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Learn how to add layers and conduct simple manipulations in ArcMap (ArcGIS Desktop) and ArcGIS Online

Adding the base layer

Open the Las Vegas Geocommons API

Select the first layer you wish to add to the map. I suggest that you start with a BaseMap.

Click on BaseMaps

Click on BaseMaps/CLVBaseMap (MapServer)

Select View In: Map

The map will open in ArcGIS Online. It may ask you to save it. Give it a name and at least one tag ("Las Vegas" is sufficient)


Adding additional layers

Let's add four more layers to the map:

  • Fire hydrants (point feature)
  • Sewer main (line feature)
  • Sewer manholes (Point feature)
  • Street lights (point feature)

Return to the Home screen by clicking on the Home link on the top left of the page.

Adding the Fire Hydrants layer

From the home page, click on PublicSafety, then select  PublicSafety/Fire_Hydrants (MapServer)

Right-click on the HYDRANTS layer, and select Copy link address

Return to your ArcGIS Online Map. 

On the top left, click Add --> Add Layer from Web

In the pop-up window, paste (ctrl+v) the link into the URL window, and click ADD LAYER.

Although the layer is added, it will appear faded (grayed out) under the contents tab. This happens when the extent of the map is too broad to view the layer, so you will need to zoom in.

Type "Community College Drive" in the search bar, and select the Community College Dr, Las Vegas, NV, 89107, USA option. This will zoom you to our study area, which is the CSN Charleston Campus. Once zoomed in you will see the added layer of fire hydrants appear as dots. 

Adding the remaining layers

Add the remaining layers by repeating the same process of

  1. locating the layer in the Las Vegas GeoCommons API
  2. Right-click on the layer and selecting Copy link address
  3. Add the layers to your map by selecting "Add layer from web" and pasting the link into the URL window.

Both the sewer mains and manholes layers are located under Exiting Infrastructure --> SanitarySewer.

The street lights layer is located in PublishedLayers --> Streetlights.

Remember to save your map often!

In the end, your map will look something like this:

As you can tell, there's a lot of data on this map that is unnecessary for your project - pretty much everything outside the  CSN Charleston campus's immediate area. Keeping this data will make your file huge and may be confusing for field data collection and presentation. 

© University of Nevada Las Vegas