Changeset No. Date Contributor Comment
12018-05-14 11:50:21 UTChoream_telenav hello, I saw that you added a conditional turn restriction based on OSC; but I can't see it; are you sure it's there? because as I can see you also have a "only_left" sign
22018-05-14 16:42:23 UTCMinh Nguyen I was referring to this image:
Apparently I was off by one intersection; fixed in changeset 58958432.
12017-07-18 05:23:24 UTCstevea I think you should change (fix!) your tripplanner then. Not make changes to the map data which make a accurate tags no longer true. Please revert this change and fix your software, not tag the data with lies so you don't have to.
22017-07-19 21:45:27 UTCMinh Nguyen FWIW, a software fix is being tracked in <>.
32017-07-19 21:53:27 UTCstevea Nice work, Minh and everybody involved!
42018-04-10 04:21:06 UTCMinh Nguyen This change has been reverted in changeset 57958669. It’s been nine months with no traction on that OpenTripPlanner ticket. Meanwhile, OSRM would correctly tell cyclists to dismount here, but for the lack of a bicycle=dismount tag. The signs here are very clear about requiring cyclists to dism...
12018-04-09 05:42:34 UTCMinh Nguyen Remember to split the off-ramp from the on-ramp. Otherwise, routers will say the wrong destination for the on-ramp. Also, the ref prefix for state routes in Ohio is “SR”, not “OH”. (Fixed in changeset 57929510.)
12018-03-27 20:58:29 UTCMinh Nguyen Actually, the population and census tags previously contained the 2000 count – almost two decades out of date.
12018-03-19 22:59:31 UTCjerrad Do not use footpaths to define a patio.
Published using OSMCha:
22018-03-19 23:51:48 UTCMinh Nguyen Hi Doublec8527, I’ve been meaning to thank you for the improvements you’ve been making around Madeira and Kenwood lately. We need more locals like you to help represent Cincinnati well. :-)

A couple suggestions for future reference:

• As Jerrad mentioned above, there’s a...
12018-03-17 22:55:12 UTCMinh Nguyen Hi, Pheasant Hills isn’t a park, it’s a residential subdivision. By the way, there are plenty of parks in Loveland that could use more attention. For example, you could map swingsets or other playground equipment.
12018-03-04 09:51:04 UTCMinh Nguyen Unfortunately, this edit removed the casino building from the map. Note that the entire property is already included as JACK Cincinnati Casino; this is just the main building. I’ve fixed the building as part of changeset 56866218. Please let me know if you have any questions.
12017-12-12 09:36:20 UTCGerdP Hi!
I've corrected typo highway=4, please review :
22018-02-28 06:32:54 UTCMinh Nguyen Thanks! iD’s raw tag editor must’ve jumped around without my realizing it.
12018-02-15 18:19:33 UTCMinh Nguyen Thanks for adding the pronunciation of this road. Note that the name:pronunciation tag is written in the International Phonetic Alphabet (IPA) to avoid ambiguity. There’s more information about this tag at <>, including some links...
12018-01-14 10:17:01 UTCMinh Nguyen This changeset comment should be: Added lane counts, turn lanes, lane change restrictions, parking aisles, sidewalks, crosswalks, traffic lights, buildings; micromapped Sharonville Community Center & nearby parks; corrected forest to woods; disconnected woods from roads
12018-01-12 10:45:19 UTCMinh Nguyen Hello!
Thank you very much for your contributions to OpenStreetMap!
I reviewed your changeset on OSMCha and found some errors or elements
that could be mapped in a better way. Feel free to message me
to know more about it or visit http://learnosm.o...
22018-01-12 10:52:42 UTCnaoliv Reverted in changeset #55376267
12018-01-12 10:45:11 UTCMinh Nguyen Hello!
Thank you very much for your contributions to OpenStreetMap!
I reviewed your changeset on OSMCha and found some errors or elements
that could be mapped in a better way. Feel free to message me
to know more about it or visit http://learnosm.o...
22018-01-12 10:49:42 UTCConstable Looks like this changeset only removed objects which looked legit and messed up some roads, why did you do that? what were you trying to do?
32018-01-12 10:51:03 UTCnaoliv @Constable see
42018-01-12 10:52:33 UTCnaoliv And for the record, it was reverted in changeset #55376267
52018-01-12 10:53:25 UTCConstable Hi, thanks, I didn't see that. Thanks for the reverts as well!
12018-01-12 10:45:02 UTCMinh Nguyen Hello!
Thank you very much for your contributions to OpenStreetMap!
I reviewed your changeset on OSMCha and found some errors or elements
that could be mapped in a better way. Feel free to message me
to know more about it or visit http://learnosm.o...
22018-01-12 10:52:39 UTCnaoliv Reverted in changeset #55376267
12018-01-12 10:44:57 UTCMinh Nguyen Hello!
Thank you very much for your contributions to OpenStreetMap!
I reviewed your changeset on OSMCha and found some errors or elements
that could be mapped in a better way. Feel free to message me
to know more about it or visit http://learnosm.o...
22018-01-12 10:52:36 UTCnaoliv Reverted in changeset #55376267
12018-01-12 10:44:50 UTCMinh Nguyen Hello!
Thank you very much for your contributions to OpenStreetMap!
I reviewed your changeset on OSMCha and found some errors or elements
that could be mapped in a better way. Feel free to message me
to know more about it or visit http://learnosm.o...
22018-01-12 10:52:22 UTCnaoliv Reverted in changeset #55376267
12018-01-06 23:36:29 UTCMinh Nguyen FYI, this import contained some degenerate areas:
12018-01-01 02:40:52 UTCMinh Nguyen Source should be San José Public Works Department, not Bing.
12018-01-01 01:54:56 UTCMinh Nguyen Plugged several gaps in the imported data around street corners and where walkways through apartment complexes met sidewalks on public streets. Added noexit=yes, barrier=wall where appropriate to satisfy near-but-not-connected validator. Deleted a sidewalk segment that was actually a hedge.
12017-12-27 22:55:29 UTCMinh Nguyen Thanks for your recent contributions to the map along Beechmont! Regarding the area you mapped as “Current site of Dewey's Pizza and Silver Ladle”: the default aerial imagery from Bing is a bit outdated, as you’ve noticed, but you can click the Backgrounds button on the right side ...
12017-12-15 17:00:37 UTC3vivekb I don't know this area, but would say there is only one real path here? Is the bike and pedestrian path separte? Maybe we should just add bike tags to the existing path.
22017-12-15 20:14:12 UTCIcyMidnight They are right next to each other without any barriers, but there is a pedestrian lane and a cycle lane. I wasn't sure how to represent that so I did this. If you think the other way is better you can change it and I won't be offended :)

