我想獲得一條線,該線通過給定點併爲指定的時間間隔內的值指定顏色。但我只能得到指定顏色的多行,而不是單行,這會改變其子區間的顏色。geom_line的條件顏色
的可重複的例子如下:
require(ggplot2)
require(plotly)
vectX <- c(-5,-4.5,-3.2,-2.1,-0.8,0.1,1.3,2.7,3.6,4.4,5)
vectY <- c(-2.3,1.4,2.7,0.3,-0.4,1.5,3.9,2.4,0.5,-1.2,1.4)
requestedQuantilesZscores <- c(0.0,0.25,0.5,0.75,1.0)
zScores <- base::scale(vectY, center = TRUE, scale = TRUE)
quantilesZscore <- stats::quantile(zScores, requestedQuantilesZscores, na.rm = TRUE)
theDataFrame <- base::data.frame(theX = vectX, theY = vectY, theZ = zScores)
valuesColor <- c('green','red','blue','yellow','orange')
theDataFrame$conditionalColor <- ifelse(theDataFrame$theZ > quantilesZscore[[4]], valuesColor[[1]] ,
ifelse(theDataFrame$theZ > quantilesZscore[[3]] & theDataFrame$theZ <= quantilesZscore[[4]], valuesColor[[2]],
ifelse(theDataFrame$theZ > quantilesZscore[[2]] & theDataFrame$theZ <= quantilesZscore[[3]], valuesColor[[3]],
ifelse(theDataFrame$theZ <= quantilesZscore[[2]], valuesColor[[4]], valuesColor[[5]]))))
theGGplotLine <- ggplot(theDataFrame) +
geom_line(aes(x = theX, y = theY, color = conditionalColor)) +
xlab('X') + ylab('Y') +
scale_colour_manual(values = valuesColor) +
theme(legend.position='none')
theGGplotLine
(plotly::ggplotly(theGGplotLine))
如果我理解你的問題(我不能肯定我做的),那麼你正在尋找的是細分一行成各種顏色。根據我所知,使用'geom_line'無法達到這個目的,您需要恢復到像geom_abline這樣的圖形原語和朋友分別繪製每條線。 –