Displaying 20 results from an estimated 5000 matches similar to: "plot.dendrogram"
2011 Dec 12
1
how to colour labels (each label with a colour) in a dendrogram?
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
2016 Apr 21
2
"cophenetic" function for objects of class "dendrogram"
Hello,
I have been using the "cophenetic" function for objects of class "dendrogram" and I have realised that it gives different results when it is used with objects of class "hclust". For instance, running the first example in the help file of the "cophenetic" function,
d1 <- dist(USArrests)
hc <- hclust(d1, "ave")
d2 <-
2012 May 24
4
Manually modifying an hclust dendrogram to remove singletons
Dear R-Help,
I have a clustering problem with hclust that I hope someone can help
me with. Consider the classic hclust example:
hc <- hclust(dist(USArrests), "ave")
plot(hc)
I would like to cut the tree up in such a way so as to avoid small
clusters, so that we get a minimum number of items in each cluster,
and therefore avoid singletons. e.g. in this example, you can see
2005 Dec 16
2
dendrogram branches with different lty
Dear r-list,
I am trying to visually seperate the two main clusters of a dendrogram.
The idea is to use:
'edgePar=list(lty=3)' for 'dend1[[1]]' and
'edgePar=list(lty=1)' for 'dend1[[2]]'
I have not found a way to solve this. Any suggestions?
Patrick
hc <- hclust(dist(USArrests), "ave")
(dend1 <- as.dendrogram(hc))
par(mfrow=c(2,2))
plot(dend1)
2011 Jan 25
1
dendrogram plot does not draw long labels ?
Hello,
It seems that the plot function for dendrograms does not draw labels when
they are too long.
> hc <- hclust(dist(USArrests), "ave")
> dend1 <- as.dendrogram(hc)
> dend2 <- cut(dend1, h=70)
> dd <- dend2$lower[[1]]
> plot(dd) # first label is drawn
> attr(dd[[1]], "label") <- "aaaaaaaaaaaaaaaaaa"
> plot(dd) # first label is
2011 Dec 09
1
how to add an edgetext to a dendrogram?
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
2016 Apr 21
1
"cophenetic" function for objects of class "dendrogram"
Note that cophenetic.default (which works on the output of hclust(dist(X)))
uses the
row names of X as labels. as.dendrogram.hclust does not retain those row
names
so cophenetic.dendrogram cannot use them (so it orders them based on the
topology of the dendrogram).
Bill Dunlap
TIBCO Software
wdunlap tibco.com
On Thu, Apr 21, 2016 at 7:59 AM, William Dunlap <wdunlap at tibco.com> wrote:
2004 May 19
7
Help with hclust() and plot()
Hi
When I use plot(hclust(dist..)...)...) etc to create a dendrogram of a
hierarchial cluster analysis, I end up with a vertical tree. What do I
need to do to get a horizontal tree?
Also, my users are used to seeing trees who's leaves all "end" at the
same place (eg. Like in minitab). Is this possible in R?
Thanks
Mick
Michael Watson
Head of Informatics
Institute for Animal
2005 Dec 12
1
dendrogram: how to obtain leaf height
Dear All,
How can the height of a leaf be extracted from a dendrogram?
Sure, I can print it, but I am not able to, say, store it in an object. I think I understand that the height is a property of the split, not the leaf itself, but the printing functions display a "height" or "h" (which changes with "hang") and that is what I want. Obviously, the info is there
2007 Oct 26
2
cut.dendrogram and cutree
Hi!
