Re: Use several computers to do the calculation?
Reply #3 –
You could process the samples on many different computers and then combine the xcmsSet objects back together on a single computer. However, this single computer will need to have the RAM to hold the final xcmsSet object (shouldn't be much for 70 samples). This will only work for the peak detection side of things. After that i.e. the grouping, retention time alignment you will need to process on the same computer.
To combine the xcmsSets from different computers make sure all the parameters are the same and then use something like the following code:
## computer 1:
xs1<-xcmsSet()
save(xs1, file="xs1.Rda")
## computer 2:
xs2<-xcmsSet()
## transfer xs1 to computer 2
load("xs1.Rda")
xset<-c(xs1,xs2)
xset