ArcGIS Online Analysis

A tutorial for learning some of the analysis tools in ArcGIS Online (AGOL)

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Section 1: Signing in

If you are an organization affiliate (i.e. a member of the Brock University community) follow these steps:

  1. Go to arcgis.com
  2. Click Sign in
  3. Click “Your ArcGIS Organization’s URL
  4. Complete the URL by entering the text brock

    Brock organization

  5. Click Continue
  6. Click BROCK UNIVERSITY
  7. This action should direct you to the Brock University authentication page. Enter your Brock credentials and click Sign in.

    AGOL homepage


Section 2: The Interface

  1. From the menus at the top, click Map. This action opens the default map viewer and should look like this:

    map interface

NOTE: If the default viewer does not look like the above screenshot, you may have to click ‘Open in new map viewer’ at the top right.

The New Map Viewer is composed of a dark toolbar on the left and a light toolbar on the right. Depending on the tool you have selected, various panels will appear.

  1. At the bottom of each toolbar there is a ‘collapse/expand’ button collapse expandClick these buttons to collapse or expand the menus.
  2. Click the ‘hide/show interface’ button hide show interface (bottom right of the map view) to hide/show all menus and panels at once.
  3. To search for a location, click the magnifying glass search tool from the lower right options. Type in a place or address and make a selection from the results. The map zooms to the location.
  4. Use the mouse scroll wheel or the zoom tools to pan and zoom on the map.
  5. The map viewer provides ready-made basemaps to choose from. Click the basemap button basemap on the left and explore the options. Before continuing, select the Light Gray Canvas option.
  6. At the top of the Basemap listing options, click Current basemap >

    image

  7. Click the eyeball icon to turn off the Light Gray Reference layer. This action turns off the placename labels.

    image

  8. To save your map, click the Save > Save as button save

  9. Enter a unique map name that does not include special characters.
  10. Click save. All of your work is saved in the cloud, making it accessible from any device with internet connection.

Section 3: Finding Data

  1. Open a new tab in Chrome and search for “Niagara Open Data”. The result is a portal for open data as it relates to the Niagara Region.
  2. Search the portal using the term “Licensed Child Care”
  3. Click the title for Licensed Child Care Centres
  4. Click the title for the ArcGIS GeoService entry

    image showing ArcGIS GeoService entry

  5. Right-click the URL and select copy link address

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Section 4: Adding a GeoService to ArcGIS Online

  1. Go back to the tab for ArcGIS Online
  2. Click Map to open the Map viewer (if necessary).
  3. Click image > Add layer from URL
  4. Use Ctrl-V to paste the URL from the clipboard
  5. Click Add to map
  6. The Licensed Child Care facilities will be displayed as points on the map using a circular point symbol and random colour.

    image

Section 5: Applying Filters

The default view shows Licensed Child Care Facilities for the entire region. Using the attached attributes, we can filter the data to only show records that meet certain criteria.

  1. With the newly added layer selected (you will know it is selected by the blue vertical bar to the left of the layer name in the Contents listing), click the Filter tool from the options on the right.
  2. Click + Add New
  3. Create the “Condition” statement: Municipality is St. Catharines
  4. Click Save.
  5. The map now reflects data for just the city of St. Catharines.

Section 6: Find by Attributes

Alternately, the data can be queried by using various “Select” tools such as Find by attributes and location

  1. From the right side, click Analysis Tools image

  2. Click Tools.
  3. Search using keyword “Find”.
  4. Select Find by attributes and location image

  5. Build a new query. The Query builder opens.
  6. Select the layer you want to build the query on (i.e. Licensed Child Care Centres)
  7. Select “Attribute Expression” and click Next.
  8. Enter the query statement NBH_ID=ST8 (this tells the software to isolate only the St. Catharines neighbourhood with I.D. “ST8”)

    image

  9. Click Add.
  10. Provide an output name.
  11. Estimate credits to see the ‘cost’ of this tool. Then click Run.
  12. A new feature layer is created reflecting only licensed child care centres in neighbourhood 8.
  13. Turn off (click the eyeball icon beside the layer) the original child care data layer.
  14. Use the zoom tools or mouse scroll wheel to zoom to the neighbourhood. It should look like this:

    image

Section 7: Style by Category

  1. Select the query output layer from the previous section.
  2. Click Styles. image

  3. Click + Field to add each field associated with an age group.

    image

    image

  4. Click Add.
  5. Scroll down (if necessary) and click **Charts and Size”” image
  6. Click Style Options > Colour
  7. Here, you can select a different colour ramp and adjust the shape:
  8. Under the Shape slider, shift the option to the middle so the symbol looks more like a donut. image

    symbol image

  9. Click Done, done and done. The symbol now represents the total number of spaces (size) and the break down of those spaces by age (colour).
  10. To view the legend, click legend image on the left.

    symbols and legend image

Section 8: Drive Analysis

  1. Click the Analyis tools image. (You may have to click the little back arrow to exit the active tool)
  2. Search by keyword Drive.
  3. Select Generate travel areas.
  4. The input layer is the layer representing Neighbourhood 8.
  5. Cut-offs > 2, click + Add (this represents a 2 minute drive time)
  6. Enter a name for the Result layer
  7. Estimate credits and click Run. The process may take a minute to complete. The result will look like this:

    image

Section 9: Enrichment

Using the newly created polygons, we will use the enrichment tool to calculate socio-demographic statistics for the study area. These data are calculated from various sources including Statistics Canada and Environics Analytics.

  1. Click the little back arrow to exit the current analysis tool.
  2. Search by keyword, “enrich”.
  3. Select Enrich Layer
  4. For Input Features, select the drive analysis output layer.
  5. Under Enrichment data, click + Variable. Here you need to make sure that Canada is selected as the country and then you can search by keyword to find the variables of interest. For the sake of this tutorial, select Households > 2023 Children at Home: Under 5 and select Income > 2023 Household Median income (current year$)
  6. Click Select.
  7. Enter a name for the output layer.
  8. Estimate credits and click Run.
  9. A new layer is added to the contents list image
  10. Click a feature on the map to see the pop-up with the added data attached.

    image

  11. With the enriched layer selected from the Contents listing on the left, click Styles from the right.
  12. Add + field > Children at home
  13. The result tells us where the higher populations live with children at home under the age of 5.

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Section 10: Make it “POP”!

This section is optional but your map will thank you for paying a bit of attention to the stylization of layers and basemaps.

  1. Click Basemap image and select Dark Gray Canvas
  2. Click Layers image and select the point layer representing child care centres and drag it up in the Contents listing.
  3. Click Effects image and toggle on Drop Shadow
  4. Select the enriched layer and click Properties image > Blending > Contrast > Overlay

    image

Section 11: Labels

Finally, we will add some labels and save our map.

  1. Select the layer representing child care facilities.
  2. Click Labels.
  3. Toggle Enable labels.
  4. Add Label Class > Select label field Program.

    image

  5. Save your map. image

  6. Update the share options, if prompted.

CONGRATULATIONS! You’ve successfully completed this tutorial introducing ArcGIS Online Analysis Tools! For more information, visit the Esri documentation.