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Select a Base Layer Map

Once you open a web map, you can change the base layer (basemap) by using the Layer Manager. To open the Layer Manager, select the expander arrow on the right side of the window. For example, change the basemap to Light Gray Canvas Map. This map is useful for displaying vector data.

Layer Manager with Light Gray Canvas Map base layer selected

Close the Layer Manager.

Web map with Light Gray Canvas Map base layer

You can also specify the base layer programmatically when you open the web map, by including the name of the layer as an argument to the webmap function. The following example opens the web map, displaying the Light Gray Canvas Map. For a list of all the named base layers supported, see the webmap function. The examples includes the optional parameter Wraparound that causes the map display to be truncated at the -180 degree and +180 degree meridians. By default, maps are continuous.

webmap('Light Gray Canvas Map','WrapAround',false)

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