PLSR_from_file: Partial Least Squares Reg from file
In graeberlab/small.cell.project: small.cell.project

Writes out loadings

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PLSR_from_file(file, sample.names, sample.type, y.response,
  title = "PLSR", comps = 5, scale = F, comp.x = "comp.1",
  comp.y = "comp.2", labels = F, varimax = F, varimax.comp = 5)

`file`	file for X matrix
`sample.names`	vector of names of the samples
`sample.type`	vector of sample groups
`y.response`	numeric vector of response values in same order as samples
`title`	title of the plot
`scale`	default=F
`comp.x, comp.y`	comps to display
`labels`	label the plot, default = F
`varimax`	performs varimax
`comp`	number of components to compute