generate four categories from two variables

[Rasmus Tolstrup]

Dear all,

This is a very annoying problem and the solution is most definitely very simple.

I would like to create a variable (category) with four values according to the plot below:

I used the codes below

generate category = 1 if BPS<35.58 | B< 34.77
replace category = 2 if BPS>35.58 | B< 34.77
replace category = 4 if BPS>35.58 | B> 34.77
replace category = 3 if BPS<35.58 | B> 34.77

But I end of with only vales of 3 and 4. I simply cannot get my head around this. Where is the mistake?

Date example below:

* Example generated by -dataex-. To install: ssc install dataex
clear
input float(BPS B category)
35 42 3
30 34 3
38 38 3
38 39 3
30 37 3
34 39 3
36 39 3
25 34 3
37 34 4
37 38 3
34 38 3
40 28 4
36 40 3
34 37 3
35 35 3
44 28 4
38 34 4
40 29 4
44 43 3
41 36 3
37 44 3
33 42 3
39 34 4
41 18 4
39 28 4
40 27 4
36 32 4
37 39 3
37 39 3
42 23 4
41 26 4
36 37 3
39 35 3
38 33 4
31 31 3
35 41 3
32 31 3
35 31 3
32 34 3
34 37 3
32 37 3
35 36 3
34 41 3
34 28 3
34 40 3
31 37 3
36 32 4
35 34 3
32 47 3
37 36 3
32 39 3
32 36 3
35 44 3
37 36 3
34 39 3
41 34 4
37 32 4
39 32 4
39 42 3
38 43 3
32 32 3
36 41 3
36 39 3
34 38 3
30 40 3
34 31 3
31 39 3
32 39 3
31 36 3
33 32 3
36 31 4
37 39 3
38 26 4
36 36 3
37 38 3
35 38 3
33 34 3
36 34 4
34 33 3
33 38 3
32 23 3
40 43 3
38 39 3
38 25 4
29 43 3
35 34 3
46 27 4
32 34 3
35 32 3
43 34 4
35 38 3
38 32 4
43 27 4
35 32 3
41 47 3
32 35 3
37 35 3
37 32 4
37 37 3
28 32 3
end

I thank you for your help

[Rich Goldstein]

you are using "or's" (|) instead of "and's" (&) so your later statements are overwriting the values in your earlier statements

added in edit: note that you may find some equalities esp re: "B" and your code does not allow for this

[Rasmus Tolstrup]

Doh!

Thank you!!