[R] how to colour labels (each label with a colour) in a dendrogram?

[Sarah Goslee]

Did you try this:
http://r.789695.n4.nabble.com/coloring-leaves-in-a-hclust-or-dendrogram-plot-td795496.html

or this:

http://bioinformatics.mdanderson.org/Software/OOMPA/ClassDiscovery/html/plotColoredClusters.html

edgetext labels the segments, I think, and is not what I understand
you to want, which is colors for the labels themselves. Thus, the
above suggestions, which I found with about 30 seconds of Googling.

Sarah

On Mon, Dec 12, 2011 at 5:10 AM, barbara costa <rbarbarahc at gmail.com> wrote:
> Hello to all,
> I still have this doubt.
> I'd like to colour the different labels of my dendrogram each one with a
> different colour. How can I do? I guess I could do using edgetext and then
> t.col or lab.col but I don't know how to add edgetext to my dendrogram. Can
> you help me please?
>
> Example:
>
> require(graphics); require(utils)
> hc <- hclust(dist(USArrests), "ave")
>  (dend1 <- as.dendrogram(hc))
> plot(dend1)
> labels (USArrests) [[1]] # to know how many cities (labels) = 50
>
> nP <- list(col=3:2, cex=c(2.0, 0.75), pch= 21:22,
>            bg= c("light blue", "pink"),
>            lab.cex = 0.75, lab.col = 1:50) # or use a palette:
> palette(rainbow(50))
>
> plot(dend1, edgePar=nP, dLeaf=1, edge.root = TRUE)
>
> # this option is not correct. I want each of my labels (text) have a
> different colour but that is not what is happening. How can I do that?
>
> I'd appreciate your help.
> thanks a lot again.
> Barbara
>
> On 9 December 2011 13:44, barbara costa <rbarbarahc at gmail.com> wrote:
>>
>> I'm sorry.
>>
>>  (dend1 <- as.dendrogram(hc))
>>
>> On 9 December 2011 12:10, Sarah Goslee <sarah.goslee at gmail.com> wrote:
>>>
>>> Hi,
>>>
>>> On Fri, Dec 9, 2011 at 6:57 AM, barbara costa <rbarbarahc at gmail.com>
>>> wrote:
>>> > Hello to all,
>>> > I'd like to colour the different labels of my dendrogram. How can I do?
>>> > I
>>> > guess I could to using *edgetext* and then* t.col* or *lab.col* but I
>>> > don't
>>> > know how to add edgetext to my dendrogram. Can you help me please?
>>> >
>>> > Example:
>>> >
>>> > require(graphics); require(utils)
>>> >
>>> > hc <- hclust(dist(USArrests), "ave")
>>> > plot(dend1)
>>> > labels (USArrests) [[1]] # to know how many cities (labels) = 50
>>>
>>>
>>> > require(graphics); require(utils)
>>> >
>>> > hc <- hclust(dist(USArrests), "ave")
>>> > plot(dend1)
>>> Error in plot(dend1) : object 'dend1' not found
>>>
>>> What's dend1?
>>>
>>> > nP <- list(col=3:2, cex=c(2.0, 0.75), pch= 21:22,
>>> >           bg= c("light blue", "pink"),
>>> >           lab.cex = 0.75, lab.col = 1:50) # or use a palette:
>>> > palette(rainbow(50))
>>> >
>>> > plot(dend1, edgePar=nP, dLeaf=1, edge.root = TRUE)
>>> >
>>> > # this option is not correct. I want each of my labels (text) have a
>>> > different colour but that is not what is happening. How can I do that?
>>> >
>>> > I'd appreciate your help.
>>> > thanks a lot
>>> > Barbara
>>> >
>>>
>>>
>>> --
>>> Sarah Goslee
>>> http://www.functionaldiversity.org
>>
>>
>