绘制散点图
You have paired observations: (x1, y1), (x2, y2), ..., (xn, yn). You want to create a scatter plot of the pairs.
公卫百科
If your data is held in two parallel vectors, x and y, use them as arguments of plot:
> plot(x, y)
If your data is held in a (two-column) data frame, plot the data frame:
公卫考场
> plot(dfrm)
See the help page for plot to learn more about adding a title, subtitle, and labels.
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