Displaying 3 results from an estimated 3 matches for "savg".
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2006 Apr 19
1
determining optimal # of clusters for a given dataset (e.g. between 2 and K)
...oped decades ago. By the way, I have alot of missing values in my dataset, coded as "NA", so some software packages don't work.
Here is the code I've been using:
library(cluster)
avgsil <- c()
for (k in kseq){
clarares <- clara(data, k, rngR = TRUE)
savg <- clarares$silinfo$avg.width
print(c(k,savg))
avgsil[k] <- savg
}
k<-kseq
plot(k,avgsil[k])
lines(k,avgsil[k])
Sincerely,
Andrew McSweeny
grad student
Medical University of Ohio
[[alternative HTML version deleted]]
2006 Apr 15
0
clustering genes / automatically determining # of clusters
...oped decades ago. By the way, I have alot of missing values in my dataset, coded as "NA", so some software packages don't work.
Here is the code I've been using:
library(cluster)
avgsil <- c()
for (k in kseq){
clarares <- clara(data, k, rngR = TRUE)
savg <- clarares$silinfo$avg.width
print(c(k,savg))
avgsil[k] <- savg
}
k<-kseq
plot(k,avgsil[k])
lines(k,avgsil[k])
Sincerely,
Andrew McSweeny
grad student
Medical University of Ohio
[[alternative HTML version deleted]]
2007 May 07
4
Mardia's multivariate normality test
Dear all,
I got this error message
> library(dprep)
> mardia(Savg)
Error in cov(data) : 'x' is empty
But with the same data, I got
> library(mvnormtest)
> mshapiro.test(Savg)
Shapiro-Wilk normality test
data: Z
W = 0.9411, p-value = 0.6739
What does the error message "Error in cov(data) : 'x' is empty" mean? Thanks...