Here's a picture for reference:
32017-12-15 21:03:46 UTCMinh Nguyen Since there’s no physical separation, a single way would be more accurate. But you could use bicycle:lanes and foot:lanes tags to say which side to walk or bike on.
42017-12-15 21:05:07 UTCMinh Nguyen And colour:lanes while we’re at it. :-P There’s more information about lane-specific tags at
52017-12-16 02:23:55 UTCIcyMidnight Made the changes you suggested. Thanks!
12017-12-11 00:44:16 UTCMinh Nguyen …updated buildings
22017-12-11 00:45:24 UTCMinh Nguyen Also, this changeset moves the beginning of many turn:lanes tags to where the turn lane begins to be demarcated, as opposed to where the road only begins to widen.
12017-12-03 13:25:20 UTCMinh Nguyen This changeset introduced a speed limit expressed in miles per hour without an explicit unit, so it was interpreted as kilometers per hour. Fixed in changeset 54297467.
12017-12-01 10:46:55 UTCmueschel I found many tags like these in your edits:

Please watch out for correct tags, especially correct use of :forward and :backward!
22017-12-01 10:50:02 UTCMinh Nguyen Yikes, sorry about that! I’ve been manually entering these in iD, and unfortunately, iD silently adds the _1 instead of forcing me to notice the existing tag. I’ll double-check my edits for this error in the future. Thanks for noticing!
32017-12-01 10:59:28 UTCMinh Nguyen
12017-11-30 17:00:31 UTCMinh Nguyen I made a few corrections in changeset 54210692. Of note, it isn’t necessary to collapse a segregated intersection (such as at Red Bank and Duck Creek) down into one highway=traffic_signals node; mainstream routers are capable of treating it as one intersection despite having multiple intersect...
12017-11-16 19:26:10 UTCMinh Nguyen Also added emergency crossovers, advisory speed limits, height restrictions, and hazardous cargo designations.
12017-11-12 20:09:41 UTCMinh Nguyen Stale changeset comment. The real comment should’ve been: Added sidewalks #osmus-project-127 #c4sj #South-Bay-OSM
12017-11-12 01:54:04 UTCMinh Nguyen Rushville doesn’t meet the criteria for place=city. Based on its population, it should be place=village, though place=town is better since it’s a county seat and thus is more prominent than any other place in the county. I demoted the POI in changeset 53703346.
22017-11-15 19:32:54 UTCridixcr Hi Minh!

Thank you so much for the correction.

Have a nice day.
12017-11-10 10:05:15 UTCMinh Nguyen Thanks for this edit! I followed up in with a couple corrections. Let me know if you have any questions.
12017-11-06 06:38:47 UTCmanings You added a turn restriction on a cycle route. Curious if this is valid:

