Author a map

The first step in making a map is defining the map's purpose. The second step is acquiring and preparing data to support the purpose. The third step is authoring the map. Authoring a map involves making cartographic decisions about how to present data so the map achieves its purpose. In a dynamic environment, where map users can zoom and pan, the map should be designed to work at a variety of scales. It's also important to consider accessibility issues such as color vision deficiencies.

Overview

• Video length: 12:26.
• This video was created with ArcGIS Pro 3.1.

In this tutorial, the purpose of your map is to show the accessibility of medical facilities in Scotland. You'll open a project that contains a starting map with the data you need. You'll work with map and layer properties, symbolize and label layers, filter data with definition queries, and set visibility ranges on layers. You'll view the final map at different scales and test its accessibility for people with color vision deficiencies.

• Estimated time: 45 minutes
• Software requirements: ArcGIS Pro Basic

Note:

The quick-start tutorials are updated at each software release. For the best experience, use an online help version that matches your software version.

Open the project

The data in your starting map includes medical facility locations, roads, population centers, and rural areas.

1. Start ArcGIS Pro and sign in if necessary.
2. On the start page, next to the list of recent projects, click Open another project.

   Note:

   If you already have a project open, click the Project tab on the ribbon. In the list of side tabs, click Open. On the Open page, on the Recent Projects tab , click Open another project at the top of the page.

3. On the Open Project dialog box, under Portal , click ArcGIS Online .

   Note:

   If you are signed in to ArcGIS Enterprise , you must set your active portal to ArcGIS Online to access the tutorial data. If you aren't able to do this, you can download the data from a browser.

4. At the top of the dialog box, in the Search box, type Author a map v310 and press the Enter key.
5. In the list of search results, click Author a map v310 to select the project package.

   Note:

   If there is more than one project package with this name, select the package with the Authoritative badge . In the Owner column, the owner name is ArcGISProTutorials. If you don't get any results, see No search results are returned.

6. Click OK.

   A map of Scotland opens showing medical facilities, roads, and cities. The map is hard to interpret. The symbol colors are arbitrary, the roads are too dense, and some of the layer names aren't very meaningful.

   

7. On the ribbon, click the View tab. In the Windows group, click Reset Panes and click Reset Panes for Mapping (Default).

   This ensures that the Contents and Catalog panes are open and that other panes are closed.

Set map and layer properties

You'll make some simple improvements by changing the names of map layers and the map itself. You'll add metadata to the map and change the basemap.

1. In the Contents pane, right-click the SG_UrbanRural_2020 layer and click Properties .

   The Layer Properties dialog box appears with the General tab selected.

2. In the Name box, change the layer name to Urban Rural Classification. Click OK.

   You can also double-click a layer to open its properties.

3. Double click the OSM_MedicalFacilities_Scotland layer. On the Layer Properties dialog box, on the General tab, change the name to Medical Facilities. Click OK.
4. In the Contents pane, click the OSM_Roads_Scotland layer to select it and click again to make the name editable.
5. In the Contents pane, change the layer name to type Roads and press the Enter key.

   Tip:

   You can select a layer (or any item in your project) and press the F2 key to rename it.

6. In the Contents pane, right-click Map and click Properties .

   The Map Properties dialog box appears with the General tab selected.

7. In the Name box, change the map name to Scotland.
8. Click the Metadata tab.

   Metadata for your map can include descriptive information and tags. If you share the map as a web map, the metadata is especially important. It is indexed and helps people find the map in portal searches. It also appears on the web map's item details page, which helps people understand the map's content and purpose.

9. Fill in the following fields as shown (you can copy and paste the text). Be sure to separate tags with commas.

   • Title—Accessibility of medical facilities in Scotland
   • Tags—Roads, Medical Facilities, Cities, Urban, Rural, Scotland
   • Summary—Location of medical facilities in relation to roads in urban and rural Scotland.
   • Description—This map shows the location of medical facilities in relation to roads in urban and rural areas in Scotland. It helps identify parts of the country that may need improved access to health services.
   • Credits—European Union, OpenStreetMap Foundation, Scottish Government
   • Use limitations—The data used in this map is covered by different licenses, all of which allow redistribution of the data. See the metadata of individual map layers for details.

10. Click the Coordinate Systems tab and confirm that the Current XY coordinate system is set to British National Grid.

    The British National Grid is the standard coordinate reference system for Great Britain.

