March 30 class

classwork 8

This example shows earthquake activity in Oklahoma on a map. The map is rendered with OpenStreetMap tiles and a vector overlay of state borders. The code uses the `d3.geoMercator` projection, `d3.geoPath`, and `d3.tile` to create the base map. It filters earthquakes from the USGS GeoJSON feed using `d3.geoContains` to show only quakes within Oklahoma. The quakes are drawn as crimson paths, while the street data comes from a TopoJSON source.

AAnaMal08

87% match

class-02 demo

A map of Oklahoma displays earthquake epicenters as red points on a blank state background, with county borders outlined in gray. The visualization filters earthquake records by a magnitude threshold and projects them using `d3.geoAlbersUsa`. The code loads GeoJSON and TopoJSON data via `d3.json` and renders the geographic features with `d3.geoPath`.

85% match

class-07 demo

This visualization displays a week of earthquake data overlaid on a map of Oklahoma, using a tile-based OpenStreetMap basemap for geographic context. It plots earthquake epicenters as crimson paths, filtering out events below a 2.5 magnitude threshold. The map uses a Web Mercator projection via `d3.geoMercator` and renders geographic features with `d3.geoPath`, including state and county boundaries from TopoJSON files. The basemap is composed of image tiles fetched from the OpenStreetMap tile server using the `d3.tile` API. Earthquake data is sourced from a local GeoJSON file rather than the live USGS feed.

85% match

fresh block

This visualization displays earthquake activity within Oklahoma using a tile map overlaid with the state’s street boundaries. It filters a week of USGS earthquake data to only those quakes located inside the state, rendering each as a crimson path. The code relies on d3.geoMercator, d3.geoPath, and d3.tile for the map, uses topojson to extract and draw the state mesh, and fetches both the US topology and live earthquake GeoJSON via d3.json.

AAnaMal08

Class 5

This visualization shows recent earthquake activity in Oklahoma, with each quake plotted as a crimson circle sized and colored by magnitude against a map of the state and its counties. The map uses a tile-less D3 v4 approach with `d3.geoAlbersUsa` projection and `d3.geoPath` to render TopoJSON boundaries. Earthquake data comes from the USGS live feed, filtered to visible points, with a categorical color scale for magnitude ranges and a legend showing counts per magnitude bin. A mouse-move handler displays geographic coordinates.

class-07 demo

This visualization combines OpenStreetMap raster tiles with vector data for Oklahoma using d3-tile and d3.geoPath with a Mercator projection. It overlays county boundaries from a TopoJSON file, drawn as black lines, alongside earthquake points from a USGS GeoJSON feed, rendered as semi-transparent crimson circles. The quakes are filtered by magnitude threshold, and the tile layer uses the d3.tile layout to compute visible tiles. Both the raster images and vector shapes are rendered as SVG elements.

fresh block

This example presents a map of Oklahoma with earthquake data from the USGS all-week feed overlaid as crimson points. The view uses a Mercator projection fitted to the state boundary and a base layer of OpenStreetMap tiles rendered through d3-tile. It draws state outlines with topojson.mesh and d3.geoPath, then filters the earthquake GeoJSON to show only events within Oklahoma using d3.geoContains. The map emphasizes spatial clustering of seismic activity within the state.

AAnaMal08

class-02 demo

This example shows a map of Oklahoma with earthquake locations plotted as semi-transparent crimson points, sized by their position on the map. The visualization filters earthquake data to only include events with a magnitude of 2.5 or greater. It uses d3 v4's `d3.geoAlbersUsa` projection and `d3.geoPath` to render SVG paths for state and county boundaries, sourced from TopoJSON data, while earthquake data comes from the USGS feed.