如何根據數據框列設置 R plotrix::polar.plot 中符號的大小和/或顏色？

Question

我有一個包含三列的數據框“df”：距離、方位角、強度。 通過plotrix:polar.plot我使用以下代碼得到了 plot

polar.plot(df$distance, df$azimuth, radial.lim=c(0,450),start=90,rp.type = "s", clockwise=TRUE, point.col=4, cex = 1.2)

有沒有辦法讓符號的大小（或顏色）隨着“強度”列值的變化而變化？

Answer 1

因為我沒有找到任何“直接”解決方案，所以我使用子集（）將 dataframe 划分為幾個數據幀，並且在我用不同的“cex”/“point.col”設置為“TRUE”繪制每個 dataframe 之后，將“add”參數.

df3 <- subset(outPutDeg, intensity <= 3)
df5 <- subset(outPutDeg, intensity > 3 & intensity <= 5)
df7 <- subset(outPutDeg, intensity > 5 & intensity <= 7)
df9 <- subset(outPutDeg, intensity > 7 & intensity <= 9)
df11 <- subset(outPutDeg, intensity > 9)

polar.plot(df3$distance, df3$azimuth, radial.lim=c(0,450),start=90,rp.type = "s", clockwise=TRUE, point.col=5, cex = 0.6)
polar.plot(df5$distance, df5$azimuth, radial.lim=c(0,450),start=90,rp.type = "s", clockwise=TRUE, point.col=4, cex = 0.6, add = T)
polar.plot(df7$distance, df7$azimuth, radial.lim=c(0,450),start=90,rp.type = "s", clockwise=TRUE, point.col=3, cex = 0.6, add = T)
polar.plot(df9$distance, df9$azimuth, radial.lim=c(0,450),start=90,rp.type = "s", clockwise=TRUE, point.col=2, cex = 0.6, add = T)
polar.plot(df11$distance, df11$azimuth, radial.lim=c(0,450),start=90,rp.type = "s", clockwise=TRUE, point.col=1, cex = 0.6, add = T)

粗略而有效