我正在尝试将黄土曲线添加到条形图中。 加载ggplots2包后,我首先创建条形图:
test<-read.csv("tseries.csv", header = TRUE)
barplot(test$tn90p, beside = TRUE,ylim =c(-6,6))
lo<-loess(tn10p~year, test) pred<-predict(lo, se = TRUE)
a<-order(test$year)
到目前为止一直很好,直到我尝试添加平滑曲线:
lines(test$year[a], pred$fit[a], col = "red", lwd = 2)
当我这样做时,没有错误消息,提示返回,但没有添加任何行
我错过了什么?
谢谢你的帮助。
注意:当我输入(测试)时,我有 :
structure(list(year = 1951:1980, tn90p = c(3.126667391, 4.091391006,
3.11420404, 5.117428018, 2.281128013, 2.654342884, 4.189742845,
-0.448909654, 1.634574903, -1.324893538, -0.675205784, -1.876889174,
-2.689793785, 0.364812684, -1.859920287, -1.736813462, -1.527857975,
-3.214404324, -4.189742845, 0.448909654, -1.634574903, 1.324893538,
0.675205784, 1.876889174, -0.436873606, -4.45620369, -1.254283753,
-3.380614556, -0.753270038, 0.560061439)), .Names = c("year",
"tn90p"), class = "data.frame", row.names = c(NA, -30L))
答案 0 :(得分:0)
最后我可以让它发挥作用:
test&lt; -read.csv(“tseries.csv”,header = TRUE)
附(测试)
p = barplot(test $ tn90p,names.arg = test $ year,旁边= TRUE,ylim = c(-6,6))
LO&LT; -loess(tn90p〜年)
线(p,预测(lo),col =“红色”,lwd = 3)
abline(h = 0,lwd = 1)