This is simply a reformulation of a question I sent out yesterday (and
didn't get any responses to :) I have data sets that, when merged
produce a table with many-to-many relationships. The table below
contains the ID's from each table (Z and E)
+----------+
| Z E |
|----------|
1. | a x |
2. | b x |
3. | b z |
4. | c y |
5. | d z |
|----------|
6. | e q |
7. | e z |
+----------+
In as a base for further calculations I've created variables showing
duplicates and overlap between groups:
+----------------------------------+
| Z E zdup edup overlap |
|----------------------------------|
1. | a x 0 1 0 |
2. | b x 1 1 1 |
3. | b z 1 2 1 |
4. | c y 0 0 0 |
5. | d z 0 2 0 |
|----------------------------------|
6. | e q 1 0 0 |
7. | e z 1 2 1 |
+----------------------------------+
What I need to do is to create a group variable for all records that
are linked to each other through overlapping Z/E. In the example above
I would like to end up with something like:
+------------------+
| zip ex group |
|------------------|
1. | a x 1 |
2. | b x 1 |
3. | b z 1 |
4. | c y 2 |
5. | d z 1 |
|------------------|
6. | e q 1 |
7. | e z 1 |
+------------------+
I've spent several days now trying to figure out how to do that in
Stata/Filemaker/Excel and haven't solved it yet. Any help would be
most welcome!!!!
Fredrik
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