11. Click OK on the Map Properties dialog box.
12. On the ribbon, click the Map tab. In the Layer group, click Basemap and click Dark Gray Canvas.

    The Dark Gray Canvas basemap consists of two layers: Dark Gray Base, which is the physical map, and Dark Gray Reference, a layer of place-names. You'll remove the reference layer so the place-names don't conflict with labels you'll add later in the tutorial.

13. In the Contents pane, right-click the Dark Gray Reference layer and click Remove .
14. On the Quick Access Toolbar, click Save to save the project.

Symbolize the Urban Rural Classification layer

The Urban Rural Classification layer divides Scotland into urban and rural areas, but the current symbology doesn't show this. You'll explore the layer attribute table and change the layer symbology.

1. In the Contents pane, uncheck the check boxes for the Medical Facilities, Roads, and Cities layers to turn them off. Leave the Urban Rural Classification layer turned on.
2. On the Map tab, in the Navigate group, click Bookmarks . Click the Full Extent bookmark.
3. In the Contents pane, right-click the Urban Rural Classification layer and click Attribute Table .

   

   The layer has three land classifications. People live in accessible rural areas, remote rural areas, or settlements of 3,000 or more people.

   Tip:

   To widen a field, drag the vertical boundary between field names.

4. Close the attribute table.
5. Right-click the Urban Rural Classification layer and click Symbology .

   The Symbology pane appears.

6. In the Symbology pane, click the Primary symbology drop-down arrow and click Unique Values . In the lower half of the pane, on the Classes tab, click Add all values .

   The map updates to show the three land classifications in unique colors. By default, the layer is symbolized on the numeric values in the Class field of the attribute table.

7. In the Symbology pane, on the Classes tab, in the Symbol column, click the symbol for value 1. (This represents the area defined by settlements of 3,000 or more people.)

   The Symbology pane changes to show options for formatting polygon symbols.

8. At the top of the pane, click the Properties tab. On the Symbol tab , click the Color button and click Gray 40%. Set the Outline width value to 0. At the bottom of the pane, click Apply.

   The symbol is updated on the map and in the Contents pane.

9. At the top of the pane, click Return to primary symbology page .
10. In the Symbol column, click the symbol for value 2 (representing rural areas within a 30-minute drive of a large settlement).

    The Symbology pane presents formatting options.

11. On the Properties tab, on the Symbol tab , click the Color button and click Sage Dust. Set the Outline width value to 0. Click Apply.

    

12. Click Return to primary symbology page and click the symbol for value 3 (representing remote rural areas).

    This time, instead of choosing a color from the palette, you'll make your own color.

13. On the Properties tab, on the Symbol tab , click the Color button and click Color Properties. On the Color Editor dialog box, click the Color Mode drop-down arrow and click RGB. Set the values as shown below, and press the Enter key after each change.

    • Red—Set to 128.
    • Green—Set to 178.
    • Blue—Set to 102.

    

14. Click OK on the Color Editor dialog box. Set the Outline width value to 0. Click Apply.
15. Click Return to primary symbology page . On the Classes tab, click More and uncheck Show all other values.

    Tip:

    In a layer with many unique values, you may want to assign unique symbols to a few important features and a generic symbol, such as a gray fill, to the rest. That is the purpose of the Show all other values symbol. However, with only a few unique values, you don't need it.

16. On the Classes tab, in the Label column, double-click the value 1 to make the label editable. Change the text to Cities and Towns and press the Enter key.

    After you commit the label change, the label for value 2 is automatically editable.

17. For value 2, change the label to Accessible Rural Areas and press the Enter key. For value 3, change the label to Remote Rural Areas and press the Enter key.

    In the Contents pane, the layer shows the header Class above the updated symbols. The descriptive labels make this header unnecessary.

18. In the Contents pane, under Urban Rural Classification, click the Class header and click again to make it editable. Press the Delete key and press the Enter key.

    

19. On the Quick Access Toolbar, click Save to save the project.

Symbolize the Roads layer

The Roads layer is very dense. This creates visual clutter and causes the layer to draw slowly. You'll apply a definition query to filter the layer. Roads not specified by the definition query won't draw on the map and won't appear in the layer attribute table. Definition queries suppress data but don't delete it—you can remove a definition query at any time to access the full set of features and records.

You can further control the display of features in a layer by setting scale ranges for symbol classes. You'll set the most important roads in the layer to draw at all map scales, and less important roads to draw only when the map is zoomed in.

