Emerging space-time cluster of aggravated assault in Columbus, Ohio

Note: Click the layer button (upper right corner of the map) to switch base map layers. 4 types of layers are provided (Dark Matter, Aerial, World Imagery, Water Color)

Details of the emerging cluster:

Emerging space-time cluster of aggravated assault in Columbus

Note: Click the layer button (upper left corner of the map) to switch base map layers. 2 types of layers are provided (google map, google satellite imagery). Drag and drop the yellow Pegman (lowwer right corner of the map) onto any street to access google street view

Detect emerging space-time cluster of aggravated assault in Columbus, Ohio

Purpose of the app

(1) Interactive web maps to visualize crime incidents.

(2) Emerging space-time cluster detection.

(3) Plot the location of detected cluster as popup on the interactive map.

(4) Plot other results of cluster detection as graph and table.

Layout of the app

There are 3 tabs. The 1st tab plots an interactive web map created using Leaflet for R to visualize spatial information of aggravated assault crimes in Columbus in 2000. A slider bar is designed to allow visualizing crime incidents according to the selected date range. A button is designed to allow running the cluster detection model and plot corresponding results on the map and graph/table. The 2nd tab plots an interactive web map created using googleVis. This map allow users to use Google Street View from this shiny app. The 3rd tab is about the detailed app information.

Map APIs used in the app

(1) Leaflet 1.0.0

(2) googleVis 0.5.10

Development Environment

(1) R 3.2.2

(2) RStudio Version 0.99.489

(3) Chrome Version 47.0.2526.80

(4) MS Windows 7

Author info

Li He

Ph.D. Candidate (supervized by Prof. Antonio Páez)

School of Geography & Earth Sciences, McMaster University

Email: hel36@mcmaster.ca


Designed and developed by Li He
Dec 10, 2015