Dear all:
I have some data that I want to cluster and display as groups surrounded
by convex hulls. Here, i use the iris data as an example:
library(ggfortify)
autoplot(fanny(iris[-5], 3), frame = TRUE)
I used this code before, about a year ago, and then it resulted in data
surrounded by convex hulls., just as may be seen in the description of
ggfortify here:
http://rstudio-pubs-static.s3.amazonaws.com/53162_cd16ee63c24747459ccd180f69f07810.html
Presently, no hulls are drawn; instead some line is projected on each
cluster.
I found out that there is an addition to autoplot command, "frame.type =
c("convex", "norm", "t"). Whereas ""norm" and "t" give confidence
ellipses as expected, "convex" results in a straight line as mentioned
above.
Any help would be appreciated.
Best
--
Karl Schilling
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