OpenStreetMap

About a month ago I started doing this thing called geocaching. I had heard about it from someone and was intrigued. We had one right outside our apartment so I took my family on a tiny walk and logged it. Since then I have continued to search for and log caches.

Because I am a geek and like gadgets I realized that I could buy a dedicated GPS instead of using my phone. So in true megalomania fashion I bought most feature rich thing I could find, the Garmin Monterra.

The thing is huge and heavy, not something you want to bring on a hike unless you have leg muscles like the ballerina Jean-Calude Van Damme. Apart from that though, I like the thing. It feels like I am back in the ninetieth when people were carrying around those huge phones, except I can not use mine for phone calls.

So now I end up going for walks all the time, to find caches everywhere. I also record the walks on my new toy.

So the other day I was going to checkout some maps for the device, OSM was of course on the table because who has not heard of that one. I downloaded an IMG file and put it on my device. Imagine my horror and chills going down my spine when the little arrow is placed in a mostly empty area with a single house standing lonely next to me. -This isn’t right! I am pretty sure I myself am located in a building, and that there are several apartment buildings in my area.

This took me to openstreetmaps.org. And there it was, the glistering, inviting, and mysteriously green Edit-button. I pressed it and I could feel my pulse increasing as my browser blacked out before loading the map. I made an edit, then one more, and then some. I sat reading tutorials and added things the rest of the day. I was home sick from work so I had the opportunity to at least exercise my brain. After a while I noted one could upload GPS traces, now there was something I could use I thought. Problem was though, that I wanted to make this as easy as possible. I downloaded and installed Vespucci on my Monterra. It felt a bit old but I found an entry where you could upload a GPS-trace to the OSM-server. I tried it and it worked. Only thing that bothers me is that it would be easier to just press share and have it upload directly to the server. I do have Locus map Pro on the thing as well, and that one can also upload the trace, among the other gazillion things it does. Maybe I could search the Google-Play store for more apps.

The issue at hand though is not my device but that I can not see all my traces, I can only see one at a time. They do get registered on the server, and I even get an email telling me that it has been imported. I see them under my traces, and there I can look at them one by one on the map. But I want them all, and at the same time of course! I marked the show public GPS-traces and some of them show up but strangely none of mine. Maybe it’s a bug, or a weird feature. But I want to overcome this so I map things better and let others use my traces.

Next task is to read how to make steaming fresh IMG files for my GPS device so I can enjoy the fruits of my labour.

Location: Brasstorp, Oxelösund, Oxelösunds kommun, Södermanland County, 613 41, Sweden

Discussion

Comment from escada on 19 September 2014 at 15:55

In iD, press the icon representing the layers (three stacked squares). Check “OpenStreetMap GPS traces”, et voila: all traces that were uploaded by other people can be seen. A bit more on this feature: https://www.mapbox.com/blog/openstreetmap-gps-layer/

If you really are serious about editing, I suggest you start using JOSM. It can easily show multiple GPS traces and be customized to your needs.

Comment from arogen on 19 September 2014 at 16:03

Thanks Escada. I did just that, but I only saw other peoples traces and not my own. I will take on JOSM when I have gotten a little bit better at this. I like the hardcore stuff, I drink my coffee black ;-)

Comment from snowflower on 19 September 2014 at 16:28

When you are using your Garmin make sure that the Map Datum is set to same Datum used on other mapping programs and maps that you want to use with it. Otherwise, you could be up to a mile off the location where you make a waypoint. Consider this: Map Datum is the method used to make the map, ie. conic projection, Mercator projection, etc. is way land/water surface is stretched to make it flat. This is a major mistake that many folks make by not using Map Datum settings on the GPS.

Comment from arogen on 19 September 2014 at 16:31

Snowflower thank you! I have only seen that in my GPS settings and thought that I better leave it at the default wgs1984 or something like that. How do I know what datum the maps uses? I will google it, and thank you very much for bringing this to my attention :-)

Comment from aseerel4c26 on 20 September 2014 at 13:12

Thanks for writing up this story, that was nice to read!

WGS84 is right. See for example: Converting_to_WGS84

In editors which download traces from the server via the API your uploaded traces are available as soon as they are imported. Maybe the gps traces tile layer, which is used by iD instead of directly using the traces, may need more time to be updated. Potlatch2 and JOSM are examples for editors which download/show the traces directly from the server. I have tested it in JOSM with this of your traces. I get it if I download traces in that map region in JOSM.

Comment from arogen on 20 September 2014 at 13:32

Thanks aseerel4c26! I see that I better leave my GPS in wgs84 mode. I wouldn’t want to convert everything, and I enjoy uploading my traces so everyone can use them. I have moved to JOSM and are putting up houses in my village. I’m counting on going high on the highscore list tomorrow :-D I have not yet tried traces in JOSM but will soon, I just have to map all( Yes there is something wrong with me) houses in my village first.

Comment from aseerel4c26 on 21 September 2014 at 01:08

Yes since you had wgs84 all the time it is fine.

Take care, do not do too much! ;-) And it is no highscore game, too much speed is not that good, because likely you may notice better ways to map or notice that you are doing something not optimal. Great that you are helping OSM that much!

However, enjoy and do not forget to go outside and survey! :-)

Comment from arogen on 21 September 2014 at 05:22

Hahaha, that link was hilarious aseerel4c26! 😀 Yes, since started mapping I have noticed a need for going to visit places that I am unsure of ☺

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