tourr (version 0.5.1)

path_dist: Compute distance matrix from bases.

Description

Compute distance matrix from bases.

Usage

path_dist(history)

Arguments

history

history of the plots

Examples

grand <- interpolate(save_history(flea[, 1:6], max = 50), 0.2)
 # The grand tour  -----------------------------
 # Look at the tour path in a tour, how well does it cover a sphere
 # Using MDS
 d <- path_dist(grand)
 ord <- as.data.frame(MASS::isoMDS(d)$points)
 qplot(V1, V2, data = ord, geom="path") +
 coord_equal() + labs(x = NULL, y = NULL)


 library(rggobi)
 # Using a tour in ggobi
 x<-t(rbind(grand[,1,])); colnames(x)<-c("a11","a21","a31","a41","a51","a61")
 y<-t(rbind(grand[,2,])); colnames(x)<-c("a12","a22","a32","a42","a52","a62")
 z<-cbind(x,y)
 ggobi(z)

# 5 guided tours  -----------------------------
holes1d <- guided_tour(holes, 1)
tries <- replicate(5, save_history(flea[, 1:6], holes1d, max = 10),
  simplify = FALSE)
tries2 <- lapply(tries, interpolate, 0.2)

bases <- unlist(lapply(tries2, as.list), recursive = FALSE)
class(bases) <- "history_list"
index_values <- paths_index(tries2, holes)
d <- path_dist(bases)
ord <- as.data.frame(cmdscale(d, 2))

info <- cbind(ord, index_values)
if (require("ggplot2")) {
qplot(step, value, data = info, geom="line", group = try)
qplot(V1, V2, data = info, geom="path", group = try) +
  geom_point(aes(size = value)) +
  coord_equal()
last_plot() + facet_wrap(~ try)
}