Analyse catnat theme from gaspar to give some elementary results

The following treatments are performed:

• catnat declaration are grouped by type of risks, and dates of events. This leads to event data.frame, for which number of communes concerned are summed.

• From event data.frame, number of events by year, month, and type are computed.

Usage

analyse_catnat(catnat)

Arguments

catnat

data.frame, data to be analysed

Value

A list of analysis (catnat, event, year, month, and type)

Author

Frédéric Grelot