Package index • streetlamp

Ingest

Acquire force-month files from the data.police.uk archive without downloading whole snapshots, choose one version per force-month, and read crime, outcome and stop-count tables that carry a panel contract.

lamp_archive_download(): Download force-month files from the data.police.uk archive
lamp_archive_index(): Index of the data.police.uk archive
lamp_archive_register(): Register a locally downloaded archive zip
lamp_archive_snapshot(): Snapshot of the archive files held locally
lamp_list_versions(): List the archive versions of every force-month file
lamp_lsoa_vintage(): Detect whether LSOA codes are 2011 or 2021 vintage
lamp_read_crime(): Read street-level crime records from the archive
lamp_read_outcomes(): Read outcome records from the archive
lamp_read_stop_counts(): Count stops by area and month
lamp_s60_legislation(): Legislation label for Section 60 searches
lamp_select_version(): Select one archive version per force-month file
lamp_version_diff(): Compare the archive versions of one force-month file

Panel and coverage

Geography, population, the balanced area-by-month panel and the coverage audit.

lamp_adjacency(): Spatial adjacency for a set of areas
lamp_adjacency_from_nb(): Build an adjacency object from a neighbour list
lamp_boundaries(): ONS digital boundaries as an sf layer
lamp_changelog(): The data.police.uk changelog as a table of refresh and gap notes
lamp_coverage() lamp_coverage_compare(): Coverage audit: which force-months exist, and can be compared
lamp_panel(): Build an area-by-month panel of crime and stops
lamp_population(): Census 2021 usual resident population by area
lamp_revintage(): Re-vintage LSOA codes between 2011 and 2021

Treatment

Define what is being evaluated: a continuous stop intensity, an intervention in named areas, staggered adoption dates, or a dated shock.

lamp_detect_surges(): Detect surges in stop and search activity
lamp_treatment(): Define the treatment

Estimators

Panel estimators, each reporting its identifying assumption, clustered standard errors and the force-months it excluded.

lamp_allocation(): How stop and search activity follows recorded crime
lamp_crimes_prevented(): Convert an estimate into crimes prevented per thousand searches
lamp_did_staggered(): Difference-in-differences with staggered adoption
lamp_displacement_quotient(): Weighted displacement quotient
lamp_elasticity(): Elasticity of crime with respect to stop and search
lamp_event_study(): Event study around a dated intervention
lamp_spillover(): Own-area and neighbour effects estimated together
lamp_synth(): Synthetic control for a single treated area or force
lamp_twfe(): Two-way fixed effects estimate of the effect of stops on crime
tidy(<lamp_estimate>): Tidy a streetlamp estimate

Diagnostics

What the estimates are worth: pre-trend testing with power, and placebo tests in time, space and outcome.

lamp_design_audit(): Audit the support and assumptions of an intervention design
lamp_effect_summary(): Summarise effects using their joint covariance
lamp_elasticity_robustness(): Evaluate an explicit elasticity specification grid
lamp_placebo(): Placebo tests for a streetlamp estimate
lamp_pretrends(): Test and interpret pre-trends
lamp_trend_sensitivity(): Sensitivity to a specified differential linear trend

Simulation

lamp_simulate(): Simulate a panel with a known treatment effect
lamp_simulation_truth(): Recover exact expected outcomes from a simulated panel

Reporting

lamp_report(): Build a report on a panel and the estimates made from it

Plots and tables

The colours and theme every plot method draws with, and presentation tables with terms in words, intervals in brackets and rounded p values.

lamp_colours(): The colours streetlamp draws with
lamp_map(): Map a panel column, an area-level estimate or a synthetic control's donors
lamp_table(): A presentation-ready table from a streetlamp object
lamp_theme(): The ggplot2 theme streetlamp plots use

Contract

lamp_contract(): The panel contract

Bundled reference tables

Curated tables shipped with the package: crime and outcome classifications, national policy shocks, bank holidays and the ONS LSOA code lists and 2011 to 2021 best-fit lookup.

lamp_area_lookup(): Area hierarchy for 2021 LSOAs
lamp_bank_holidays(): Bank holidays in England and Wales
lamp_crime_types(): Crime type classification used by data.police.uk
lamp_deprivation(): Small-area deprivation indices for England and Wales
lamp_forces(): Police forces in the data.police.uk archive
lamp_lsoa_lookup() lamp_lsoa_codes(): ONS LSOA code lists and the 2011 to 2021 lookup
lamp_outcome_types(): Outcome classification used by data.police.uk
lamp_sample_panel() lamp_sample_boundaries(): The bundled sample panel and boundaries
lamp_shocks(): National policy shocks affecting stop and search or recorded crime

Cache

lamp_cache_dir() lamp_cache_clear(): Location of the streetlamp cache

Package

streetlamp streetlamp-package: streetlamp: Panel Econometrics for the Effect of Police Stop and Search on Recorded Crime