On holiday, I marked with my Garmin some points of interest - ancient monuments, associated car parking.

I've added one of these to Open Streetmap. Surely I should be able to use the coordinates recorded on the Garmin to set the exact location of my POI but I can't see how to do it.

Help, please?

Dave

asked 21 Aug '11, 12:12

flightmaker's gravatar image

flightmaker
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The JOSM editor has an option called "add node" in the "tools" menu that lets you specify an exact location for a new node, but you cannot move an existing node to an exact location (other than manually moving it and watching the coordinate display while you do).

It is possible to work around this using the following procedure (in JOSM):

  • load OSM data for region of interest
  • move existing node just a little
  • save data as .osm file, close JOSM
  • open .osm file in text editor, find node (search for "action='modify'"), change location in XML, save file
  • open JOSM, load file from disk, upload to OSM.

Another, slightly less complicated, option is to use the OSM Raw Editor (which will nonetheless require that you edit XML code by hand, but it does so in a browser window).

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answered 21 Aug '11, 12:22

Frederik%20Ramm's gravatar image

Frederik Ramm ♦
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accept rate: 24%

3

Also keep in mind that it doesn't make sense to move the node if it is already correct within a meter or two. Your GPS is most likely no more precise than that.

(21 Aug '11, 13:05) petschge

If you've marked waypoints on your Garmin, and you upload the trace to OSM, you can also add the waypoints to OSM directly in the Potlatch 2 online editor. Have a look at this trace - if you edit the area and zoom in you'll see an orange dot where a waypoint was marked in the middle. To convert it to a node, "alt-click" on it, select "advanced" mode in Potlatch and add any necessary tags (and remove any Garmin ones that don't belong in OSM, such as "cmt" and "extensions").

With Potlatch 2, this works provided the node isn't under an existing OSM way

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answered 21 Aug '11, 13:14

SomeoneElse's gravatar image

SomeoneElse ♦
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Ah interesting. Potlatch 1 used to ignore any waypoints contained within GPX files. This is quite a useful feature.

(22 Aug '11, 05:24) Ebenezer

Potlatch 1 doesn't ignore waypoints for me - trying editing the "this trace" link above with it and you'll see an orange dot for the waypoint.

Potlatch 1 actually has a couple of advantages over Potlatch 2 as far as waypoint handling goes - see trac 3669 and http://help.openstreetmap.org/questions/2355/waypoint-handling-in-potlatch-2

(22 Aug '11, 10:01) SomeoneElse ♦

If your garmin can be set to lat long degrees mode (etrex can) the marks recorded will be easy to plot in potlach 2. In edit mode there is an "option box" drop down menu box to show the lat long of mouse pointer which you tick. this works ok for the odd point but the answers above are neater for bigger jobs. For best accuracy the etrex and some other models can average the point with a number of readings. you can also view the error on the screen in some modes.

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answered 21 Aug '11, 16:01

andy%20mackey's gravatar image

andy mackey
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accept rate: 4%

That one works for me, for what I need to do at this time. Nice to see that another way point I marked with my Garmin exactly agrees with the POI placed on the map by another user.

(28 Aug '11, 10:53) flightmaker

With JOSM, which is the best editor, you can relocate any existing node with JOSM>Tools>Move Node

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answered 03 Aug '18, 15:52

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A_Pirard
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question asked: 21 Aug '11, 12:12

question was seen: 9,876 times

last updated: 03 Aug '18, 15:52

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