1. In the Contents pane, turn on the Roads layer.
2. Right-click the Roads layer and click Attribute Table .

   The status bar at the bottom of the table shows over 400,000 features in the layer. There aren't actually that many roads in Scotland—many of the features represent different segments of the same road.

3. In the table, right-click the Road Type column heading and click Statistics.

   

   A bar chart appears showing the counts for each road type. The vast majority are service roads, residential roads, or footways. These are small, local roads that you don't need in the map. Your definition query will include five important road types—motorway, trunk, primary, secondary, and tertiary—and exclude the rest.

   Tip:

   Hover the pointer over a data marker to see the exact number of features it represents.

4. Close the chart, close the Chart Properties pane, and close the attribute table.
5. In the Contents pane, double-click the Roads layer to open its properties.
6. On the Layer Properties dialog box, click the Definition Query tab. Click New definition query.

   A definition query consists of a field name, a logical condition, and a value (or values) to test against the condition.

7. In the Query 1 expression box, click the Where drop-down arrow and click Road Type. Click the condition drop-down arrow and click includes the value(s). Click the values drop-down arrow and check the following boxes:

   • motorway
   • primary
   • secondary
   • tertiary
   • trunk

8. Click outside the drop-down list to close it. Click Apply on the query.

   

9. Click OK on the Layer Properties dialog box.

   

   There are now fewer than 20,000 road features in the layer.

10. In the Contents pane, right-click the Roads layer and click Symbology . In the Symbology pane, click the Primary Symbology drop-down arrow and click Unique Values .
11. Confirm that the Field 1 drop-down list is set to Road Type. (If necessary, click the drop-down arrow and select this value.)

    You'll symbolize the layer on the attributes in the Road Type field. The available attributes are those you specified in the definition query.

12. On the Classes tab, click Add all values .
13. Click More and uncheck Show all other values.
14. In the list of values, click the row containing the value trunk to select it—but don't click the trunk symbol itself. Click Move selected values up until the row is just under motorway.

    

    Your symbol colors may be different.

    The five road symbol classes are now ordered by importance. This order is reflected in the Contents pane.

15. In the Contents pane—not the Symbology pane—under the Roads layer, click the symbol for motorway.

    The Symbology pane shows options for formatting line symbols

16. At the top of the pane, click the Gallery tab if necessary. In the search box, type highway and press the Enter key.
17. In the search results, under ArcGIS 2D, hover over the first Highway symbol. (Its category is Scheme 1.) Click the symbol.

    

18. At the top of the pane, click the Properties tab. Set the Line width value to 2 pt and press the Enter key. Click Apply.
19. In the Contents pane, click the other Road Type symbols in turn and change their values in the Symbology pane using the table below as a guide.

    Tip:

    Search for symbols by name on the Gallery tab, set their properties on the Properties tab, and click Apply to apply your changes.

    Value	Symbol	Color	Line width
    trunk	Major Road (ArcGIS 2D Scheme 1)	Default	2 pt
    primary	Minor Road (ArcGIS 2D Scheme 1)	Default	1.5 pt
    secondary	Default	Yucca Yellow	1 pt
    tertiary	Default	Yucca Yellow	0.5 pt

    

    The roads don't draw in their symbol class order—if they did, the motorways would be on top of the other roads. By default, features in a layer draw according to their database order (the order of their Object ID values in the attribute table), not their symbol class order. You'll override this behavior by turning on symbol layer drawing, which draws features in their symbol class order.

20. In the Symbology pane, click Return to primary symbology page . At the top of the pane, click the Symbol layer drawing tab and click Enable symbol layer drawing.

    

    Now you'll set scale ranges for the symbol classes so the roads draw at appropriate map scales.

21. At the top of the Symbology pane, click the Primary Symbology tab . In the lower half of the pane, click the Scales tab.

    By default, each road type is visible at all map scales. You may need to widen the Symbology pane to see the full scale range setting.

22. In the Scale Range (min to max) column, set the slider positions as follows:
    • In the primary road type row, drag the left slider to 1:500,000.
    • In the secondary row, drag the left slider to 1:100,000.
    • In the tertiary row, drag the left slider to 1:50,000.

    On the map and in the Contents pane, only motorways and trunk roads appear. The other roads won't draw until you zoom in to larger scales.

    

23. On the ribbon, on the Map tab, in the Navigate group, click Bookmarks . Click the Glasgow bookmark.

    The primary roads now draw in addition to the motorways and trunk roads.

