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All American immigrants on a single dot map

Kyle Walker, assistant professor of geography at Texas Christian University created an interesting project. He took data about immigrants from the latest 2010 Census and mapped region or country of origin of each and every of them. The effect is a dot-density representation of the US immigrant population.

Screen Shot 2015-10-04 at 21.26.52

New York

Immigrant regions include:

  • Mexico (red);
  • Latin America and the Caribbean, other than Mexico (blue);
  • East and Southeast Asia (green);
  • South & Central Asia (aqua);
  • Sub-Saharan Africa (purple);
  • North Africa & Southwest Asia (pink);
  • Europe (orange);
  • Oceania (yellow);
  • Canada (brown)

In New York, we see that the majority of Manhattan’s immigrants are European, which the East/Southeast Asian cluster on the Lower East Side and the Latin American population above Central Park. Nearly all of the Bronx is dotted dark blue for Latin America, as is northeastern Brooklyn. Northwestern Brooklyn, Northwestern Queens, and Southeastern Queens are predominantly European, while Northeastern Queens is a mix of South Asian and Latin American.

This map was inspired by similar a similar visualisation of US racial segregation. instead of each dot representing one person it represents 20, and instead of the colors representing race they indicate a native region.

Tools used to make this map? A combination of R, QGIS, ArcGIS, and Python for data processing and Mapbox for the web presentation.

Screen Shot 2015-10-04 at 21.27.40

Los Angeles

Chicago Dot Map Immigrants


Cool map.

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Case study: Exploring the City of Darwin Map Portal

shutterstock_205962403_2In the light of our current Map Portal special offer, we present you a use case with a great story of public map implementation in a local government workflow. Local governments as well as different commercial and noncommercial organizations interested in placing their data on public maps are just discovering the benefits of informing and engaging people and communities in different activities with the help of geospatial technology.

City of Darwin is an exquisite example of a well elaborated approach of a local government toward informing and engaging its community with the help of informatic infrastructure. One of many means for ensuring the successful implementation of democratic principles such as information transparency and citizen participation in community lies in smart deployment of various software solutions.

Making the data about various projects, happenings and infrastructure – pools, playgrounds, schools  or waste disposal facilities publicly available on a map can help the citizens to find all relevant info in one place so they could have an easier access to everything their city offers them. Finding the right playground, clinic or even local government office on city portal increases the overall number of visits to the official city website and this not only helps the citizens with their needs but also creates a new channel for communication where the city officials could inform and engage their citizens about public projects, roadworks or local elections process.

Geographic information system tools increased popularity in local government projects toward its citizens demonstrates this premise, and City of Darwin took advantage of this insight creating an admirable City Portal for its residents.

City of Darwin portal was conceived as a web map on which City of Darwin citizens could find the information on city infrastructure and facilities.


Although they knew they need a way of engaging their citizens through a map, they needed a simple way of publishing all their data without having a dedicated in-house server. Also, some of the data had to be collected in the field first, which presented an issue within their existing software solutions because they used desktop programs which required having  data collected with smartphones and tablets downloaded and merged  back in the office. City of Darwin’s staff wanted to be able to update the data on infrastructure such as photos, links and working hours for facilities directly to the project.


An example of types of data collected by field crews: a playground photo

City of Darwin’s staff used GIS Cloud Map Portal to provide their community with rich and detailed information on public facilities and infrastructure. They have included information such as the location of childcare centers, the opening hours of public swimming pools and photographs of all of their community playgrounds, so that people visiting their website can find location, photos and other information. In addition they have included infrastructure data such as stormwater pipes, roads and footpaths on their web maps which is quite useful for field crews who are working on infrastructure maintenance and easily accessible through smartphones and tablets on the site. All this information was added to publicly available white-labeled map portal under City of Darwin’s logo and adjusted to their specific needs. Aside from the Map Portal, they have also used the Mobile Data Collection app to collect and update some of this data.

Info on library working hours is also available through City of Darwin Map Portal

Info on library working hours is also available through City of Darwin Map Portal


GIS Cloud’s Map Portal together with Mobile Data Collection was an optimal solution for City of Darwin map portal and data collection projects.

Mobile Data Collection application helped City of Darwin’s staff to make their workflows more efficient because it enabled them to collect and update data on the web map in real-time and with multiple users, therefore they avoided having to work in offline conditions. Now they can collect data that is immediately visible on their GIS Cloud Map Portal.

Summed up by Josh Forner:

“Portal has allowed me to create very detailed and information rich web mapping application with limited resources. Mobile Data Collection has allowed me to quickly deploy data collection projects that are user friendly for field staff.”


An infrastructure overview

The key points for which they would recommend GIS Cloud were:

  • GIS Cloud is very easy to setup. Many data formats are supported and web maps can be created in minutes.
  • The Mobile Data Collection application allows you to collect or update data in real time using customizable data fields.
  • Deploying web maps is quick and easy either by embedding a map or using the more advanced features of portal.

Read more at GIS Cloud blog.

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