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Table 1 Data transformations implemented in flowCore.

From: flowCore: a Bioconductor package for high throughput flow cytometry

 

Data Transformations

linear

ax + b

quadratic

ax2 + bx + c

natural logarithm

log e (x)(r/d)

logarithm

log b (x)(r/d)

biexponential

ae(b*x)ce(-d+x)+f

logicle

Te-(m-w)(e(x-w)-p2e-(x-w)/p+ p2-1)

truncate

xxa= a

scale

(x-a)/(b-a)

arcsinh

arcsinh(a +bx) + c

  1. Within these formulas, x is the variable corresponding to value being transformed, a, b, c, d, f, p, m, T, and w, are constants affecting the transformation function, e is the base of the natural logarithm (see [13] for details on the logicle transformation). Other transformations can easily be implemented in R.