最后添加右上角legend后框框怎么这么大？
fit <- lm(Temp~ Wind, airquality)
abline(fit, lwd=2)
legend("topright", pch=1,
col=c("red","blue","black"),
legend=c("sep","May","other"))
输出后右上角的框框为什么和老师讲的不一样，如图，怎么样调大小呢？谢谢！
Dinosaur_ah0
2019-11-01
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