Keep on mapping.
22017-11-08 15:38:39 UTCTheBestIdea It is. Pavement markings indicate that north-bound bikers must make right turn onto S 4th St. You can see it on page 15 of the pdf linked below, and I've confirmed it in person.
32017-11-08 18:30:40 UTCMinh Nguyen Thanks for your diligence. FYI, as long as South 5th Place is tagged bicycle=yes, routers will be inclined to make the left turn anyways, except using the roadway instead of the bike path:
12017-09-18 10:07:24 UTCMinh Nguyen The newest aerial imagery available was Bing from a year ago, so I reached out to Niederman Family Farm on Facebook asking permission to use <> (from their homepage) as a source, and they agreed.
22017-09-20 17:26:17 UTCHarald Hartmann Hello Minh Nguyen. At you have used `xxx:disused` instead of `disused:xxx`. Please have a look at #newkey
32017-10-20 08:36:59 UTCMinh Nguyen Ah, I always mix that up. Thanks for the reminder.
12017-10-16 17:39:51 UTCMinh Nguyen Cross Country Roads was a source for this changeset.
12017-10-15 22:38:28 UTCMinh Nguyen Cross Country Roads was a source for this changeset.
12017-10-15 22:23:44 UTCMinh Nguyen Cross Country Roads was a source for some of these destinations.
12017-06-19 05:23:54 UTCoormilavinod hey Nick543 , welcome to OSM i have observed that you have added parks at that does not exists in reality. please make sure that you don't add such random edits to the map. i have reverted the changeset. happy mapping!!!
22017-10-07 22:41:34 UTCMinh Nguyen Reverted in changeset 49640101.
32017-10-07 22:41:46 UTCMinh Nguyen Reverted in changeset 52719120, rather.
12017-10-06 10:17:30 UTCHarald Hartmann Hello Minh Nguyen. At
you have tagged
`destination:pronuncation` instead of
`destination:pronunciation`, right? #typo
22017-10-06 10:20:33 UTCMinh Nguyen Good catch, thank you! Fixed in changeset 52678656.
12017-10-01 04:01:38 UTCMinh Nguyen This changeset has been reverted fully or in part by changeset 52526189 where the changeset comment is: Reverted changeset 52312743: imported geometries appear to be shifted by a significant distance
12017-09-30 21:28:12 UTCMinh Nguyen By the way, according to, the intention was for you to replace “YOUR COMMENTS” without your own comments about what you’ve done for this task, for example “Imported sidewalks and connected them to existing roads”.
12017-09-27 03:00:43 UTCMinh Nguyen This changeset has been reverted fully or in part by changeset 52401591 where the changeset comment is: Reverted changeset 52315777: accidental duplication of every feature in this area #osmus-project-127 #c4sj #South-Bay-OSM
22017-09-27 03:27:09 UTCMinh Nguyen This changeset duplicated every feature in the area. I’ve reverted this changeset in changeset 52401591.
32017-09-27 05:18:32 UTCMinh Nguyen Changeset 52402863 cleaned up a few more duplicate features.
12017-09-27 05:18:06 UTCMinh Nguyen This changeset missed a few duplicate features that had gotten joined to preexisting features in changeset 52372799. The remaining duplicate features were removed in changeset 52402863.
12017-09-27 04:08:50 UTCMinh Nguyen This changeset has been reverted fully or in part by changeset 52402022 where the changeset comment is: Reverted changeset 52313882: accidental duplication of every feature in this area #osmus-project-127 #c4sj #South-Bay-OSM
22017-09-27 05:11:37 UTCMinh Nguyen Some of changeset 52313882 was omitted from this reversion due to intervening edits; these ways were deleted in changeset 52402863.
12017-09-27 05:11:02 UTCMinh Nguyen Some of changeset 52313882 was omitted from this reversion due to intervening edits; these ways were deleted in changeset 52402863.
12015-07-08 16:35:12 UTCStellanL Unfortunately, a database cannot choose to not take something seriously. All changes in OpenStreetMap are seen by all users. Please head over to Opengeofiction if you want to draw fictional maps or use for playing around.
22017-09-24 21:12:56 UTCMinh Nguyen I reverted the rest of yapple’s edits in changeset 52335717.
12017-06-14 09:42:47 UTCMinh Nguyen Thanks for your contributions! As you add stoplines, please remember to connect them to the roadways, as that would be more topologically correct.

In fact, since most roadways in OSM are modeled as lines rather than areas, most existing software prefers that stopping positions be mapped as [highw...
22017-09-24 06:51:06 UTCGerdP A typical problem with this approach is here:
The stop line is now part of the sidewalk (and still not part of the major road)
I don't think that a way with highway=stopline is any better than a node on the road with highway=stop.
It is nearly useless ...
32017-09-24 06:56:29 UTCMinh Nguyen There’s some additional discussion about this stopline mapping effort in the thread starting at <>.
42017-09-24 07:36:45 UTCGerdP @Minh Nguyen : Thanks for the link.
I noticed that the number of ways with highway=stopline decreased from ~17500 to < 11000 during the last days. Not sure why.
52017-09-24 07:52:29 UTCMinh Nguyen pflier is retagging highway=stopline to road_marking=solid_stop_line at the suggestion of those on the talk-us thread. I welcome this change, and I agree with GerdP that the ways should be connected to the roads they intersect.
12017-09-23 23:13:47 UTCMinh Nguyen This changeset inadvertently duplicated most features in downtown San José. Reverted in changesets 52315977 and 52316818. Everything appears to be back to normal. 👍
12017-09-19 01:57:39 UTCMinh Nguyen Typo: that should’ve been Almaden, not, “Los Amaden”, in the changeset comment.
12017-09-18 23:50:04 UTCMinh Nguyen Hi Doug, note that the maxspeed tag is in kilometers per hour by default. If you want to express a speed limit in miles per hour, please indicate the unit, e.g., maxspeed=25 mph. Thanks!
12017-09-17 23:41:03 UTCMinh Nguyen Since the available imagery providers are years out of date, I used <> as the source for this changeset. Before starting this changeset, I contacted Wendel Farms on Face...
12017-08-09 00:00:03 UTCMinh Nguyen Hi Edward, thanks for your contributions to OSM! Always happy to see more Cincinnatians around here. :-)

