Hello,

I encountered a problem when I run fastMNN integration function.

My code:

scRNAlist <- list(x1, x2, x3, x4, x5, y1, z3, a1)
scRNAlist <- lapply(scRNAlist, FUN = function(x) NormalizeData(x))
scRNAlist <- lapply(scRNAlist, FUN = function(x) FindVariableFeatures(x))
seu_mnn <- RunFastMNN(object.list = scRNAlist)

Then the error occurs, and the message is:

Error in sort.int(x, na.last = na.last, decreasing = decreasing, ...) : 
  'x' must be atomic

I suppose I do not need to sort my scRNAlist, and I sort(scRNAlist) command, same error appeared.

I hope you could offer me some suggestions.

Thanks Andy