deta<-read.csv("statistic from BaiduBank.csv")head(deta)
##years real.interest.rate nominal.interest.rate CPI Inflation.Rate GDP
##1 1978 2.52 3.24 100.7 0.7 3645.20
##2 1979 1.32 3.78 102.0 2.0 4062.60
##3 1980 -2.16 5.04 106.0 6.0 4545.62
##4 1981 2.98 5.40 102.4 2.4 4891.56
##5 1982 3.75 5.67 101.9 1.9 5323.35
##6 1983 4.23 5.76 101.5 1.5 5962.65
ggplot(data=deta,mapping=aes(x=years,y=GDP))
Error: No layers in plot
这是为什么?


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