple. Once you do this click OK, and the point graphics will change to show the new properties you selected.

5. Describe two different ways you can change the color of a graphic circle.

If you right click the graphic circle and select properties, or double click, the Properties dialog box will open. Here you can change the size, color, and symbol of the graphic circle. Once you have made the changes that you want click OK and they will be applied. The other way to change the color is to first select the graphic circle. Next on the Draw toolbar click the drop-down arrow next to the line color and select the color you want to change the line to. If you also what the change the fill color click the drop next to fill color and select the color you wish to fill the circle with.

III. Chapter 19

1. What is the first thing you should always do before setting up your map layout?

The first thing you should do is setup your page size and orientation.

2. Why is the scale different in the data view versus the layout view?

The size of the data frame is different in the two different views. In data view the size of the data frame is the whole screen, but in layout view you need to adjust it so it fits on your page. In addition, you may have multiple data frames in layout view requiring even smaller data frames. Since the data frames are smaller the scale must also become smaller to accommodate this.

3. What are three customization options available for the scale bar?

There are several customizations that you can do to a scale bar. Three of these are the number of divisions and subdivisions, the division units used, and when the scale bar is resized what is adjusted (width, division values, and number of divisions).

4. Why is it important to use the 1:1(Zoom to 100%) button?

When you zoom to 100% you are able to see what the view would see when the map is printed.

5. Explain how a graphic added to your data view would respond differently compared to a graphic added to the layout view when navigating around your map.

If you add a graphic in data view it has a dynamic relationship to the map. If you pan around or resize the map the graphic is automatically adjusted to maintain its relationship with the map. If you add a graphic in layout view this relationship does not exist. The graphic will stay in the same place and keep the same size regardless to what you do to the map.

Part 2: More about Mapping in ArcGIS

Creating Thematic Maps

Q1: Choropleth maps are a type of thematic map. Define what we mean by a choropleth map.

Looking at the origin of the word choros means place and plethos means magnitude. In other words a choropleth map is used to show the magnitude of different places.

Q2: Read about layer files in the ArcGIS Desktop Help. Describe their benefits.

Display properties for labeling and symbolization are included in a layer file. However, they only reference a data source instead of including the actual datasets.

Q3: How do layer files differ from layer packages?

A layer package includes the layer file, the dataset, and an XML file. It is used to share the information with other users.

Map Tips and Dynamic Hyperlinks

Q4: What is the population of City of Long Beach for the year 2000?

461,522

Q5: What is the population for the City of Los Angeles in 2000?

3,694,820

Q6: Using the ArcGIS Desktop Help, describe the three types of hyperlinks that can be created.

Document, uniform resource locator (URL) and macro are the three types of hyperlinks that can be created. A document type of hyperlink launches a document or file when a feature is clicked with the Hyperlink tool. A URL launches a web page when a feature is clicked with the Hyperlink tool. The macro type allows you to create customized hyperlink behavior.