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map coverage corrected coordinates not shown as light blue circle

+1 vote
636 views
When searchin under Map Coverage it states that for caches with corrected coordinates on geocaching.com, a light blue circle should be shown. This is not the case for me.

Are there any specific configuration to be done, or any different way to search on thè map?
asked Oct 15, 2014 in Miscellaneous by ugle (130 points)

1 Answer

+1 vote
This is not really a question so I'm not sure what you mean but I'll try to answer anyway. The Map Coverage page uses corrected coordinates if you have entered them. This is, however, with the same caveat at any other use of corrected coordinates at Project-GC.

There are two ways to correct coordinates on PGC:

- Adding the correct coordinate in the Personal Cache Note field on the cache page.

- Adding the correct coordinate in the Corrected Coordinates field on the cache page.

Using the Personal Cache Note field will always work. The first coordinate (if there are several) from that field will be used.

Using the Corrected Coordinates field may also work, but the Groundspeak API (which is the interface we use to fetch data from geocaching.com) puts hurdles in the way here. There is no API function to fetch all caches that a user has corrected in this way, and there is no API function to find out which caches a user has corrected in this way to fetch only those. The effect of that is that in order to fetch all corrected coordinates for all users, we would need to fetch all caches in the world as all users. This is obviously not practical. Another problem with this method is that Groundspeak only allows you to correct the coordinates for Mysterys and Multis. If you want to correct a Letterbox or for that matter a Traditional where the coordinates are reported to be off, you are out of luck with this method and need to use the Personal Cache Note instead.
answered Oct 15, 2014 by pinkunicorn (Moderator) (146,750 points)
edited Oct 17, 2014 by pinkunicorn (Moderator)
Thanks.
I'll give it a try to also update the Personal Note field with my corrected coordinates, not just the Corrected Coordinates field on the cache page.

When you draw the map, do you query Groundspeak API every time, or do you use any cached data?
Just curiuos to know if there need to be some kind of refresh on PGC side to make this work, or if it is real-time fetch of data from Groundspeak for every map query. Good to know if I do the change on a couple of caches and it does not show up on the map anyway due to cached data.
We store the corrected coordinates after discovering them. I'm not sure how often we attempt to discover new cache notes, but give it a day to be on the safe side.
Your cache notes fields are refreshed about once per 24 hours. I would say that it almost always should work within 36 hours, but normally within 0-26h.
Excuse me for being new here but I need to ask. You refer to the Groundspeak API, but what happens when I change/correct coordinates on www.geocaching.com. I can "correct these coordinates" on an unknown. What field is then changed?

My wish is that I could trace those unknowns where I had edited (right or wrong) the coordinates in the service "Solved Mysteries" on project-gc.com (under Profile) but they do not show up when I try that.

Please shed some light.
Checking again on Map Coverage now, and it works.
So the trick is to have the corrected coordinates in Personal Note field.
Not so happy about the need then to update in two places, but at least it's working.

Thanks for the help!
Could you please open your question in a separate thread?
I'm going to close this thread one down as have been explained OK.
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