如何获取有关已识别点的信息并将其排除在R中的下一个图中

Question

i've got problem with identify() .

I have something like this

library (UsingR)
df=data.frame(emissions)
plot (df)
getPoint=identify(df)

And I have to exclude the point that is too far away from correct observation group.

How can I take this uncorrect point save it, exclude it, and get the correct frame in next plotting without saved point?

Answer 1

First off I tried using identify on a data frame plot- it doesn't seem to work so instead I did one comparison- GDP vs perCapita:

plot(df$GDP,df$perCapita)
getPoint=identify(df$GDP,df$perCapita)

I then picked a few points on the plot and then pressed 'ESC'

getPoint returns the number of the row of the points that I picked. I can then omit or select these points:

df[getPoint,] #select picked data points
df[-getPoint,] #exclude picked data points