clementines {ade4} | R Documentation

## Fruit Production

### Description

The `clementines` is a data set containing the fruit production of 20 clementine trees during 15 years.

### Usage

    data(clementines)

### Format

A data frame with 15 rows and 20 columns

### Source

Tisné-Agostini, D. (1988) Description par analyse en composantes principales de l'évolution de a production du clémentinier en association avec 12 types de porte-greffe. Rapport technique, DEA Analyse et modélisation des systèmes biologiques, Université Lyon 1.

### Examples

    data(clementines)
    op <- par(no.readonly = TRUE)
    par(mfrow = c(5,4)) ; par(mar = c(2,2,1,1))
    for (i in 1:20) {
        w0 <- 1:15 ; plot(w0, clementines[,i], type = "b")
        abline(lm(clementines[,i] ~ w0))
    }
    par(op)

    pca1 <- dudi.pca(clementines, scan = FALSE)
    s.corcircle(pca1$co, clab = 0.75)

    barplot(pca1$li[,1])

    op <- par(no.readonly = TRUE)
    par(mfrow = c(5,4)) ; par(mar = c(2,2,1,1))
    clem0 <- pca1$tab
    croi <- 1:15
    alter <- c(rep(c(1,-1),7),1)
    for (i in 1:20) {
        y <- clem0[,i]
        plot(w0, y, type = "b", ylim = c(-2,2))
        z <- predict(lm(clem0[,i] ~ croi*alter))
        points(w0, z, pch = 20, cex = 2)
        for(j in 1:15) segments (j,y[j],j,z[j])
    }
    par(op)
    par(mfrow = c(1,1))

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