R version 4.5.0 RC (2025-04-04 r88112 ucrt) -- "How About a Twenty-Six"
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> # channel-test.ssc
> library(PreProcess)
Loading required package: oompaBase
> 
> suppressWarnings( RNGversion("3.5.3") )
> set.seed(732657)
> # simulate a moderately realistic looking microarray
> nc <- 100			# number of rows
> nr <- 100			# number of columns
> v <- rexp(nc*nr, 1/1000)	# "true" signal intensity (vol)
> b <- rnorm(nc*nr, 80, 10)	# background noise
> s <- sapply(v-b, max, 1)	# corrected signal instensity (svol)
> ct <- ChannelType('user', 'random', nc, nr,  'fake')
> raw <- Channel(name='fraud', type=ct, parent='', vec=v)
> subbed <- Channel(name='fraud', parent='', type=ct, vec=s)
> rm(nc, nr, v, b, s)		# clean some stuff
> 
> summary(subbed)
fraud, a microarray channel object
Parent object: NA 
Microarray type: user random 
Labeled with: fake 
Design size: 100 by 100 
Design information object:  
History:
	 Channel(parent = "", name = "fraud", type = ct, vec = s) 

   Min. 1st Qu.  Median    Mean 3rd Qu.    Max. 
    1.0   199.5   594.9   910.9  1279.0  9550.0 
> summary(raw, digits = 2)
fraud, a microarray channel object
Parent object: NA 
Microarray type: user random 
Labeled with: fake 
Design size: 100 by 100 
Design information object:  
History:
	 Channel(parent = "", name = "fraud", type = ct, vec = v) 

   Min. 1st Qu.  Median    Mean 3rd Qu.    Max. 
   0.24  280.00  680.00  990.00 1400.00 9600.00 
> 
> par(mfrow=c(2,1))
> plot(raw)
> hist(raw)
> 
> par(mfrow=c(1,1))
> image(raw)
> 
> # finish the cleanup
> rm(ct, raw, subbed)
> 
> 
> proc.time()
   user  system elapsed 
   0.71    0.06    0.76