I have the variable sample.site which has different sites e.g. heart, leg, arm...
Now for some analysis I only want to look at e.g. arm. It works perfectly with
dds0_sub <- dds0[,dds0$Sample.Site == "arm"]
But now I do the same with leg and I
dds0_sub <- dds0[,dds0$Sample.Site == "leg"] but I get this error:
Error in designAndArgChecker(object, betaPrior) : full model matrix is less than full rank
Do you understand what is happening?
Thank you so much, Bine