Scale multipliers

Scales multipliers by the proportional difference between Crime Survey England & Wales and Police Recorded Crime levels at a particular date.

scale_multipliers(multipliers, police_recorded_crime, csew_crime, date)

Arguments

multipliers

Multipliers for each police recorded crime offence as would be produced by calculate_multipliers.
police_recorded_crime

A tidied, cleaned version of police_recorded_crime as expected from clean_police_recorded_crime(police_recorded_crime)
csew_crime

Official statistics for aggregate Crime Survey England and Wales numbers, as included in package as csew_crime.
date

Date for year_ending columns, will select closest year_ending.

Value

Returns multipliers for each police recorded crime offence scaled by the respective levels of prc & csew crime.

Details

scale_multipliers proceeds

  1. Filter data to closest year_ending to date

  2. Calculate scaling factor between Crime Survey levels in 2015/16 and chosen date

  3. Calculate scaling factor for each offence group between PRC levels 2015/16 and chosen date

  4. Combine scaling factors and multiply by multipliers