[R] Question:shardsplot (package:klaR)

From: ebi <keisyu_at_gmail.com>
Date: Sun 22 Oct 2006 - 03:27:16 GMT


Dear all,

 I have a question on the shardsplot package:klaR(see the below Example).

Plese tell me the meanings of " logstand <- t((t(logcount) / sdlogcount) * c(1,2,6,5,5,3))", much more.

Why does this example use "c(1,2,6,5,5,3)" ?

 Examples:

# Compute clusters and an Eight Directions Arranged Map for the

# country data. Plotting the result.

     data(countries)

     logcount <- log(countries[,2:7])

     sdlogcount <- apply(logcount, 2, sd)

     logstand <- t((t(logcount) / sdlogcount) * c(1,2,6,5,5,3))

     cclasses <- cutree(hclust(dist(logstand)), k = 6)

     countryEDAM <- EDAM(logstand, classes = cclasses, sa = FALSE,

         iter.max = 10, random = FALSE)

     plot(countryEDAM, vertices = FALSE, label = TRUE, stck = FALSE)

Sincerely yours,
Mikio

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