r - Circlize 迁移图缺少链接

Question

我试图按照 Guy 的 R 代码来创建圆形迁移图。我的文件与他随包“migest”(science/regions_custom)一起提供的文件类似。我的数据文件示例是“regions_oceanos”:

-   -   -   1   2   4   3
-   -   -   Pacífico    Índico  Mediterráneo    Atlántico
1   160,0,125   Pacífico    245.025 1.70210026  0.09857195  1.7337982
2   0,255,233   Índico  0.4165425   242.575 3.9052666   6.9741618
4   125,175,0   Mediterráneo    3.05222742  5.99567776  11.125  5.7953056
3   255,219,0   Atlántico   2.63735109  7.51662301  4.3093533   36.625

R代码是:

library("migest")
m<-read.table("region_reciente.txt", skip=2, stringsAsFactors=FALSE)
df1<-m[,1:3]
names(df1)<-c("order","rgb","region")
df1$region<-gsub("_", " ", df1$region)
m<-m[,-(1:3)]/1e06
m<-as.matrix(m)
dimnames(m)<-list(orig=df1$region,dest=df1$region)
library("plyr")
df1<-arrange(df1, order)
df1$region <- factor(df1$region, levels=df1$region)  
m<-m[levels(df1$region),levels(df1$region)]
df1$xmin <- 0
df1$xmax <- rowSums(m)+colSums(m)
n<-nrow(df1)
df1 <- cbind(df1, matrix(as.numeric(unlist(strsplit(df1$rgb,","))),nrow=n,   byrow=TRUE) )
names(df1)[ncol(df1)-2:0]<-c("r","g","b")
df1$rcol<-rgb(df1$r, df1$g, df1$b, max = 255)
df1$lcol<-rgb(df1$r, df1$g, df1$b, alpha=200, max = 255)
library("circlize")
par(mar=rep(0,4))
circos.clear()
circos.par(cell.padding=c(0,0,0,0), track.margin=c(0,0.1), start.degree = 90, gap.degree =4)
circos.initialize(factors = df1$region, xlim = cbind(df1$xmin, df1$xmax))
circos.trackPlotRegion(ylim = c(0, 1), factors = df1$region,     track.height=0.1, bg.border = NA, bg.col = NA, bg.lty =0, bg.lwd=0.0001,
panel.fun = function(x, y) {
    name = get.cell.meta.data("sector.index")
    i = get.cell.meta.data("sector.numeric.index")
    xlim = get.cell.meta.data("xlim")
    ylim = get.cell.meta.data("ylim")
    circos.text(x=mean(xlim), y=2.2, labels=name, facing = "bending", cex=0.8)
    circos.rect(xleft=xlim[1], ybottom=ylim[1], xright=xlim[2], ytop=ylim[2], 
             col = df1$rcol[i], border=df1$rcol[i])
    circos.rect(xleft=xlim[1], ybottom=ylim[1], xright=xlim[2]-rowSums(m)[i], ytop=ylim[1]+0.3, 
             col = "white", border = "white")
    circos.rect(xleft=xlim[1], ybottom=0.3, xright=xlim[2], ytop=0.32, col = "white", border = "white")
    circos.axis(labels.cex=0.8, direction = "outside", major.at=seq(0,floor(df1$xmax)[i]), minor.ticks=1,
             labels.away.percentage = 0.15)
})
df1$sum1 <- colSums(m)
df1$sum2 <- numeric(n)
df2<-cbind(as.data.frame(m),orig=rownames(m),  stringsAsFactors=FALSE)
df2<-reshape(df2, idvar="orig", varying=list(1:n), direction="long",      timevar="dest", time=rownames(m),  v.names = "m")
df2<-arrange(df2,desc(m))
df2<-subset(df2, m>quantile(m,0.65))
for(k in 1:nrow(df2)){
    i<-match(df2$orig[k],df1$region)
    j<-match(df2$dest[k],df1$region)
    circos.link(sector.index1=df1$region[i], point1=c(df1$sum1[i], df1$sum1[i] + abs(m[i, j])),
          sector.index2=df1$region[j], point2=c(df1$sum2[j], df1$sum2[j] + abs(m[i, j])),
          col = df1$lcol[i])
    df1$sum1[i] = df1$sum1[i] + abs(m[i, j])
    df1$sum2[j] = df1$sum2[j] + abs(m[i, j])
}

而且，正如你所看到的，我得到了这个 very cool graph ，但其中的链接不一定代表我的矩阵。例如，您可以看到没有从 Pacifico 和 Mediterraneo 或从 Atlantico 到 Mediterraneo 的流量，但在矩阵中，我为那些与实际绘制的部分相似的部分提供了一些值。这可能与创建绘图区域后代码显示的注意事项有关:(注意:1 点超出了扇区“Pacífico”的绘图区域，轨道“1”)。但我不知道如何处理它。我将非常感谢任何反馈和评论

Answer 1

线

df2 <- subset(df2, m>quantile(m,0.65))

确保只绘制最大的流量。您可能不需要这个，因为您只有四个区域，而且听起来您想要查看所有流程。

另外，我还没有更新 migest 包中演示脚本的 CRAN 版本。您最好使用 github 上的版本，
https://github.com/gjabel/migest/tree/master/demo ，或者...现在使用 chordDiagram 更容易绘制这些图。功能:

library("circlize")
m <- read.table("region_reciente.txt", skip=2, stringsAsFactors=FALSE)
#data.frame for details on each region
df1 <- m[,1:3]
names(df1) <- c("order","rgb","region")
n <- nrow(df1)
df1 <- cbind(df1, matrix(as.numeric(unlist(strsplit(df1$rgb,","))),nrow=n, byrow=TRUE) )
names(df1)[ncol(df1)-2:0] <- c("r","g","b")
df1$rcol <- rgb(df1$r, df1$g, df1$b, max = 255)

#flow matrix
m <- m[,-(1:3)]
m <- as.matrix(m)
dimnames(m) <- list(orig=df1$region, dest=df1$region)
chordDiagram(m, directional = TRUE, grid.col=df1$rcol)