您好,我想知道为什么我下面的代码使图例着色,但点本身不是:
# dataset <- data.frame(IDName, Value, Setpoints)
# dataset <- unique(dataset)
# Paste or type your script code here:
dat <- aggregate(Value ~ Setpoints + IDName, dataset, mean)
x <- dat$Value
y <- dat$Setpoints
z <- dataset$IDName
plot(x,y, main ="Turbidity Frequency Distribution",xlab="% Time < Turbidity level", ylab="Turbidity (NTU)")
lines(spline(x,y))
palette()
legend('topleft', legend = unique(z), col = 1:3, cex = 0.8, pch = 1)
#constant lines
abline(h=c(0.1,0.15,0.3), col=c("red","pink","purple"), lty=2, lwd=3)
答案 0 :(得分:0)
确保 z
是 factor
。然后,在创建绘图时使用 col = z
。你会得到彩色点。
在您的 legend
(出现在图例中的字符值)到您的 levels
factor
的 z
中。此外,根据 unique(z)
设置颜色 - 它们应该与您的点相匹配。
这是完整的示例。将来,不要将数据放在评论中,请使用数据编辑您的问题。此外,您可能需要考虑 ggplot2
以供将来绘图。
dat <- aggregate(Value ~ Setpoints + IDName, dataset, mean)
x <- dat$Value
y <- dat$Setpoints
z <- dataset$IDName
z <- factor(z)
plot(x, y,
main ="Turbidity Frequency Distribution",
xlab="% Time < Turbidity level",
ylab="Turbidity (NTU)",
col = z)
lines(spline(x,y))
palette()
legend('topleft',
legend = levels(z),
col = unique(z),
cex = 0.8,
pch = 1)
#constant lines
abline(h=c(0.1,0.15,0.3), col=c("red","pink","purple"), lty=2, lwd=3)
情节
数据
dataset <- structure(list(IDName = c("Filter01", "Filter01", "Filter01",
"Filter01", "Filter01", "Filter02", "Filter02", "Filter02", "Filter02",
"Filter02"), Setpoints = c(0.16, 0.2, 0.3, 2, 2.2, 0.16, 0.2,
0.3, 2, 2.2), Value = c(96.1, 96.2, 96.428, 99.603, 99.6, 98.8,
98.9, 99.049, 99.194, 99.2)), class = "data.frame", row.names = c(NA,
-10L))