Disaggregate marks via Analysis > and uncheck Aggregate Measures. Find the field and drag it into the view.In this case, is the field that contains our geometry, though you may also see a field called geometry: To displaying an ESRI Feature Layer, you will use a field that contains the geometry for each record. Paste in the URL copied from the web map feature layer details pageĪt this time, connections to ESRI ArcGIS Feature Layers automatically create an extract (no live connection), so to update your data, you’ll have to refresh the extract (automatically or manually):.In the data source section, click To a Server.In the Show Item Detail page, scroll down to URL.Under More Options, click Show Item Details.Find the desired layer in the ArcGIS Online web map, and click More Options.I’m sure to seek out metadata for my layer, so I fully understand critical details around the data source. Thermal Hotspots) observed by the NOAA’s VIIRS satellite. In my case, I want to use fire detection data (i.e. The data sources are governed and curated by experts, so I feel good about using one of these data sources in my analysis. In this case, I want to grab a layer from this US Wildlife Activity Web Map hosted in ArcGIS. Typically, in most publicly open ArcGIS web maps, you can click the layer of interest to find “more options” that eventually lead you to the service URL, which you will need to display the layer in Tableau. How to Access the Layersįirst, find the web map you want pull a layer from. There are many, many types of geographic data, but the data type of interest here is called a Feature Layer and is an ESRI format used to serve up geographic data in ESRI ArcGIS web maps. Yes, you can bring most of that into Tableau as well □. Further, it’s used very heavily in the public sector, and a majority of government entities use ArcGIS to develop, publish and host geographic data and maps for public consumption.įurther, with its Living Atlas of the World, it boasts perhaps the largest repository of free and public geographic data available, much of it curated by authoritative agencies from all over the world. Let’s see how! ArcGIS Web MapsĪrcGIS is a mainstay mapping platform used by many in mapping and GIS. This means we can easily grab this data and visualize it in Tableau. Lucky for us, in Tableau version 2020.2, Tableau lets you connect directly to published web map data layers from ESRI’s (or ArcGIS Online), the platform where most of these public maps are hosted. I want to dig just a little deeper than the web map allowed me to, and I would love to bring this data into Tableau. In my case, I am particularly interested in tracking the location of the most recent active fires detected by satellite. Of course, as an analyst, I cannot help but want to get this data and visualize it in my tool of choice. Here in Portland, I have the Clackamas County Wildfire Evacuation Zones on constant refresh as to view not just the extent of the fires, but also to know if I or nearby friends/relatives need to evacuate: It is late summer 2020, and I, like many others on the West Coast, am currently surrounded by wildfires and glued to various online web maps showing the various states of the world burning down around us.
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