bg.adjust {affy} | R Documentation |
An internal function to be used by bg.correct.rma
.
bg.adjust(pm, n.pts = 2^14, ...) bg.parameters(pm, n.pts = 2^14)
pm |
a pm matrix |
n.pts |
number of points to use in call to density . |
... |
extra arguments to pass to bg.adjust. |
Assumes PMs are a convolution of normal and exponentional. So we
observe X+Y where X is backround and Y is signal. bg.adjust
returns E[Y|X+Y, Y>0] as our backround corrected
PM. bg.parameters
provides adhoc estimates of the parameters
of the normal and exponential distributions.
a matrix