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Thursday 16 September 2010

Identifying different London Ward violence profiles

I have been analysing violence in London based on the demand profile for each council ward using police incidents that have been resulted as including "violence against person". I have discovered by this analysis that the period after midnight to 4am on Friday night Saturday morning and the same period Saturday night Sunday morning can be used to group wards. I am developing that idea further in this post.


London 2009 police "violence against person" incidents on Saturday and Sunday midnight to 4am showing council wards
 The dark blue/purple show the most violent wards in London after midnight on Friday and Saturday nights. I have not checked each one but I think the blue/purple and red/purple cover most of London's major night drinking and entertainment venues.

London 2009 police "violence against person" incidents NOT on Saturday and Sunday midnight to 4am showing council wards
 This map shows the violent areas of London for the rest of the week. Some wards appear purple on both charts but others change quite markedly.


London 2009 showing the percentage of  police "violence against person" incidents on Saturday and Sunday midnight to 4am showing council wards
 This map is slightly different. It is not based on the number of incidents, it is based on the proportion of incidents that occur in the early hours of Saturday and Sunday mornings. This allows the profile of less violent areas to be judged. It also justifies my decision to carry out MPS wide analysis to help interpret my Camden Borough data because it shows that the Gospel Oak one of only three wards (very light green) that have the lowest percentage of incidents that happen in the weekend period under analysis.

Next stage is to see if this data provides good clustering and classification material.

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