====== European Airports Core / How to ======

===== European Airports Cores =====

[[aircore|European Airports Core]]

<code>
> setwd("C:/test/cores")
> library(jsonlite)
> library(Polychrome)
> source("https://raw.githubusercontent.com/bavla/ibm3m/master/multiway/MWnets.R")
> MN <- fromJSON("https://raw.githubusercontent.com/bavla/ibm3m/master/data/AirEu2013Ext.json")
> str(MN)
> MN$nodes$line$short <- substr(MN$nodes$line$ID,1,4)
> core <- relCore(MN,"airA","airB","line")
> w1 <- (1:450)[core==13]; w2 <- (1:450)[core==13]
> Score <- extract(MN,c("airA","airB"),c("w1","w2"))
> act <- as.integer(names(table(Score$links$line)))
> Rcore <- extract(Score,"line","act")
> c27 <- glasbey.colors(27); CC <- col2rgb(c27)/255
> Col <- cbind(CC[1,Rcore$links$line],CC[2,Rcore$links$line],CC[3,Rcore$links$line])
> s <- rep(0,27)
> for(i in 1:27) s[i] <- sum(Rcore$links$line==i)
> q <- inv(order(s))
> mwnX3D(Rcore,"airA","airB","line","w",pz=q,lu="long",lv="long",maxsize=0.85,col=Col,file="AirCore13.x3d")
> ts <- c(1,20,10,26,27,19,24,9,7,8,21,13,18,4,2,15,11,23,6,22,5,16,3,12,14,17,25,28)
> t <- inv(ts)
> mwnX3D(Rcore,"airA","airB","line","w",pu=t,pv=t,pz=q,lu="long",lv="long",maxsize=0.85,col=Col,file="AirCore13s.x3d")
> qs <- c(1,5,10,19,3,7,12,4,16,13,21,8,20,6,11,18,17,2,23,9,15,24,25,14,22,27,26)
> qq <- inv(qs)
> mwnX3D(Rcore,"airA","airB","line","w",pu=t,pv=t,pz=qq,lu="long",lv="long",maxsize=0.85,col=Col,file="AirCore13f.x3d")
> (Na <- Rcore$nodes$airA$long[ts])
> (Nc <- Rcore$nodes$line$ID[qs])
</code>

===== Clustering all airports =====

[[airports|All airports / clustered, 3D layout]]
<code>
> Cou <- projection(MN,"airA","w")
> Sau <- salton(Cou); Du <- as.dist(1-Sau); Du[is.na(Du)] <- 1
> tu <- hclust(Du,method="ward")
> plot(tu,hang=-1,cex=0.2,main="EU airports - airports / Ward")
> Coz <- projection(MN,"line","w")
> Saz <- salton(Coz); Dz <- as.dist(1-Saz); Dz[is.na(Dz)] <- 1
> tz <- hclust(Dz,method="ward")
> plot(tz,hang=-1,cex=0.8,main="EU airports - companies / Ward")
> I <- inv(tu$order); K <- inv(tz$order) 
> CC <- col2rgb(createPalette(37,c("#ff0000","#00ff00","#0000ff")))/255
> Col <- cbind(CC[1,MN$links$line],CC[2,MN$links$line],CC[3,MN$links$line])
> mwnX3D(MN,"airA","airB","line","w",maxsize=0.85,pu=I,pv=I,pz=K,lu="long",lv="long",col=Col,file="EUair.x3d")
</code>
{{https://github.com/bavla/ibm3m/blob/master/multiway/X3D/EUairdendAP.pdf|Airports dendrogram}}; {{https://github.com/bavla/ibm3m/blob/master/multiway/X3D/EUairdendCO.pdf|Companies dendrogram}};

===== Export dendrogram to SVG =====

<code>
> row.names(Cou) <- MN$nodes$airA$long
> Saul <- salton(Cou); Dul <- as.dist(1-Saul); Dul[is.na(Dul)] <- 1
> tul <- hclust(Dul,method="ward")
> svg("airports.svg",width=18,height=8)
> plot(tul,hang=-1,cex=0.2,main="EU airports - airports / Ward")
> dev.off()
</code>

[[http://vladowiki.fmf.uni-lj.si/doku.php?id=vlado:work:svg:ex2|Airports dendrogram]]

[[vlado:work:r:color|colors in R]]