[HOT] Question about background image alignment

[Blake Girardot]

Hi,

Thank you both very much for replying.

I am new to OSM and HOT so please forgive my ignorance.

It would seem that if I adjust the one section I am working on to align 
the background with the previously mapped roads and buildings, it would 
be throwing off the mapping in other sections on the larger map? Is that 
correct? Is it a problem?

The section that raises this issue for me is this one:

http://www.openstreetmap.org/edit?editor=id&#map=15/8.2224/-11.2610

specifically the village area Naiyama.

If I understand your advice correctly, I would correct the background 
image alignment to match the roads and some of the buildings and then 
fix the rest of the buildings in the village.

Regards,
Blake Girardot



On 8/10/2014 4:24 AM, Pierre Béland wrote:
> yes
>
> As I have explained before, you want to keep the general geometry of a
> village (distances, angles between the objects) to be the same. Then if
> people have traced previously, you first move the image to align with
> what was there before.
>
> If this village have 30 meter offset with the rest of the world, this is
> less a problem then 30 meters between two buildings.
> Pierre
>
> ------------------------------------------------------------------------
> *De :* Ralf Stephan <gtrwst9 at gmail.com>
> *À :* Blake Girardot <bgirardot at gmail.com>
> *Cc :* "hot at openstreetmap.org" <hot at openstreetmap.org>
> *Envoyé le :* Dimanche 10 août 2014 2h11
> *Objet :* Re: [HOT] Question about background image alignment
>
> I can only tell from my perspective, I would look what's the offset of
> the majority of
> objects in the tile and the surrounding tiles, and use that as your offset.
>
> This presupposes that you use JOSM. With the browser it would be difficult.
>
> A question would be then if you should correct the minority of
> misaligned objects. I don't know but I guess so.
>
> Regards,
>
>
>
>
> On Sun, Aug 10, 2014 at 7:22 AM, Blake Girardot <bgirardot at gmail.com
> <mailto:bgirardot at gmail.com>> wrote:
>
>     Hi, I apologize in advance if this is answered somewhere but I did
>     not find the answer.
>
>     Working on the #586 - Ebola Outbreak, Panguma (Sierra Leone) --
>     Updated Imagery, 2014-07-15 task I have seen a few places where it
>     looks like the background image is misaligned with some of the
>     mapped objects (buildings and roads), but other objects were mapped
>     with the current mis alignment.
>
>     What should a person do in that situation?
>
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