[R] Error pvclust package: Error in hclust(distance, method = method.hclust)

[Jovani T. de Souza]

This question was also made in
https://stackoverflow.com/questions/65290436/error-pvclust-package-error-in-hclustdistance-method-method-hclust-must

Question:

Could you help me resolve the following error:

    Error in hclust(distance, method = method.hclust) :
      must have n >= 2 objects to cluster

I'm trying to use the `pvclust` package, but I'm not able to generate the
dendogram. If I use all data from the df database, I can generate it, but
as I am restricting only to the coordinates (Latitude and Longitude), it is
not working, it gives the error that I mentioned. Below, I entered an
executable code.

Thank you so much!


    ###USING PVCLUST

    library(rdist)
    library(pvclust)
    library(geosphere)

    df <- structure(
      list(Industries = c(1,2,3,4,5,6,7), Latitude = c(-24.779225,
-24.789635, -24.763461, -24.794394, -24.747102,-24.781307,-24.761081),
           Longitude = c(-49.934816, -49.922324, -49.911616, -49.906262,
-49.890796,-49.8875254,-49.8875254),
           Waste = c(526, 350, 526, 469, 285, 433, 456)),class =
"data.frame", row.names = c(NA, -7L))

    mat <- as.data.frame.matrix(df)
    mat <- t(mat)
    fit <- pvclust(mat, method.hclust="average", method.dist="euclidean")
    fit
    plot(fit)
    pvrect(fit)


# RESTRICTING ONLY TO COORDINATES
    coordinates<-subset(df,select=c("Latitude","Longitude"))
    mat <- as.data.frame.matrix(coordinates)
    mat <- t(mat)
    fit <- pvclust(mat, method.hclust="average", method.dist="euclidean")
    > fit <- pvclust(mat, method.hclust="average", method.dist="euclidean")
    Bootstrap (r = 0.5)... Error in hclust(distance, method =
method.hclust) :
      must have n >= 2 objects to cluster*****




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