How about first transforming the row vectors into variables. Once you have the x
and y row vectors as variables, I believe the following should work:
clear
input y x
2 3
4 4
8 5
12 7
1 0
end
l
gen x_old = x
qui {
local max = .
local min = .
count
local num = r(N)
forv i = 1/`num' {
sum y if y < `max'
local max = r(max)
sum x if x < `max'
local min = r(min)
replace x = `max' if `max' > `min' & x == `min'
}
}
l y x_old x
Scott
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