Problem with merge poly in US counties

[Joshua Smith]

Dear All,

I need to merge US counties in larger units. I manually checked that all the counties I want to merge are adjacent, but, if I try the merge poly command, I get the following error:

failed to connect all line segments in 9 by-group(s)

Could anyone tell me what I'm doing wrong? I'm attaching my code

[Phil Bromiley]

You didn't get a quick answer. You'll increase your chances of a useful answer by following the FAQ on asking questions - provide Stata code in code delimiters, readable Stata output, and sample data using dataex. Many on this list do not open files from strangers due to virus concerns. If you use a user written procedure, please say where it came from.

You appear to be using mergepoly but you wrote merge poly. mergepoly is user-written. Help here often depends on someone active on this forum happening to use the procedure. You may need to contact the program's author.

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