I noticed that you added a driveway but connected it to a power line. Since the two features aren’t connected in reality, please avoid connecting them to OSM. If you make an accidental c...
22017-08-31 05:24:22 UTCMinh Nguyen Fixed in changeset 51598525.
12017-07-04 21:05:30 UTCMinh Nguyen While “CHP Officer John Pedro Memorial Highway” may be signposted in a few spots, it isn’t signposted prominently or frequently enough for general usage. Changeset 50044505 moves it to the official_name tag and restores “Cabrillo Highway”, which is the legislatively def...
22017-07-05 08:49:25 UTCstevea Really, Minh? OK, if you think this is more correct. Are you sure you're not checking on many of or all my edits since 2009? I do live here and see the signs (I was just driving this stretch of highway TODAY), but if you want to "localize" this and call the whole stretch Cabrillo Highwa...
32017-07-05 09:09:57 UTCMinh Nguyen Haha, no, I’m not stalking you! :-D A coworker of mine pointed out how the Mapbox Navigation SDK was trying to say, “Continue on CA 1, CHP Officer John Pedro Memorial Highway, for 14 miles”. It took almost 7 seconds to say this mouthful, and the corresponding label in the UI shrank...
42017-07-05 09:32:26 UTCstevea So, am I understanding you to say is that tagging what the signs say is "wrong" (or less right than"on the ground verifiable") and that what the name tag SHOULD say for corporate consumers of OSM data (like Mapbox and Foursquare...) is what corporate consumers of OSM data like Ma...
52017-07-05 10:15:02 UTCMinh Nguyen No, that’s not at all what I’m saying. Just to be clear, I believe we’re talking about these signs:

As opposed to these signs, which I think do call for using the name tag:
62017-07-05 10:19:41 UTCMinh Nguyen Incidentally, the Mapbox Navigation SDK is open source, and so is the routing software that powers it:

I understand that it’d be inappropriate to tailor our mapping to any particular router, b...
72017-07-05 18:37:09 UTCstevea Thanks for the detailed explanation, Minh, though I believe you walk a very fine line here.
12017-06-28 22:37:54 UTCMinh Nguyen Phase II of the BART Silicon Valley project has not yet begun construction. In fact, funding hasn’t even been fully secured for it yet.
22017-06-28 22:41:44 UTCMinh Nguyen Construction won’t begin until late 2018:

Reverted in changeset 49904054. Please let me know if you have any questions.
12017-06-05 09:24:48 UTCMinh Nguyen Also added or adjusted several businesses downtown.
12017-04-05 03:58:41 UTCMinh Nguyen Thanks!
12017-03-19 03:22:04 UTCMinh Nguyen Thanks for this contribution. FYI, OSM isn’t allowed to accept data derived from Google Maps due to copyright issues, although it’s OK to use it to corroborate information you obtain through other means. It’s unfortunate that the Bing aerial imagery is a bit outdated in this area. ...
12017-03-08 18:29:50 UTCMinh Nguyen This resolves note #876899.
12017-03-03 09:55:45 UTCMinh Nguyen The GNIS import included some Catholic parish names in the West Side of Cincinnati. Locals will use these names in cases where the parish still exists, but St. Jacob’s no longer appears to be a parish. (St. James is right around the block from this POI.)
12017-02-19 05:30:50 UTCMinh Nguyen Do you know the names of this subdivision, by any chance? Named landuse areas would help to make this part of the map easier to navigate.
22017-02-19 05:31:16 UTCMinh Nguyen (The name of this subdivision, that is.)
12017-02-12 07:03:42 UTCMinh Nguyen These changes have been reverted in changeset 46012761. You’re welcome to add parks and sidewalks to OpenStreetMap, but please make sure they reflect the real world. In experimenting with this part of the map, you moved some streets way out of place, potentially impacting routing. There are pl...
12017-01-20 14:06:07 UTCJohnny Mapperseed Yo!

Is it cool if I add a wikidata tag to the stadium?

Thank you!
22017-01-20 15:54:21 UTCMinh Nguyen Hi, absolutely – this area could use a lot more Wikidata tags. 😀
12017-01-11 11:00:41 UTCMinh Nguyen I’m a bit puzzled by your addition of <>. The website you tagged doesn’t make it sound like much of a museum.
12016-12-01 20:36:36 UTCMinh Nguyen I undid most of this changeset in changeset 44096514. Don’t use the name field in MAPS.ME to replace a Vietnamese name with a description in Italian. If MAPS.ME lacks a way to add a description in the proper description tag, please find a way to add a note instead of modifying the POI. Thank y...
12016-12-01 20:27:11 UTCMinh Nguyen This changeset replaced the Vietnamese name of this museum an the Italian translation. I fixed the issue in changeset 44096307.
12016-11-20 04:52:48 UTCMinh Nguyen This changeset added the wrong Wikidata entity for Yên Bình. Q8052180 is for a district (huyện), whereas Q10837974 is for that district’s capital town (thị trấn). I’ve clarified the Wikidata entities and also corrected the wikidata tag in changeset 43814653.
22016-11-21 04:21:10 UTCnammala Thanks Minh Nguyen for clarifying and correcting it
12016-11-19 19:46:13 UTCMinh Nguyen This changeset turned a residential landuse area into a residential street area that covered an entire city. I reverted this change in changeset 43808341.
12016-11-19 00:39:13 UTCMinh Nguyen I reverted this change in changeset 43785169 because Q10824750 is for a Thanh Hà in a different province. Thanh Hóa province does have two Thanh Hà villages (thôn), but they aren’t in this part of the province. I’ve added a FIXME tag and will re-add wiki tags i...
22016-11-19 00:51:13 UTCMinh Nguyen For what it’s worth, this POI was originally part of an import that tagged all places as place=town. Clearly there’s a place here, but the author of the import has said that POIs that don’t make sense should be deleted.
32016-11-21 07:29:26 UTCnikhilprabhakar Thanks for the correction Minh. Lemme know if you need any help with the clean up if you are encountering more of this.
12016-11-19 00:42:06 UTCMinh Nguyen See changeset 43190645 for discussion in English.
12016-11-15 23:24:31 UTCMinh Nguyen Specifically, this changeset reverted changeset 43455064.
12016-11-15 23:24:11 UTCMinh Nguyen This changeset deleted buildings instead of adding them. Presumably this was an accident, so I reverted it in changeset 43683918. Please let me know if you have any questions.
12016-11-02 23:37:02 UTCMinh Nguyen That’s a lot of parking in Peebles. 😬
22016-11-03 00:36:29 UTCNate_Wessel Oh gosh. I must have been copy-pasting tags a little too quickly D:

