Geospatial Research
Columbia GSAPP — NYC

Proximities — mapping diversity.

How can self-determination foreground the US census?

Researcher ● 2 months

Transdisciplinary Research ● UX Research ● Urban Design

Overview

Proximities is a mapping study of identity in Harlem which led to a new methodology proposal for the US census database. The goal was to develop an ethnographic representation of a neighborhood to develop mapping skills. It lead to a critical analysis of a crucial government dataset.

I teamed up with Andrei Mikhail Zaiatz Crestani, a urban scholar visiting from Brazil. My role was focused on identifying critical geographic concepts and relevant tools, as well as data visualization. Proximities was developed over the course of 8 weeks.

Case study — 2 minutes
OverviewProject DescriptionMapping MethodologyUrban EthnographyData Collection
A more nuanced US census could enable greater citizen engagement.
Project Description

ASSESSMENT & CRITICAL ANALYSIS

This project began with an assessment of current ethnic and racial categories commonly used in American data collection, statistic design, and mapping. The assessment led to a critical analysis summarized in the three points detailed below: (1) incommensurableness, (2) exclusivity, and (3) criminal history.

INCOMMENSURABLENESS

As it currently stands, the US census features five ethnic/racial categories.

  • White
  • Black
  • Hispanic
  • Native American
  • Asian

Respectively, they correspond to the following types:

  • Skin Color (White)
  • Skin Color (Black)
  • Culture (Hispanic)
  • Culture (Native American)
  • Geography (Asian)

These categories have no common standards of measurement — they are incommensurable, like apple and oranges.

EXCLUSIVITY

The current categories do not take in consideration ethnic, racial, and cultural diversity. They make it complicated to indicate any type of ethnic mix and other nuances.

Criminal History

The “fives races of humankind” were laid out in 1790, 75 years before the Thirteenth Amendment abolished enslavement and involuntary servitude. The categories were tools of racial crimes that still remain unrepaired today.

Driving Questions

  • How do we deconstruct the way diversity is mapped?
  • How can we define innovative methods of mapping to give visibility to groups and minorities that have historically been made invisible?

We became interested in mapping proximities between groups instead of racial categories.

6pm on 125th Street and 8th Avenue on a weeknight in October 2016

RACIAL CATEGORIES

The three sets of maps below display current standard methods of mapping ethnic and racial difference in the US. We studies these maps as a starting point to propose a new methodology.

Mapping Methodology

From Pointillism to Intersections

We decided to work with the first of the three maps above which features a point of color for each individual fitting in a single category. The points aggregate to show areas that have categorical tendencies. These points can be used to map intersection between categories, or in other words, proximities among ethnic and racial difference. The animated image below explains the mapping process for proximities.

Urban Ethnography

Harlem

This methodology was used to make an urban ethnography of a neighborhood currently undergoing a racial transition — Harlem.

FROM NATION TO NEIGHBORHOOD

We situated our urban ethnography of Harlem with the proximity mapping technique at the scale of the nation, and zoomed into Manhattan and Harlem. View below.

Data Collection

Capturing Data on the Street

We became interested in comparing the census dataset with people on the street. We decided to focus our study on 125th street as it has most pedestrian traffic. We also decided to collect data about people's interactions.

FULCRUM APP

We worked with an iPhone and Android app called Fulcrum to record information about the interaction of people we saw on the street. The app allows to enter information based on a query system and attached to a GPS location. The screen shots below detail the query we built.

The data collected on Fulcrum was exported in a spreadsheet. The screenshot below gives an overview.

The spreadsheet was visualized through OpenStreetMap as seen below. The racial categories were used to make a classic colored map which then enables to map proximity (view second map below).

STREET ACTIVITY MAPS

The following maps visually display data collected about people's behavior in various parts of the street: (1) Way of Interacting, (2) Duration of Interaction, (3) Type of Interaction, and (4) Time of Day of Interaction

This data was further visualized with the following maps.

THE END
Thank you for your time and attention. Here are other case studies.

THANK YOU FOR TAKING INTEREST IN MY WORK

Let's connect!

Drop me a note at v.lechene@columbia.edu.

Proximities
Project DescriptionMapping MethodologyUrban EthnographyData Collection