Find cache by cache owner name

Question

I am trying to complete a challenge in which you have to have a cache placed by someone with a user ID starting with each letter of the alphabet and numbers 0 - 9. I have just several letters and numbers left, so I want to search only for caches placed with those specifics. For example, I want to do a search for caches placed by someone whose user name starts with an 8 and another one with user IDs starting with a 9. Does anyone know how I can do this?

Answer 1

Just realised you could (if you are a Project-GC paying customer) collect an area of caches eg via Map Compare into a vGPX (click on the gps icon in the top right of the project-gc page) which you can then sort by owner.

Progect-GC > Tools > Map Compare. Ignore compare with, add your name and select a region of interest. Select Show > None found. At the top of the table below the map click the select all box just under the big Add button, then click the big Add button.

Find the GPS icon on the top right of the page and click it. Sort the table by Owner. Again, just has Owner Name, Owner ID is not available here.

Answer 2

Probably the easiest way is to do a pocket query of the area of interest, then import into a desktop application, such as Garmin BaseCamp (Windows or Mac). From there go File > Import into my collection (runs out of memory with 18000 caches, so choose a smaller number). Then go View > Swap Map and Data Views then click on the Placed By column header to sort by owner.

Not that this is the placed by field, not the owner field, but in most cases this will match.

In the end I wrote an Excel script that does a much better job of importing and displaying geocache data (to help determine if I qualify for challenge cache before geocheckers came out), you are welcome to it, send me your email address in a geocaching message and I can send it to you. 

Just realised you asked for user id, not user name. This data is not included in a gpx file, so the above method will not work. I suspect the only solutions for used ID are hard.

Answer 3

https://project-gc.com/Home/Search#AdvancedSearch