Good catch!
12016-09-19 07:37:45 UTCMinh Nguyen Tôi đã lùi lại bộ thay đổi này: <>.
12016-09-19 07:15:36 UTCMinh Nguyen Bộ thay đổi này lùi lại <> vì nó thay đổi tên thị xã thay vì thêm địa điểm khác.
12016-09-19 07:12:51 UTCMinh Nguyen Bạn đã đổi tên thị trấn thay vì thêm salon. Tôi đã lùi lại thay đổi này trong <>. Nếu bạn muốn thêm salon, xin nhấn chuột vào nút “Điểm&rd...
12016-09-14 02:56:50 UTCMinh Nguyen s/Walgovel/Waldvogel/
12016-08-15 11:09:44 UTCMinh Nguyen To clarify, the semicolon-merging and lane-splitting was what happened to this road before I cleaned it up.
12016-07-10 03:41:44 UTCMinh Nguyen This was me, accidentally saving a changeset in geoMapTool. I reverted this changeset in 40621796.
12016-02-04 21:24:38 UTCMinh Nguyen This edit incorrectly moved the highway on-ramp onto the nearby BART tracks. I corrected the mistaken in changeset 37008781.
22016-02-05 09:10:22 UTCandygol Thank you Minh for reviewing of my edits 👍. Maybe I accidentally moved this part of ways while dragging the map.
12016-01-28 17:35:15 UTCLuis36995 Hi
this line is correct, is not like the image bing
22016-01-29 07:04:00 UTCMinh Nguyen The Bing imagery is quite out of date in San José. I drive down this road frequently and can confirm that the on-ramp was realigned to accommodate more cars during rush hour. In the Bing imagery, you can see the new ramp under construction, along with various construction vehicles.
12015-11-08 19:29:41 UTCmaxerickson I haven't looked at more than a couple, but it looks like a bunch of the refs on ways in this changeset have been set to "IN XX", which I think must be a mistake, as they are in Ohio.
22015-11-09 01:00:17 UTCMinh Nguyen re Ohio:
32015-11-09 01:20:23 UTCMinh Nguyen This is definitely a mistake. I usually monitor Ohio for changes to the OH ### format, but this land grab by Indiana flew under my radar. ;-)
12015-11-09 00:58:49 UTCMinh Nguyen The ref changes in this changeset are contrary to longstanding consensus among Ohio mappers (not to mention real world usage). There’s a full explanation at <>, although something to that effect has been documented on the wiki for ye...
22015-11-09 01:02:05 UTCMinh Nguyen And
12015-09-28 00:39:40 UTCMinh Nguyen This changeset also redraws Maple Dale Elementary, which was completely rebuilt/reconfigured.
12015-09-26 01:39:40 UTCMinh Nguyen Looks an odd editor bug, but several of these bus stop names have numbers randomly inserted in. I removed them in changeset 34255087. I’ve never ridden TANK before, so let me know if this is some strange convention they have. :-)
22015-09-26 03:49:30 UTCNate_Wessel Oh, how strange. I'm surprised I didn't catch that... suppose I never went back for a second look. Good catch!
12015-09-25 19:09:03 UTCMinh Nguyen The Drees Pavilion overlook area definitely isn’t landuse=commercial. That tag is meant for office parks…
22015-09-26 00:31:31 UTClrhill I will defer to your change. However, as it frequently serves as a banquet hall / reception hall that brings large traffic volumes not truly associated with the parks' recreational use, I felt that its use should be noted as something other than park. Many zoning codes includes banquet halls in co...
32015-09-26 01:30:07 UTCMinh Nguyen That's a good point that I hadn't considered, although OSM's landuse tag isn't intended to strictly match zoning in every case. (We also don't tend to subdivide landuse areas according to legal subdivisions like you'd find on a tax assessor's map.) I did go ahead and tag the building as an event ven...
12015-09-24 22:51:32 UTCMinh Nguyen Hi, it looks like you accidentally commandeered the Tempe point of interest (POI) for the SkipperBud’s boat shop. :-) I cleaned things up in <>. In the future, please create a separate POI when you want to add something to the map. If you ne...
12015-04-28 04:13:40 UTCNate_Wessel Is it in the future if the infrastructure is already finished and in place? Or should it be a route relation (presumed active) that brings the stop into existence?

