ArcGIS

ArcGIS Online Visualization

This brief tutorial continues from ArcGIS Online Joining tutorial where attributes from a CSV were joined with points on the map. Here, we will create a visualization reflecting the diameter at breast height and tree species.

Setup Instructions

In preparation for this tutorial, you will need an organizational account with Esri. If you are a Brock user, you will sign into the software using your Brock credentials and the organization’s URL brock.maps.arcgis.com.

The Scenario

We will be mapping tree sample data for the neighbourhood of Bridgewater near Niagara Falls and Chippawa. Tabular data was joined with the geospatial data creating a powerful connection that will allow us to visualize attributes such as diameter at breast height (DBH) and tree species. Although this example uses point data, the same general steps could apply to boundary files such as census tracts or municipal boundaries and associated tabular data.

Visualization in ArcGIS Online

In some respects, visualization in ArcGIS Online offers more options and simpler workflows than the desktop version (ArcGIS Pro). Continue this tutorial to learn more.

1. Go to https://arcgis.com and sign in to your ArcGIS Organization, brock.maps.arcgis.com > Brock university (when prompted with the Brock authentication page, enter your Brock credentials).
2. Click Map at the top of the screen.
3. Click Add and change the folder from My Content to ArcGIS Online.

4. Enter the keywords “Chippawa tree JOIN tutorial” and click the plus sign to add the layer to your map. Alternately, you can add the file created in a previous tutorial (TreeDataChippawa).

   

5. Click the back arrow to return to the layer listing 

Applying a Filter

To start off, we will filter out the species of trees that include ‘maple’ in the species description.

1. Click the Filter tool from the right side menu  . The Filter dialogue box appears.

2. Click 

3. From the dropdown options, create the following condition:

   

4. Click Save.

   

The map now shows all trees that contain the word ‘Maple’ in the species description. (NOTE: use a capital “M” in “Maple”)

Symbols

1. Click the Styles button  from the menu to the right.
2. In the Styles pane, make the following selections:
3. From Step One, click  then select the field to map, in this case, select TreeSpecies. Click Add.
4. Click  again and select DBHTrunk. Click Add. The symbols are updated with colours representing species and proportional symbols representing diameter.
5. From Step 2 of the Styles pane, Pick a Style, select Style Options for types and size. There will be 2 options: one for unique symbols and one for counts and amounts.

6. Click style options for unique symbols.

   

7. Click the colour ramp for symbol style.

8. For Outline Colour, select the black option. 

9. Click Done then click the Counts and Amounts style options.

   

10. Scroll, if necessary, and change the upper size range to 20.

    

11. Click Done twice.
12. To give the map a little ‘pop’, click the effects options .

13. Toggle on the Drop Shadow option.

14.  

    Click  to view the legend.

    

Save and Export

1. Click the Save button from the left hand menu and save the map with a unique name.