extract_tsne_rectangle: plots the output of a tSNE run on ICS flow data, overlays...
In ptvan/Pmisc: Phu's Misc Functions

plots the output of a tSNE run on ICS flow data, overlays user-specified window, and return cell events within that window. Also perform t.test() on extracted events

extract_tsne_rectangle(
  dat,
  x_min,
  x_max,
  y_min,
  y_max,
  antigen,
  marker,
  polyDegree = 0,
  facet,
  title
)

`dat`	RTsne output matrix
`x_min`	coordinate of bounding box to extract events
`x_max`	coordinate of bounding box to extract events
`y_min`	coordinate of bounding box to extract events
`y_max`	coordinate of bounding box to extract events
`antigen`	the antigen to subset, must exist in 'dat'
`marker`	the marker to facet on
`polyDegree`	ICS polyfunctionality degree of data to extract
`facet`	metadata to facet on, must exist in 'dat'
`title`	plot title