Can a bus stop exist without a bus? Would it matter if that bus were in the past or the future? Would it demand a location between bo...
22015-04-28 05:24:02 UTCMinh Nguyen I figured that OSM-based public transit routers would have no way of knowing that the stops have no service yet. The poor hapless users would be waiting far longer than the standard Metro wait…

For context, I was getting a bit fed up with the many under-construction and proposed BART and M...
32015-09-22 18:39:08 UTCMinh Nguyen After tagging enough “empty” VTA bus stops in San José (with a shelter or bench and a Bus Stop sign that lists no routes), I’ve come around to the idea that the magnificent new streetcar shelters should be tagged as real stops that don’t yet belong to any route relatio...
12015-09-13 09:03:18 UTCMinh Nguyen Changeset 33995382 corrects track information in and out of Millbrae station.
12015-09-06 23:37:06 UTCSomeoneElse This looks very much like a mechanical edit. Was it discussed anywhere first, as it should have been according to ?
22015-09-07 06:43:32 UTCAury88 Hi SomeoneElse.
the only automated procedures were the import (from the taginfo link in _Fitness_centre)
and the filter in josm to hide the changed element during the edit, but the changes were done to singular element after a one by one element check. if this procedure can...
32015-09-07 09:10:52 UTCSomeoneElse It's not (just) about "damaging the database" - it's about communicating what's happening. If someone extracts data or makes a map from OSM, it's helpful for them to know when there's a wholesale change to something that they might have been expecting.

Also, if a mapper is adding e.g...
42015-09-07 09:54:22 UTCAury88 I perfectly agree with your reasoning about the communication with the user.
My reasoning was that the odds are greater that users who use the old tags have already done for the areas of their knowledge, while new mappers will not be misled by the presence of that tag.
For the extracted data and m...
52015-09-10 18:25:39 UTCSomeoneElse I don't think that it's necessary to revert (from amenity=fitness_center to leisure=fitness_centre isn't a change of meaning, just fixing a typing error), but I'd certainly recheck the items in the changeset. If someone's got one thing wrong then they might have got others wrong too (for example, h...
62015-09-12 01:32:09 UTCMinh Nguyen Can you point to consensus about amenity=fitness_center being incorrect (despite the preference for UK spelling)? is very ambivalent on this point, and until this changeset, amenity=fitness_center was one of the more popular options. A public a...
72015-09-12 07:43:34 UTCAury88 Hi Minh Nguyen,
The linked wiki page said "The leisure tag is for places people go in their spare time, which is how most people use a gym." the use of amenity is due to an "overloaded with this tags in the early years of OpenStreetMap".
The use of leisure=fitness_center/cen...
82015-09-12 09:09:20 UTCAury88 sorry. the amenity=fitness_center/centre was the 4-5th most used tag in the wiki page list . the 2nd amenity=gym was (yet) the 3rd the leisure=fitness_center/centre was (yet) and sport=fitness (+ leisure=sport_centre) was (yet) the first
92015-09-12 17:30:37 UTCMinh Nguyen No worries, I’ve been known to get ahead of myself too, and it’s clear you had good intentions. :-) At this point, maybe the best course of action is to send a message to the mailing list. (Or post a diary entry.) Explain the change you made and the reasoning...
12015-08-23 16:45:25 UTCMinh Nguyen Thanks for adding this information – I had no idea it used to be a landfill. I changed some of the tags on this POI to be consistent w/ how historic features are often tagged. In iD, you can see them under “All tags” in the sidebar. Please let me know if you have any questions.
22015-08-24 13:14:08 UTCNick D'Amato You're welcome. I actually have a map of the extent of the landfill, if you think there is good way to represent that.
12015-08-07 21:12:25 UTCMinh Nguyen I sketched in the new interchange from (one-year-old) memory in changeset 33190964. Please feel free to correct it if it doesn’t match what you observed.
22015-08-07 21:24:42 UTCFTA Wow, nice work! I had my GoPro running when I went through here over winter break, but I never went back to track it down. Strangest thing to switch the side of the road the traffic goes on....
32015-08-07 21:28:59 UTCFTA Also, I resolved the note I added to this area regarding the intersection.
42015-08-11 05:15:10 UTCMinh Nguyen It is strange. I visited exactly a year ago; at the time, there were electronic signs to alert drivers to the change, and the local newspaper was full of questions about whether the increased flow was worth the confusion. MoDOT built the country’s first divergent diamond interchange up I-44 in...
12015-08-04 21:42:13 UTCMinh Nguyen Or rather:
12015-06-29 04:59:29 UTCMinh Nguyen I tried my best to transcribe a bilingual sign I took a photo of while passing by. The Amharic name is a little more detailed than the Engilsh name. It transliterates roughly to “Debre Genet St. Mary Beta-Christian Ethiopian Orthodox Tewahedo Church in San Jose”.
12015-05-11 08:59:14 UTCMinh Nguyen Good idea, though not everyone has easy access to Greek characters on their keyboards. I wonder if the Greek characters are better suited for `short_name`.

