Hello guys,
I have this data set that I imported into R using a line: This data set
consists of 7 columns. The two important columns are the first one called
'thrust' and the last one called 'amtemp'.
jet<-read.table("jetthrust.txt", fill=T, head=T)
I am making a scatterplot matrix simply using the line "pairs(jet)"
The problem is that in the last column of this file which has a header name
'amtemp' I want to sort out
the values. I want values:
Under 90: To be called low values
In between 90 and 100: To be called medium values
Larger than 100: To be called high values
Then I want those groups of values to be in different colors and different
characters on the scatterplot!
I tried many ways, And I think I am stuck. I first tried it on a normal plot
using the line.
plot(thrust~amtemp,jet, subset=(jet$amtemp<90), col=1, pch=11)
plot(thrust~amtemp,jet, subset=(jet$amtemp<100), col=2, pch=12)
plot(thrust~amtemp,jet, subset=(jet$amtemp>100), col=3, pch=13)
It didnt work because it just took the last plot and overwrite it over the
last one :(
Someone help please.
Thanks in advance.
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