I'm trying to figure out how to locate a canonical answer which I know does or should exist in order to flag a duplicate when the question isn't canonical.
Example: Problem with projection in meters with ArcGIS 10.1 was asked and it was the third question in the last week or so that appeared to be related to misuse of Define vs Project. It immediately came to mind that there ought to be a canonical question and answer for this issue (or FAQ really), so I started looking into how to create one - beginning with Community Wiki research.
In the meantime someone else flagged it as a duplicate of Layers with same coordinate system should align/overlap but do not? which just so happens to have a great canonical answer for the issue already. But there is no way I would have found it if I hadn't already known of it, because the question is one of half a dozen possible ways to get at the same root issue.
I saw Is it appropriate to change the title of a question to reflect the definitive answer? and more particularly blah238's answer which is the opposite of my issue. Yes, (some of) the dupe questions should remain because there are so many ways to ask a question that the root of the problem is one issue - but how do you find that answer amongst all those questions? Age, quality, and votes are all discussed below as far as which should be canonical, but nothing about how to find it.
My first thought was you create a Community Wiki question that is based on the answer - ie "Incorrect use of Define vs Project" - and the canonical answer could be copied to this question. This is based on what I had read at:
- Should old questions be updated to reflect details of later questions that were closed as duplicate?
- A *Top 5's* list of GIS software?
- Is faking a question the only way an user can post an interesting small tutorial?
- Framing (asking) good Questions for GIS Stack Exchange?
I also saw other meta questions on different SEs that were basically 'link questions here that should be considered cannonical' so mods could do some arranging. But I haven't seen that here on GIS.SE or really people creating CW questions as described (maybe I've missed it). Should I go ahead and create a Community Wiki question? And also the matching CW answer, or flag it for a mod to copy the canonical answer to?
My second thought was how about a canonical tag? I love the
loose-canon idea from the 'Top 5' Question above.