zhenzhen wang

@ZhenzhenWang918·3 public vizzes

SF Arrests

This visualization maps the last week of arrests in San Francisco, using a conic equal-area projection to display the city's analysis neighborhoods as the basemap. Arrest locations are drawn as circles, with an interactive tooltip revealing the neighborhood name on hover and a details panel showing incident information. The example combines GeoJSON basemaps and streets with live SODA API queries for the arrest data, all rendered through D3’s `d3.geoPath` and `d3.geoConicEqualArea`.

Mar 27, 2020

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Gun Deaths in Florida

This visualization shows annual gun-related murders in Florida from 1989 to 2016. A red area chart and black line overlay highlight changes in the number of firearm homicides, including a prominent annotation marking the 2005 “Stand Your Ground” law. The chart uses D3 v5 to read a CSV file, map years to a linear x-axis, and total firearm deaths to a y-axis scaled from zero. SVG elements—an area path, line, circles, axis ticks, and note—are drawn via the `d3.area`, `d3.line`, `d3.axisBottom`, and `d3.axisLeft` generators. Data originates from the Florida Department of Law Enforcement.

Feb 21, 2020

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Mobility Rate Bubble Chart

This bubble chart shows the relationship between median parent household income and mobility rate for California universities, with circle size representing average cohort size and color indicating trend in parents from the bottom income quintile. The visualization uses D3 v5 with SVG rendering, employing scales including scaleSqrt for circle radius and scaleDiverging with interpolateGreens for color. Data from Opportunity Insights is filtered to California institutions, sorted by count so smaller bubbles draw last, with average lines and labeled highlights for notable universities.

Feb 14, 2020