| 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