我已經設法使用灰度級命令來製作三維散點圖,第三個維度表示顏色漸變。試圖製作與之相符的傳奇時,我已經碰壁了。我已經有了我想要的顏色範圍,我只是不知道如何告訴R讓它們成爲傳奇。這是我的代碼。如何製作代表我z值的色譜圖例?
conocarp.stands<-c(264,330,400,594,600,700,726,730,800,825,825,826,1914,2145,2200,2310,2475,2640,3630,3960,3960,4124,4554,5082,8250,8475,9200,1000)
fimb.size<-c(540,2160,1100,1170,350,850,2340,600,200,738,1080,1300,2416,540,3565,810,648,0,900,0,635,1210,0,900,2340,1152,0,0)
sugar.visits.cono<-c(0.005682,0,0.065,0,0,0.010714,0,0.010274,0.011875,0,0,0,0,0,0.007045,0,0.001414,0.002273,0,0.014141,0.001263,0.006426,0.000769,0.000295,0.005515,0.000186,0.00359,0.004939)
colors <- rev(grey(1:101/101))
zcolor <- colors[round((sugar.visits.cono -min(sugar.visits.cono))/diff(range(sugar.visits.cono))*100 + 1)]
plot(conocarp.stands,fimb.size, pch=1, cex=1.8,ann=FALSE)
points(conocarp.stands,fimb.size,col=zcolor, pch=16, cex=1.5)
zcolor是我的z軸值,應該可以用來產生我的圖例。我嘗試過使用各種軟件包,即SDMTools和字段,但我不應該走這個路線。
也許一個使用hcl的順序調色板也可以嗎? –