image-methods {xps} | R Documentation |
Creates an image for each sample.
Usage
image(x, bg = FALSE, transfo = log2, col = gray((0:64)/64), names = "namepart", xlab = "", ylab = "", ...)
x |
object of class DataTreeSet . |
bg |
logical. If FALSE , intensities from slot data will be used;
if TRUE , background intensities from slot bgrd will be used. |
transfo |
a valid function to transform the data, usually “log2”, or “0”. |
col |
color range for intensities. |
names |
optional vector of sample names. |
... |
optional arguments to be passed to image . |
Creates an image for each array. For bgrd=TRUE
the distribution of the computed
background intensities will be shown; this can be useful to see potential density gradients
caused by hybridization conditions. For the computation of background intensities see function
bgcorrect
; it is suggested to use bgcorrect.mas4
to identify
density gradients.
For names=NULL
full column names of slot data
will be displayed while for
names="namepart"
column names will be displayed without name extension. If names
is a vector of column names, only these columns will displayed as image.
Data must first be attached to class DataTreeSet
using method attachInten
.
Christian Stratowa