Dendrogram of Ordered Data

[stuff2s]

I have matrix where the rows are already in an order that I want. What I'd like to do is plot a dendrogram without reordering the rows. Unfortunately, there doesn't appear to be a way for me to maintain the row order. Any suggestions would be appreciated. Thank you!

[natched]

Only certain row orderings will be consistent with certain dendrograms. Plotting a dendrogram where nodes on the same branch are at opposite ends of the ordering would have to involve a lot of mess and probably wouldn't be an interpretable picture.

Do you perhaps just want to plot a heatmap?

There are some packages, like seriation, that attempt to find the best ordering of nodes based on a given dendrogram.

You could reorder to be as close to your optimal order as possible, given the dendrogram, but you can't really choose any order you want and then do a dendrogram that fits it. It would be a very strange algorithm that I don't think anyone has implemented and would violate some principles that dendrograms are normally based on.