    Tip:

    The primary roads draw at map scales of 1:500,000 and larger. If you don't see them, you may need to zoom in. You can set the map scale directly by clicking the scale drop-down arrow at the bottom of the map view.

24. Go to the River Clyde bookmark.

    You should see the secondary roads. Depending on your map scale, you may also see the tertiary roads.

25. If necessary, zoom in to a map scale larger than 1:50,000 to see the tertiary roads. Go back to the Full Extent bookmark.
26. On the Quick Access Toolbar, click Save to save the project.

Symbolize the Medical Facilities layer

You'll choose a symbol for the medical facilities, customize it with transparency, and use feature clustering to aggregate symbols that are close together into single symbols that are sized proportionally.

1. In the Contents pane, turn on the Medical Facilities layer.
2. Click the Medical Facilities symbol. In the Symbology pane, click the Gallery tab if necessary.
3. In the search box, type hospital and press the Enter key. Under ArcGIS 2D, click the medium-sized Hospital icon. (Its category is POI-Medium.)

   

4. Click the Properties tab and click the Layers tab under it.

   Symbols can be composed of one or more symbol layers. The Hospital symbol is composed of two symbol layers—a red heart on top of a white circle. These symbol layers can be modified independently. (The cased roads in the Roads layer are also composed of two symbol layers.)

5. Click the white circle to select it.

   

6. Expand the Appearance section if necessary. Click the Color button and click Color Properties.
7. On the Color Editor dialog box, change the Transparency setting to 50% and press the Enter key. Click OK on the Color Editor and click Apply in the Symbology pane.
8. In the Contents pane, ensure that the Medical Facilities layer is selected. On the ribbon, click the Feature Layer tab. In the Drawing group, click Aggregation and click Clustering .

   On the map, clusters of medical facilities are now represented by proportionally-sized symbols. The clusters update dynamically as you zoom in and out on the map.

9. At the top of the Symbology pane, click the Clusters tab and click the Cluster settings tab under it.
10. Experiment by moving the Clustering radius slider to different positions.

    As the clustering radius becomes higher, more symbols are aggregated into fewer clusters.

11. Move the slider to a position about one-third of the distance from the low end.
12. Uncheck the Show cluster text check box to remove the count of medical facilities from the cluster symbols.

    

13. Close the Symbology pane.

    

    Your results may look different depending on where you placed the Clustering radius slider.

14. Zoom in and out on the map to see the number and size of clusters change. When you're finished, click the Map tab on the ribbon and go to the Full Extent bookmark.
15. On the Quick Access Toolbar, click Save to save the project.

Label the Cities layer

You'll turn on labels for the Cities layer so map readers can identify population centers. By default, all the labels in a layer belong to a single label class, which means that they share the same set of properties, such as font size and color. You'll create a second label class so you can apply different properties to large and small cities.

1. In the Contents pane, turn on the Cities layer and drag it to the top of the drawing order.
2. Right-click the Cities layer and click Attribute Table .
3. Right-click the Population 2015 field and click Sort Descending .

   Five of the thirteen cities have populations of more than 100,000. You'll use this number as the threshold to define label classes for large and small cities.

4. Close the attribute table.
5. In the Contents pane, right-click the Cities layer and click Label .

   By default, the labels draw in black and don't stand out well against the other symbology. You'll fix that problem shortly, but first you'll define a query expression to filter out the small cities from the label class.

6. Ensure that the Cities layer is selected in the Contents pane. On the ribbon, click the Labeling tab. In the Label Class group, click SQL Query .

   The Label Class pane appears. You'll construct the SQL query in the same way you previously made a definition query for the Roads layer.

7. In the Label Class pane, click New expression.
8. In the expression box, click the Where drop-down arrow and click Population 2015. Click the condition drop-down arrow and click is greater than. Click in the values box and type 100,000.

   

9. Click Apply.

   On the map, only cities with populations over 100,000 are labeled.

10. At the top of the Label Class pane, click the Symbol tab and confirm that the General tab is selected under it.

    To help the labels stand out from the background, you'll add a halo. A halo is a background fill color that separates the text from features on the map.

11. Expand Halo and click the Halo symbol drop-down arrow. Under Polygon symbols, click the White fill symbol. Confirm that the halo size is 1 pt.

    

12. Click Apply.

    The labels are easier to distinguish on the map. Now you'll create a second label class for the small cities.