Also, Φ is phi, Τ is tau, and Θ is theta. In changeset 30993287, I took the Greek characters currently in `name` and expanded t...
22015-05-13 14:24:52 UTCNate_Wessel I'm sticking with name, because the greek characters are the only actual signs on the buildings.

Good call with the alt_names. Is there something like a tag for name:english?

I know I have one of those wrong (I think it was actually a Tau and not a Theta for one of them), but I'm on campus no...
32015-05-13 14:41:05 UTCNate_Wessel I know only enough ancient greek right now to be a danger. ;-)
42015-05-24 19:59:18 UTCMinh Nguyen `name:en` is for English. I went with `alt_name` because these expanded names are what people would tend to search for in a geocoder like Nominatim.
12015-04-26 22:21:17 UTCMinh Nguyen Thank you for taking the time to add these street names in. For legal reasons, OSM can’t accept information copied straight out of another map unless the authors of that map have given permission.

Would you mind obtaining permission from the c...
22015-04-29 13:40:37 UTCJerome50 I was able to drive through the cemetery and verify the names from the street signs posted there.
32015-04-29 16:07:46 UTCMinh Nguyen Awesome, thanks for taking the time to do that.
12015-04-26 22:58:11 UTCMinh Nguyen OSM classifies population centers based on population and prominence, regardless of legal status. That way software based on OSM don’t have to worry about every country’s definition of a city when labeling cities a certain way. So as a suburb to another city and as a place with under 100...
12015-04-26 22:49:07 UTCMinh Nguyen Bing aerial imagery in this area is a bit outdated (dating to summer 2010). The Mapbox Satellite layer is more up-to-date at zoom levels 13–17 in Ohio, drawing from NAIP 2013 imagery. You can see the mast’s shadow in that layer.
12015-04-26 22:42:49 UTCMinh Nguyen FYI, man_made=mast is the more appropriate tag for radio/broadcast/cell towers. man_made=tower is for things like watchtowers, and it doesn’t get a special icon on most maps.
12015-04-26 22:22:25 UTCMinh Nguyen Love these changeset comments – keep ’em coming! :-D
22015-04-27 00:29:49 UTCNate_Wessel Ha! I was trying to edit on my phone while I waited for the dentist. Took me 15 minutes to add that stupid hat shop.
12015-04-26 18:28:08 UTCMinh Nguyen Thank you for this edit, and welcome to OpenStreetMap! Note that we spell-out words like “Boulevard” rather than abbreviating them:
12015-04-26 18:24:28 UTCMinh Nguyen FYI, Bing aerial imagery in this area dates to March 2012:

The Mapbox Satellite layer is more up-to-date at z13–17, as it comes from NAIP 2013.
12015-04-26 05:23:56 UTCMinh Nguyen I undid some of these changes in changeset 30491130. railway=construction construction=tram_stop is a well-used and well-documented way of indicating that a subway station is under construction. The name=* tag is not intended for descriptive text, even in parentheses.
22015-04-26 16:08:00 UTCstevea Of course, Minh: thank you for your corrections and especially for documenting here the correct way to tag this so I know how to do this if/as I find such construction in the future.
12015-03-24 08:29:44 UTCMinh Nguyen Just a friendly reminder that Ohioan mappers have a longstanding consensus to use the prefix “SR” on ways along Ohio state routes, due to the prevailing style used throughout the state by residents, the media, government, etc. See f...
12015-03-23 05:35:51 UTCMinh Nguyen The Caldwell–Seymore trail is definitely either a cycleway or a footway. Neither tag implies anything about build quality, surface material, or routeability. If it’s meant primarily for cyclists, it’s a cycleway; if it’s primarily for pedestrians, it’s a footway. highwa...
12015-03-18 06:15:28 UTCBryce C Nesbitt Thanks on the tool stand. Could you confirm there are really TWO of these right next to each other, as currently mapped?
22015-03-18 06:16:40 UTCMinh Nguyen Yes, you can see a photo of the stands here:
32015-03-18 06:22:23 UTCMinh Nguyen Oh, one of them is actually a compressed air pump. I’ve retagged it amenity=compressed_air, but is brand=Dero still accurate in that case?
42015-03-19 07:55:22 UTCBryce C Nesbitt No, brand=Dero does not apply.

However service:bicycle:pump=no is misleading... as in fact there's a pump nearby. Interesting quandary how to tag.
52015-03-19 07:55:58 UTCBryce C Nesbitt Normally the Dero stations are sold as a two part kit: pump & repair stand. Other brands integrate the pump into the stand.
12015-03-14 05:46:02 UTCMinh Nguyen Thank you for adding these township boundaries. But wherever possible, please start with the USGS Topographic Maps layer rather than the Census Bureau’s TIGER data. Although TIGER is much more up-to-date than the USGS topo maps, TIGER is also much cruder as it’s primarily meant for demog...
12015-03-14 04:35:54 UTCMinh Nguyen Thank you! I’ve been undeleting an old, correct version of the OH–WV boundary in Potlatch 1, but that editor often has selection glitches these days… it looks great now.
12015-03-11 05:28:51 UTCMinh Nguyen What problems exactly did you clean up? It looks like you created additional overlapping ways for one township relation but not adjoining townships. I’m mainly asking so I can avoid causing more problems in the future.
22015-03-13 09:48:03 UTCfx99 responded by PN
12015-02-22 22:34:07 UTCMinh Nguyen It looks like this changeset merged the OH–KY boundary with the Ohio River centerline. That’s incorrect: KY and WV own most of the Ohio River (at the expense of OH, IN, and IL). See for example:
22015-02-22 22:35:16 UTCMinh Nguyen The previous version of this boundary was based on the USGS topo layer which, while not completely up-to-date with the ’90s court rulings, is much more accurate than the centerline.
32015-02-22 23:31:31 UTCMinh Nguyen
42015-02-23 00:18:20 UTCNate_Wessel Well of course there is a page just about that...

