[HOT] bother adding source=Whatever to each object?

Dan S danstowell+osm at gmail.com
Tue Nov 4 08:36:13 UTC 2014


Andy - "imagery_used" is automatically added by iD, every time. You
won't see it as a tag you can add, it's added automatically to the
changeset.

2014-11-03 23:45 GMT+00:00 Andy Anderson <aanderson at amherst.edu>:
> Hi, Pat,
>
> Looking at OSM using the iD editor, when I type in “image” the only relevant
> tags that pop up are “image”,  “source:imagery”, and “source_type_imagery”;
> “imagery_used” is not an option, I have to type it in explicitly. Does this
> mean it’s not a very commonly used tag (?).
>
> It would be much better if this were automatic, in any case. Even with the
> easy-to-use Source button present, it’s a bit of a bother; it would be even
> more so if this type has to be typed or menued in every time. Theoretically
> one could switch background imagery even in the middle of an edit, which
> might warrant multiple tags, but that would probably be rare.
>
> — Andy
>
> On Nov 3, 2014, at 6:21 PM, Pat Tressel <ptressel at myuw.net> wrote:
>
> There was another thread relating to this a short while ago, so there's more
> relevant discussion there.
>
> Two notes:
>
> The source tag can hold other info besides imagery, e.g. it could tell who
> or what agency provided some item of information.  The iD imagery_used tag
> is more specific.  But historically, source has been used for imagery too.
>
> With respect to whether the source / imagery_used tag should go on features
> or changeset:  I raised this question at the end of the previous thread on
> this subject.  We don't want to lose the fact that something was traced with
> use of a particular set of imagery if someone edits a feature.  Let's take
> one specific case:  Say that someone enters a feature (say it's one point,
> just to be clear) using one set of imagery, and the imagery_used tag gets
> assigned to the changeset.  If someone later shifts that point, while using
> a different set of imagery, is it still possible to get back to the original
> changeset from the modified point?
>
> -- Pat
>
> On Mon, Nov 3, 2014 at 11:01 AM, Ray Kiddy <ray at ganymede.org> wrote:
>>
>> On Mon, 3 Nov 2014 19:51:52 +0100
>> Sander Deryckere <sanderd17 at gmail.com> wrote:
>>
>> > It's more logical to put it on the changeset.
>> >
>> > Like when you draw a building, and add source=bing. But then someone
>> > who lives there gives it a name, and forgets to alter the source, the
>> > object has data that can't be derived from the source. So it's in
>> > fact your edit operation that has a source, not the object itself.
>>
>> I had wondered about this when I saw multiple source values on an
>> object. I mean, which other attributes came from which source?
>> Technically the source should map to the subset of the attributes that
>> were observed from that source, but in real life, I would have no idea
>> how that could be presented in a way anyone would understand.
>>
>> > As such, source=Bing is by many mappers preferred on the changeset
>> > (also because it keeps the database a bit smaller).
>>
>> > When you edit with JOSM, you can add the source manually as a tag to
>> > the changeset (which is handy if your source is a survey or offline
>> > source). In iD, it automatically logs the imagery used in the
>> > changeset, but you don't get an option to give other sources (which
>> > is why many people still put a source on the objects).
>>
>> So I understand this to mean that if you are putting in an object from
>> the imagery in front of you, you do not need to do anything else. I am
>> not seeing that iD is attaching this anywhere but I may not be looking
>> in the right place. But as long as the database sees it, I do not need
>> to.
>>
>> Take away point, I do not need to set the source 100 times and I am
>> good with that.
>>
>> cheers - ray
>>
>> > Regards,
>> > Sander
>> >
>> > 2014-11-03 19:41 GMT+01:00 Ray Kiddy <ray at ganymede.org>:
>> >
>> > >
>> > > Hello -
>> > >
>> > > This is probably a somewhat basic question about editing for HOT
>> > > tasks.
>> > >
>> > > As I have been editing in various HOT tasks, I have been adding
>> > > something like source=Bing (where that is the imagery) onto every
>> > > road, every building, every ... everything that I create. Need I
>> > > bother with this?
>> > >
>> > > I have seen in (perhaps just some tasks') instructions that I could
>> > > also just put this on the changeset comment. So I can just add it
>> > > to the changeset once instead of adding it to the object 100 times?
>> > >
>> > > If it could be put on the changeset comment and not on every object,
>> > > that would be convenient. It would also explain why, when I look at
>> > > all of the objects others have created, I hardly ever see a source
>> > > value.
>> > >
>> > > So, am I doing too much work by re-entering the source value every
>> > > time? What is the level of diligence expected here?
>> > >
>> > > thanx - ray
>> > >
>> > > _______________________________________________
>> > > HOT mailing list
>> > > HOT at openstreetmap.org
>> > > https://lists.openstreetmap.org/listinfo/hot
>> > >
>>
>>
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