R help - May 2012 - How to re-order clusters of hclust output?

Hello,

The heatmap function conveniently has a "reorder.dendrogram" function
so that clusters follow a certain logic.

It seems that the hclust function doesn't have such feature. I can use
the "reorder" function on the dendrogram obtained from hclust, but
this does not modify the hclust object itself.

I understand that the answer should be within the "heatmap" function
given that it uses hclust to work, but I find it very hard to follow
actually. For example I just don;t get what is 1L and 2L.

Any help would be appreciated!

Thanks,

Emmanuel

I don't have a general answer to your question, but 1L and 2L are just the
integers 1 and 2 (the L makes them integers instead of doubles which is useful
for some things)

Michael

On May 11, 2012, at 2:15 PM, Emmanuel Levy <emmanuel.levy at gmail.com>
wrote:
> Hello,
> 
> The heatmap function conveniently has a "reorder.dendrogram"
function
> so that clusters follow a certain logic.
> 
> It seems that the hclust function doesn't have such feature. I can use
> the "reorder" function on the dendrogram obtained from hclust,
but
> this does not modify the hclust object itself.
> 
> I understand that the answer should be within the "heatmap"
function
> given that it uses hclust to work, but I find it very hard to follow
> actually. For example I just don;t get what is 1L and 2L.
> 
> Any help would be appreciated!
> 
> Thanks,
> 
> Emmanuel
> 
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