Displaying 6 results from an estimated 6 matches for "kbrownk".
2011 Dec 12
1
Is there a way to print branch distances for hclust function?
...differences from
the mean fusion distance (i.e. The Best Cut Test).
To perform a cluster analysis I'm using:
x <- dist(mydata, method = "euclidean") # distance matrix
y <- hclust(x, method="ward") #clustering (i.e. fusion) method
plot(y) # display dendogram
Thanks,
kbrownk
2011 Dec 20
1
Help Transforming sums into observations
...at I will
measure separately, so my csv file actually looks like this:
Bin: 1,2,3, ... ,10 #Observations: 23,42,1,... 56
Bin: 1,2,3, ... ,10 #Observations: 13,33,32,...98
.
.
.
Bin: 1,2,3, ... ,10 #Observations: 11,76,55,...46
I want to automate the process.
Thanks for any advice,
kbrownk
2011 Dec 09
1
Help understanding cutree used for Dunn Index
...efine 3 clusters. Will cutree look
back at the cluster tree created by the Ward's method and then take
the 3 largest distance values from among these 62 potential groups so
that when I use Dunn index, those will be the only distances
considered?
I can post code and/or data if helpful.
Thanks,
kbrownk
2011 Dec 21
1
Diptest- I'm getting significant values when I shouldn't?
...nificant for
Hartigan's dip test?
dip(x = rnorm(1000))
I get dip scores of around 0.0008 which based on p values taken from
the table (at N=1000), using the command: qDiptab, are 0.02 < p <
0.05.
Anyone familiar with Hartigan's dip test and what I may not be
understanding?
Thanks,
kbrownk
2010 Nov 11
2
Kolmogorov Smirnov Test
...n use ks.test first.
I used to use SPSS but am really trying to jump into R instead, but I
find the help to assume too heavy of statistical knowledge.
I'm guessing I have a long road before I get this, so any bits of
information that may help me get a bit further will be appreciated!
Thanks,
kbrownk
2011 Oct 02
2
Scatterplot with the 3rd dimension = color?
I have 3 columns of data and want to plot each row as a point in a
scatter plot and want one column to be represented as a color gradient
(e.g. larger values being more red). Anyone know the command or
package for this?
Thanks,
KB