Cloud Mapping & Story Maps 2021

• • Log in using your standard Clemson username and password.

2. ArcGIS Online Basics

Once you are signed in, you should see your name on the right top corner. To create your first interactive map, in the top menu select Map

ArcGIS Online will open to a default map showing North America.

In the top right corner, select Open in new Map Viewer.

Navigation

Close the Layers menu by clicking the X.

Practice zooming in and out using the roller button in your mouse. If you don't have a mouse, these are two additional methods you can use:

• • Click the + and - buttons on the bottom right corner of the map,

  • With a mouse, press the middle wheel

Notice as you zoom in, the amount of information gets added to your screen.

Here are ways to pan on your map:

• With a mouse, press the left click button and drag the mouse to where you want to go

  • Use the arrow keys to move up (North), down (South), left (West), or right (East).

Finding addresses

You can search for any place or address and zoom to that particular region. To do that, in the right menu, select Search. A Find address or place box appears on your top right corner. Type Clemson and hit Enter. Notice how the map finds and zooms directly into the Clemson area. Try looking up 2 more places of your choice that are not a city (e.g. Issaqueena Lake or Ravenel Elementary).

Basemaps

The collection of background images that appear as you zoom in and out in your map is called basemap. This is a foundational layer that can be displayed with a variety of other data. These have different styles, such as political maps, street maps, topography, or satellite imagery.

In the black menu on your left, select the Basemap button. Notice the default basemap is the Topographic map. Select Imagery and zoom into Memorial Stadium.

On your own, try a few different basemaps, such as Navigation and Light Gray Canvas.

Leave your basemap to be light gray canvas for the next exercise.

3. Your First Interactive Map: Missing Persons in South Carolina

The recent national media attention to the case of Gabby Petito has highlighted the need to inform the public about missing people without a systemic bias that leaves behind people of color.

For this exercise, I downloaded a dataset of current missing people from the National Missing and Unidentified Persons System (NamUs). Download it to your computer locally.

Open the file with Excel to explore its content.

3.1 Adding a List of Places

To add the dataset to ArcGIS Online, in your map, click the three lines on the top left corner next to Untitled map to bring the main menu (see figure on the right).

In the docked panel that opens, select Content. It's OK to leave your unsaved changes. The Content section is where you store all your personal data, you can also see data from groups you belong to, data that others have published at Clemson, and ultimately, the Living Atlas (we will talk about this in a later section).

Click on the New item button on the top left corner. Drag and drop the CSV file or click on Your device and navigate to where you saved the data.

Select Add Missing persons.CSV and create a hosted feature layer. Click Next.

Leave all fields to be included in the hosted feature layer. Notice the type matches the nature of each field. Click Next.

Location settings: select Addresses or place names,

Location fields: Location information is in multiple fields (leave the defaults)

Click Next. In the item details, add missing in the tags section, and for summary, copy and paste this: Number of missing persons as of October 7, 2021 in South Carolina. Click Save.

In the review locations window, click No.

Open the data in the Map Viewer as shown in the figure on the right.

The map viewer opens with the layer added and the properties dialog.

Close the Layers panel.

Change the Basemap to Human Geography Dark Map.

3.2 Symbolizing Data in AGOL

In the properties window, click Edit layer style.

Under Current Style - Location (single symbol), click Style options. Click on Symbol style.

In the symbol window, click on the drop-down menu to change Basic Shapes to Firefly. Select a color of your choice. Click Done to see your changes.

In the right menu of the screen, click on Effects and explore what they do.

Next, select clustering on the right menu, and click the Enable clustering button.

In the clustering menu, select Pop-ups:

Title: Missing persons: {cluster_count}

Text: This cluster represents {cluster_count} people missing in this area

Close clustering.

Save your map by selecting the Save and open option on the left menu. Select Save.

Title: Missing persons in SC as of Oct 7, 2021

Tags: missing (hit Enter)

Summary: locations of people missing in SC according to NamUs database.

Click Save map button

Making a different version:

Save the map again as Missing persons in SC by gender as of Oct 7, 2021

Go to Styles:

Choose attributes: Field - Sex. Click Add. Click on Style options

Symbol style: blue for male and pink for female (click on the symbol to the left of each one of them, and on the symbol window, scroll down to the Fill section, select the appropriate color).

Go to the properties menu on the top right corner, scroll down, change blending to Lighter, and transparency to 25% to see overlapping features. Close properties. Save your map.

3.3 Customizing the Pop-up Window

In the right menu, select Fields. Click on Date_Modified to edit it.

Display name: Change it to Date record was modified

Click Done.

Do the same for the other fields as shown on the picture on the right.

• • You will be asked to Enter your ArcGIS organization's URL.

  • Type clemson in the box, so that your URL is clemson.maps.arcgis.com and click Continue.