Content in GeoNet, The Esri Community | GIS and Geospatial Professional Community

Why are some countries not listed in the living atlas?

geonet@esri.com — Tue, 23 Jun 2020 08:04:48 GMT

I tried using Nigeria in the living atlas but couldn't found it.

Census Tracts entirely within another Census Tract

geonet@esri.com — Mon, 22 Jun 2020 22:01:05 GMT

Hi,

I am working with a U.S. Census Tract layer. I am just wondering why there are tracts entirely within another tract when, in general, the territory is divided by partitioning the space into a number of simple rectangular regions, divided up by axis parallel (more or less) splits.

Maybe the explanation is related to the fact that the inner tracts represent the population and the outer tracts are large agricultural areas?

Zoom in:

Thanks,

Marcos Keyser

Is it possible to our organization create a streets basemap without the streets on it? We like the streets basemap but the roads are not accurate

geonet@esri.com — Thu, 11 Jun 2020 20:17:33 GMT

We use the streets basemap in our interactive maps but the streets and labels are often inaccurate so we overlay our roads layer on it but it is messy. It would be nice to have the streets basemap with no streets and just overlay our own roads centerline over that.

Why is there no worldwide OSM building coverage in LAOW?

geonet@esri.com — Tue, 02 Jun 2020 21:55:26 GMT

We are trying to build an app using the JSAPI and want to have worldwide coverage of buildings. In order to show them in 3D we have to access the FeatureLayer since we cannot extrude the vector tile buildings from MapBox (which is worldwide) since Esri does not support that (as asked here: fill-extrusion Vector Tile Layer style gives an error: unknown vector tile layer ). If you search in the Living Atlas for OSM Buildings you only get authoritative data for North America, Central America and Africa.

Is there another worldwide service we could use or a workaround for the vector tile fill-extrusion functionality? Are there plans to add the rest of world to LAOW?

World Urban Areas Missing Details

geonet@esri.com — Tue, 02 Jun 2020 21:54:54 GMT

I'm currently using the feature layer World Urban Areas https://www.arcgis.com/home/item.html?id=2853306e11b2467ba0458bf667e1c584 but I'm having trouble finding details about the layer such as the criteria that was used to set the boundaries of urban areas as well as how the "Rank" is defined for each urban area. These details are crucial for me in order to use the data in a meaningful way and I would really appreciate any reference to how the data was defined and created.

Thanks.

Drainage lines precomputed by Esri

geonet@esri.com — Tue, 02 Jun 2020 21:54:40 GMT

The ArcGIS Online Create Watersheds tool, permits to extract water catchment areas for points as input layer, based on

drainage lines precomputed by Esri

Are these drainage lines available in any format?

I just found Esri Hydro Reference Overlay, but it's a very small scale data, and I don't think it's the data the watershed tool is based on.

Thank you

Roberto Rossi

Padua University

Bivariate simbol map

geonet@esri.com — Tue, 02 Jun 2020 21:52:01 GMT

Quiero hacer un mapa que muestre dos variables con symbols graduates similar al que adjunto en imagen

Que metodos usan

Uno es simbolos graduates y el otro metodo.

Quiero presentar population y porcentajes de bamboo.

error from Create Watersheds tool

geonet@esri.com — Sun, 24 May 2020 17:49:33 GMT

Hey. I have a question, in the description of this tool #Create watersheds (https://doc.arcgis.com/ru/arcgis-online/analyze/create-watersheds.htm#ESRI_SECTION1_E2A5D2205CC242BB92693EED134AEC28) it is written that the DEM 90m HydroSHEDS for the whole world is between latitudes 60 N and 56 S. My territory is in the indicated latitude. But I get the following error. Help me please

demographics update 2020?

geonet@esri.com — Fri, 22 May 2020 22:14:10 GMT

I assume the update for demographics for 2020/2025 will come out in a month or so as usual.

My question is: is it "in the can" already? Or will it contain--especially for 2025--updates from the current COVID-19 economic implosion?

We are a healthcare company, so we are looking for any type of resource that might estimate how layoffs will affect our payor mix: e.g. will there be more Medicaid coming in and fewer insured patients coming in for the next year? 2 years?

AZ is tough--it was doing great economically and population growth, but COVID-19 blew up tourism, and people can't move here if they can't sell their houses back in the cold, snowy midwest.

Any guidance on how to forecast effects? Or with good luck, the implosion will only last one season, and things will get back to normal by 2021 demographics?

Anybody have any thoughts on this matter? Thank You.

Explore air quality in the US with content from Living Atlas

geonet@esri.com — Tue, 19 May 2020 20:36:50 GMT

Air quality impacts us all.

The air we breathe is full of particles that come from factories, cars, construction sites, and many other sources. These particles can get into our lungs and even our bloodstream to cause serious health issues. Organizations such as the Environmental Protection Agency (EPA) and NASA provide information about the air we breathe in order to provide a data-driven approach for regulations and guidelines.

ArcGIS Living Atlas of the World contains a wide range of layers, maps, and stories that help communicate what air quality in the US was like in the past, and how it is currently.

There are many different ways to explore air quality with content from ArcGIS Living Atlas of the World. A few of those ways are:

Current Air Quality
- Air Quality Index (AQI) by the Environmental Protection Agency (EPA) and AirNow
- "The AQI is divided into six categories. Each category corresponds to a different level of health concern. Each category also has a specific color. The color makes it easy for people to quickly determine whether air quality is reaching unhealthy levels in their communities." - AirNow
- Find all EPA layers, maps, and applications in Living Atlas by clicking here.

Current PM 2.5 concentrations
- The OpenAQ Community reports recent PM 2.5 concentrations
- Every day activities such as driving, burning coal for electricity, wildfires, running factories, even cooking and cleaning, release particles into the air. Besides being an irritant, small particles of 2.5 micrometers or less (PM2.5) are a health hazard since they can get deep into the respiratory system and damage the delicate tissues.
Smoke Forecasts
- National Weather Service 48 hour forecast
- Forecasts of smoke can help us protect vulnerable populations from potential health risks.
Historical PM 2.5 concentrations
- NASA's Socioeconomic Data and Applications Center (SEDAC)
- 1998-2016 PM 2.5 values were analyzed over space and time at the state, county, congressional district, and 50 km hex bin levels in order to investigate trends and statistical hot spots.
- To see the full collection of maps and see how air quality is changing in your area, visit this gallery or all historical air quality content in Living Atlas.
- To learn more about the methodology behind the analysis, view the blog post about these layers.

To learn more about air quality in the United States and the content listed above, check out this story map.