我想要繪製在R.GGPLOT2 2D密度重量
我得到一個有點奇怪的結果與使用2D GGPLOT2密度輪廓的一些數據。
首先,我建立了我的ggplot對象:
p <- ggplot(data, aes(x=Distance,y=Rate, colour = Company))
然後,我geom_points和geom_density2d繪製此。我希望根據組織的大小(OrgSize變量)對geom_density2d進行加權。然而,當我添加OrgSize作爲加權變量沒有什麼變化中的情節:
此:
p+geom_point()+geom_density2d()
給出了相同的情節是:
p+geom_point()+geom_density2d(aes(weight = OrgSize))
但是,如果我做的一樣一個使用geom_smooth的黃土線,權重確實有明顯的區別。
此:
p+geom_point()+geom_smooth()
給出了不同的情節是:
p+geom_point()+geom_smooth(aes(weight=OrgSize))
如果我使用不當density2d我想知道,我是否應該改爲使用輪廓和供應OrgSize爲「高度'?如果是這樣,爲什麼geom_density2d接受加權因子?下面
代碼:
require(ggplot2)
Company <- c("One","One","One","One","One","Two","Two","Two","Two","Two")
Store <- c(1,2,3,4,5,6,7,8,9,10)
Distance <- c(1.5,1.6,1.8,5.8,4.2,4.3,6.5,4.9,7.4,7.2)
Rate <- c(0.1,0.3,0.2,0.4,0.4,0.5,0.6,0.7,0.8,0.9)
OrgSize <- c(500,1000,200,300,1500,800,50,1000,75,800)
data <- data.frame(Company,Store,Distance,Rate,OrgSize)
p <- ggplot(data, aes(x=Distance,y=Rate))
# Difference is apparent between these two
p+geom_point()+geom_smooth()
p+geom_point()+geom_smooth(aes(weight = OrgSize))
# Difference is not apparent between these two
p+geom_point()+geom_density2d()
p+geom_point()+geom_density2d(aes(weight = OrgSize))
只是讓其他人有鏈接,這個問題已經在ggplot2 Github頁面上提出:https://github.com/hadley/ggplot2/issues/79 – Tumbledown
看起來像是從未在項目清單中獲得過高評價。頁面頂部的鏈接404-ed,但Wayback Machine已經存檔:https://web.archive.org/web/20100731010451/http://web.mit.edu/piantado/www/blog/nonindep -density.R –