I am trying to make a histogram that counts up occurrences through time, binned by year, but I am having trouble specifying the bin size. I attempted to feed this in as the size argument to the xbins parameter:
'# size as a difftime magnitude
xbins = list(size = as.difftime(365,units = “days”))
'# also tried size as “M12”, the string value that represents one year
'# (as used for the layout > xaxis > dtick parameter)
xbins = list(size = "M12)
Neither of these worked. Any ideas for how to overcome this problem?