To be honest, I'm not sure why boundaries exist in OSM if they can't be related to a real feature... but I bet there's a page just for that dicussion already too.

Is there an easy way to fix it? Or does it need to be reverted somehow?
52015-02-23 00:19:27 UTCNate_Wessel Ah! Looks like it's already fixed. My tiles just hadn't updated.
62015-02-23 00:33:41 UTCMinh Nguyen River boundaries are more the exception than the rule. We pretty much need them for completeness’ sake if we’re going to include land boundaries.

Times like these make me very glad that Potlatch 1 is still around. (Its revert feature is just as easy as Wikipedia’s, for better or...
12015-02-11 11:55:11 UTCMinh Nguyen OGRIP’s LBRS is public domain? That’s awesome – where does it say that?
22015-02-11 11:57:38 UTCMinh Nguyen Never mind, found it: <>. We should make a tile layer of it to trace with.
12015-01-16 11:07:58 UTCMinh Nguyen How recent was the change? When Wilmington got its bypass, I think it took a little while for ODOT to take all the signs down and hand the road over to the city and township.
22015-01-16 11:08:26 UTCMinh Nguyen …the bypassed road, that is.
12015-01-09 10:34:32 UTCMinh Nguyen These place nodes shouldn’t have been promoted to place=town. As documented at <>, the rule of thumb is to use place=town where the population is 10,000 or more. I’ve also been promoting county seats with only a few thousand residents to ...
12015-01-01 10:20:59 UTCMinh Nguyen Thanks for updating this interchange!
22015-01-03 01:10:26 UTCreportingsjr Thanks! I'll try to keep it updated as construction continues. Winter project until it is warm enough keep mapping local trails. :)
12014-11-23 06:17:27 UTCMinh Nguyen Please avoid copying verbatim from CAGIS datasets at this time. They’re free of charge but it isn’t clear whether we can use them in OSM yet. We’re trying to secure permission from them to license their data under terms compatible with OSM’s license. Until then, it’s fi...
22014-11-23 15:41:06 UTCgmensch So in the meantime, should I change the grounds to be what one would expect the property line to be? i.e. from road to fence?
32014-11-23 22:30:34 UTCMinh Nguyen Yes, that would be best. Thanks!

Also, the map currently shows Congregation Ohav Shalom as the only building on the Schilling schoolgrounds. However, from the aerial imagery, it seems like the synagogue is one wing of the building and the school is the other, and both share the same property. I t...
12014-11-15 11:43:09 UTCMinh Nguyen From humble beginnings…
22016-05-06 14:14:03 UTCEzekielT ?
32016-12-06 16:21:28 UTCRoadsguy Ah, the great "first."
42017-02-28 15:41:09 UTCNiedernhausenerJunge

"The very first contribution to OpenStreetMap was probably a road."
Turns out it wasn't
52017-07-23 01:33:07 UTCtuxayo What was it then? When seeing the nodes in this changeset, I can't find what they were.
62017-08-23 02:44:15 UTCDiego Sanguinetti The first of world :)
72018-04-03 09:56:35 UTCThe_Cute_Chick .
12014-11-11 12:03:45 UTCMinh Nguyen A single retail building can have multiple tenants: draw the building as one area; then, for each tenant, either add a point or draw an area overlapping part of the building (but not marked as a building).
22014-11-11 12:05:12 UTCMinh Nguyen Alternatively, if a strip mall looks like a bunch of buildings smooshed together, it’s also fine to draw each business as a separate building area, but make sure to join the buildings together.
12014-11-09 05:27:00 UTCMinh Nguyen No need to name the soccer field “Soccer Field”. Choosing the “Soccer field” option in iD adds a “sport=soccer” tag to the area. Although the main map doesn’t do anything special with “sport=soccer”, various alternative maps do. For example, once...
22014-11-09 05:28:46 UTCMinh Nguyen Oh, wrong link. Here’s the soccer field: <>.
12014-11-03 21:45:36 UTCMinh Nguyen By the way, you can often find names of creeks and lakes on the USGS Topographic Maps layer in either Potlatch or iD. (Though years out of date, it’s also really handy and accurate for county/township/city limits.)
12014-11-02 20:04:54 UTCMinh Nguyen Hi Nate, a couple of these `highway=tracks` are named roads, even if they’re unpaved. I’m thinking it might be more useful to tag them as `highway=residential` and add `surface=unpaved` (or gravel or dirt or whatever), since they could appear in addresses.

(That, and I’m happy t...
Minh Nguyen has contributed to 115 changeset discussions(s) with a total of 218 comment(s)