13. On the ribbon, on the Labeling tab, in the Label Class group, click the Class drop-down arrow and click Create label class.
14. On the Create new label class dialog box, type Small Cities and click OK.
15. In the Label Class pane, confirm that Small Cities is the active label class. (Its name appears at the top of the pane.) Ensure that the Symbol tab is selected and the General tab is selected under it.
16. Change the halo symbol to the White Fill symbol as you did before. Click Apply.

    By default, all cities are labeled in the new label class, so you may see duplicate labels on the map.

17. At the top of the Label Class pane, click the Class tab. If necessary, click the SQL query tab under it. Click New expression.
18. Create the following expression: Where Population 2015 is less than or equal to 100,000. Click Apply.
19. On the ribbon, on the Labeling tab, in the Visibility Range group, click the Out Beyond drop-down arrow and click 1:500,000.

    Labels for the large cities display at all scales. Labels for the small cities display only when the map is zoomed in to 1:500,000 and larger scales.

    Currently, the polygon features in the Cities layer display on the map as well as the labels. However, the Urban Rural Classification layer already includes a symbol class for cities and towns. You'll make the features in the Cities layer transparent so that only their labels display.

20. In the Contents pane, click the symbol for the Cities layer.

    The Symbology pane displays options for formatting polygon symbols.

21. Click the Properties tab and click the Symbol tab under it. Click the Color button and click No color. Change the Outline width setting to 0 pt and press the Enter key. Click Apply.

    On the map, the city features are no longer visible.

22. In the Contents pane, click the Cities layer to select it. Press the F2 key, change the layer name to City Labels, and press the Enter key.
23. On the Quick Access Toolbar, click Save to save the project.

Explore the multiscale map

Now that your layers are symbolized appropriately, you'll explore the map at small, medium, and large scales.

1. In the Contents pane, confirm that all the map layers are turned on.
2. On the ribbon, click the Map tab. In the Navigate group, click Bookmarks . Click the Glasgow bookmark to view the map at a medium scale.

   

   In the Contents pane, the maximum cluster value for the medical facilities has decreased. The primary road type appears on the map and as a symbol class in the Contents pane.

3. Go to the River Clyde bookmark.

   You should see the secondary roads draw on the map. If necessary, zoom in until your map scale is 1:50,000 or larger to see the tertiary roads. At this scale, most of the medical facilities are symbolized as individual features rather than clusters.

4. Pan and zoom to explore different parts of the map at different scales. When you're finished, go to the Full Extent bookmark.

Improve accessibility for color vision deficiencies

Color vision deficiencies affect approximately 8 percent of men and 0.5 percent of women. You'll check the map's accessibility for people with the three primary types of color vision deficiencies. The Color Vision Deficiency Simulator simulates the view of people with green-blind, red-blind, and blue-blind color vision deficiencies.

1. On the ribbon, click the View tab. In the Accessibility group, click the Color Vision Simulator drop-down arrow and click Deuteranopia .

   

   Deuteranopia (green blindness) is the most common color vision deficiency and results in confusion between green, red, and yellow hues. These hues are also easily confused by people with protanopia (red blindness). It's important that map symbols can be distinguished from each other in these different color environments.

2. On the ribbon, click the Map tab and go to the Glasgow bookmark.

   The Urban Rural Classification layer can still be interpreted by a person with deuteranopia. The color of the medical facilities symbol blends in more due to the confusion of red and green hues, but the symbol shape allows it to stand out. The main accessibility issue is with the motorway symbol.

3. Go to the River Clyde bookmark.

   The trunk, primary, secondary, and tertiary roads preserve adequate contrast with the background.

4. Go to the Full Extent bookmark.
5. In the Contents pane, under Roads, right-click the motorway symbol to open the color palette and click Cherry Cola.

   

   Motorways can now be distinguished on the map.

6. On the ribbon, click the View tab. Click the Color Vision Simulator drop-down arrow and click Protanopia (red blindness) and Tritanopia (blue blindness).

   

   The map can be interpreted by viewers with the most common color vision deficiencies.

7. Click the top part of the Color Vision Simulator button to unselect it.

   The map displays without simulated color vision deficiencies.

   

8. On the Quick Access Toolbar, click Save to save the project.

To make your map available to other ArcGIS Pro users, you can share it as a map package. To make it available to anyone with an internet connection, you can share it as a web map. Go to the Share a web map tutorial to follow those steps in detail. To learn about preparing a map layout for print or export, follow the Make a layout tutorial.