In the example:
hc <- hclust(dist(USArrests), "ave")
dend1 <- as.dendrogram(hc)
dend2 <- cut(dend1, h=70)
Do the branches "Branch 1", "Branch 2", "Branch 2"...in dend2$upper
str(dend2$upper)
--[dendrogram w/ 2 branches and 4 members at h = 152]
|--[dendrogram w/ 2 branches and 2 members at h = 77.6]
| |--leaf "Branch 1" (h=
2002 Mar 05
1
no labels when plotting dendrograms
I'd like to be able to cut dendrograms at a height I specify
and then plot the resulting subtrees. I wanted to use the
dendrogram object for this purpose because there doesn't seem
to be a canned way to cut a hclust object and get a list of
hclust objects, but there is a function (cut) that does that
for dendrograms. The problem I'm having is that when I plot
a dendrogram, I
2003 Sep 30
2
dump/source problem with hclust object (PR#4361)
library(mva)
data(USArrests)
hc <- hclust(dist(USArrests), "ave")
plot(hc) # OK
dump(c("hc"), "tst")
rm(hc)
source("tst")
plot(hc) # Error in plot.hclust(hc) : invalid dendrogram input
The same problem occurs with dput/dget
--please do not edit the information below--
Version:
platform =
2008 Jun 02
1
Plotting horizontal dendrograms
I am using hclust and plot to produce dendrograms. Using my input data I am
able to complete an analysis and obtain a vertical plot.
I want to be able to plot the dendrogram horizontally.I am using version 2.6
of R and have updated my packages recently.
Using the sample script for dendrograms I can produce a horizontal plot
using the instruction horiz = TRUE in plot().
When I use the same
2011 Mar 02
2
clustering problem
Hi,
I have a gene expression experiment with 20 samples and 25000 genes each.
I'd like to perform clustering on these. It turned out to become much faster
when I transform the underlying matrix with t(matrix). Unfortunately then
I'm not anymore able to use cutree to access individual clusters. In general
I do something like this:
hc <- hclust(dist(USArrests), "ave")
2012 Sep 26
3
Simple Question About Exporting Back to Excel
All,
Relatively new R user so this is probably an easy question to answer.
I am able to generate a cluster for my dataset using hclust() then ploting
the data with plot().
This results in an image with a dendrogram with my sample names along the
bottom. Great!
However, I now need a way to get that sample order from the image into
excel.
i.e. sample 7 was on the far left, sample 19 was in
2010 Jun 15
1
dendrogram
Hello.
I have a small problem when I want to display a dendrogram for about 450 varieties.
The label of theses varieties is too big and we can not see thems well.
How can I do to resize the label smaller?
Can you help me please?
Thanks.
[[alternative HTML version deleted]]
2013 May 21
2
Cambiando limites en hclust()
Buenas tardes a todos,
Estoy interesado en cambiar los límites del eje y en un dendograma
construído utilizando la función hclust(). A continuación un ejemplo:
hc <- hclust(dist(USArrests), "ave")
plot(hc)
Hasta aquí todo bien. Si quisiera cambiar los límites del eje "y" de c(0,
200)? Al usar
plot(hc, ylim = c(0, 200))
no observo efecto alguno.
Qué puedo hacer?
2012 Apr 30
2
Generate Dendrogram
Hi
I have a distance matrix which is computed by user defined method. I
would like to plot the dendrogram. I would like to use different color
and want the leaves laying down bottom.
The script like this. I am not familiar with R. I followed the example
shown in
http://stat.ethz.ch/R-manual/R-devel/library/stats/html/dendrogram.html
dist.obj <- as.dist(matrix.distance)
hc.obj <-
2002 Oct 25
2
functions
Hello,
I am a newbie in R,
I just did my first function, which works!!! And I would like to know, if I
can create a directory in the library with my functions, in a way, which I
could call that like we call the packages ?
Can anyone help me?
Thanks in advance
Marta
><((((?>`?.??.???`?.?.???`?...?><((((?>`?.??.???`?.?.???`?...?><((((?>
2011 Jan 12
3
Problems creating a PNG file for a dendrogram: "Error in plot.window(...) : need finite 'xlim' values"
Has anyone successfully created a PNG file for a dendrogram?
I am able to successfully launch and view a dendrogram in Quartz. However, the dendrogram is quite large (too large to read on a computer screen), so I am trying to save it to a file (1000x4000 pixels) for viewing in other apps. However, whenever I try to initiate a PNG device, I get a "need finitite 'xlim' values"