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<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" lang="" xml:lang="">
<head>
<title>Looking at Crime in St Louis</title>
<meta charset="utf-8" />
<meta name="author" content="Jim Donovan" />
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<textarea id="source">
class: center, middle
background-image: url(images/police.jpg)
background-size: cover
# St Louis Crime
<img src=""/>
## Carjacks and Homicides in the Gateway City
.large[Jim Donovan | Stl DS & AI Meetup | 14 Jan 2020]
<br>
github: https//:donojazz.github.io/Crime
---
class: inverse, top, center
# Concerned About Crime in St Louis?
--
## Three Major Factors Key to Understanding Crime
--
**Type of Crime**
<br>
--
**Location of Crime**
<br>
--
**Time of Day Crime Occurred**
---
class: inverse
## What Led Me to Do This Study
.center[]
---
class: inverse
<br>
**Find an interesting project to get a greater understanding of R.**
.right[]
--
<br>
**Find a project to gain greater understanding of geospatial analysis techniques.**
.right[]
--
**Finally, as a response to a channel 5 news report on increased carjackings (Sep 2018)**
.right[]
--
<br>
**So, decided to investigate for myself**
.right[]
---
class: inverse
.center[ **"I would give the Chief an **"A"** for his performance."**]
<br>
.center[]
---
class: inverse
.center[ **"Chief Hayden Rectangle"** ]
.center[]
.center[
From intersection of Goodfellow and MLK.
North along Goodfellow to W. Florissant.
Then Southeast along W. Florissant to Prarie.
Then southwest along Prarie/Vandeventner to MLK.
Back to MLK and Goodfellow. ]
---
class: inverse, center, top
<img src="images/data-vs-information-300x126.jpg" width ="800", height = "200">
<br>
<br>
# My Background
---
class:inverse
<img src="images/mitreImage.jpg" width ="700", height = "200">
# .center[ MITRE Corporation (FFRDC) ]
- Network and Systems Engineer
- Transportation Systems Consultant
- Enterprise Architect
- Integrated transportation systems troubleshooter (28)
+ Data Analyst/Investigator/CSI
- Service Oriented Architecture (SOA) Schema Developer
---
class: inverse
# .center[This Was A Great Learning Project]
**Used plenty of R Tools (21 libraries)**
--
<br>
**Tidyverse + **
- Data.table, DPLYR, STRINGR, FORCATS, LUBRIDATE, GGPLOT2
--
<br>
**Geospatial libraries **
- SP, SF, RGDAL, Leaflet, MAPVIEW, PLOTLY, GGMAP, Tidycensus, Censusxy, OpenStreetMap
--
<br>
**Github **
- Github Pages, Website, Jekyll
--
<br>
**Repeatable Research **
- RMarkdown, Xaringan, Reveal_js, R-flexdashboard
---
class: inverse, center, middle
# **Tidyverse Methodology**
<br>
<br>
<br>
.center[]
---
class: inverse
# .center[What I Learned About Police Data]
--
Data is inconsistent and needs a lot of work to "TIDY"
- Plots and addresses missing
--
Duplicate crime identifiers for same crime type
- STMP Claims that records keys are unique - not really
--
Multiple data sets offered
- Police Reports Division offers data (PDF)
- Police Crime Analysis offers (PDF or CSV)
--
Uniform Crime Reporting (UCR) System very inconsistent across cities
--
Arbitrary descriptions of crimes (free **text** descriptions)
---
class: inverse
# .center[Started with Carjacking Then Moved to Homicides ]
--
Started downloading data in October 2018
- Eventually collected data for 2 years
--
Started with carjacks due to the **Channel 5** news story
- Moved on to homicides - a small change in data with same analysis structure (crime code - 38111 to 10000)
- Potential to create **Shiny** App for other crime codes
--
Discovered "Hot Spots" with heatmaps, custers, and histograms
- Found significant diferences between "Crime Box" and crime locations
--
Discovered that 70% of homicides occurred in 22 of the neighborhoods
--
Noticed that Hayden Rectangle missed a lot of the crime **"hot spots"**.
- Just like **St Louis Dispatch** (Janelle O'Dea) stated last Sunday
---
class:inverse, center, middle
# .center[**Go to Analyses**]
.center[]
</textarea>
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