OccToEvents_By_Chunk: Maps occurrences into events by chunks.
In ThreadNet/ThreadNet: ThreadNet

Thus function provides a way to map occurrences into events, so is is not necessary to interpret individual occurrences in isolation. Provides three ways to accomplish this mapping.

1 2	OccToEvents_By_Chunk(o, m, EventMapName, uniform_chunk_size, tThreshold, timescale = "mins", chunk_CF, thread_CF, event_CF, compare_CF)

`o`	a dataframe of occurrences
`m`	= method parameter = one of c('Variable chunks','Uniform chunks')
`EventMapName`	= used to store this mapping for visualization and comparison
`uniform_chunk_size`	= used to identify breakpoints – from input slider
`tThreshold`	= used to identify breakpoints – from input slider
`timescale`	hours, min or sec
`chunk_CF`	- context factors used to delineate chunks
`thread_CF`	- context factors used to delineate threads
`event_CF`	- context factors used to define events
`compare_CF`	= context factors used for comparison – need to be copied over here when the thread is created.