The warning I met with is attached here:

Warning message:
In heatmap.2(as.matrix(val.sf.ns[-1:-3]), Rowv = F, Colv = T, dendrogram = "column",  :
  Using scale="row" or scale="column" when breaks arespecified can produce unpredictable results.Please consider using only one or the other.


What does 'unpredictable results' mean? Could anyone explain that? Thanks a lot.

Xin Zheng


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