[HOT] why is the imagery I see going gray?

Pierre Béland pierzenh at yahoo.fr
Wed Nov 19 14:26:18 UTC 2014


The link below shows an area where the lower zoom image is the more recent, with new buildings. This is something to notice and play with surely to complete the map.
https://www.openstreetmap.org/#map=17/12.77672/-7.69694

 
 
Pierre 



________________________________
 De : althio forum <althio.forum at gmail.com>
À : hot <hot at openstreetmap.org> 
Envoyé le : Mercredi 19 novembre 2014 7h12
Objet : Re: [HOT] why is the imagery I see going gray?
 

It is rather unfornatunate but Daniel is right: starting with zoom 18
a new Bing imagery is loaded.
It is supposedly better all around I guess... but obviously useless in
this area with the cloud cover.

What you are seeing when your double-click (when you zoom in from
level 17 to 18) is a glimpse of the first imagery at same resolution
(not higher-resolution I would say) then after a while (depending on
your download speed) the second imagery is loaded and appears.

A pretty bad hack in JOSM could be to set the maximum temporarily to
17 in the imagery settings
bing[17]:http://www.bing.com/maps/
instead of default
bing[22]:http://www.bing.com/maps/ [and revert when you are done]
You could then zoom in above zoom 18 and the clouded imagery would not
appear. You would be left with initial imagery getting more and more
pixelated as you zoom in.

In any case (iD, JOSM, ...) it seems that Bing at zoom 17 is the best
imagery available in the area and it has to be coped with.

althio


On Wed, Nov 19, 2014 at 9:04 AM, Daniel Joseph <dan.b.joseph at gmail.com> wrote:
> Hi Ray,
> When editing and zooming in that area, the Bing imagery at the higher zoom
> level is switching to a different acquisition date/time and the imagery for
> higher zoom levels has cloud cover (the gray obscuring the screen). If you
> pan NE to around 12.34869/-9.10189 you'll start to get out of it. I don't
> have any suggestion on how to work around this for the obscured area (but
> maybe someone else does). Sometimes other imagery will work (i.e. Mapbox
> Satellite) but that doesn't seem to be the case here.
> -Dan
>
> On Wed, Nov 19, 2014 at 2:18 PM, Ray Kiddy <ray at ganymede.org> wrote:
>>
>>
>> Hello -
>>
>> I am trying to do some edits on task # 765. Here I am at the
>> bottom-left of my grid.
>>
>> http://www.openstreetmap.org/edit?editor=id&#map=17/12.34481/-9.10106
>>
>> This all looks cleat to me, but it is a bit small. But when I
>> double-click in one more time, to:
>>
>> http://www.openstreetmap.org/edit?editor=id&#map=18/12.34492/-9.10084
>>
>> then I can briefly see the imagery but then, within a second, it fades
>> to a uniform gray. What is up? The imagery at the higher-resolution
>> obviously exists, because I catch just a glimpse of it, But that is
>> really not enough time to identify anything. I am going to unlock and
>> try again later. Any suggestions?
>>
>> thanx - ray
>>
>> BTW, I am using the iD editor with Firefox 33.0 on Ubuntu 14.04 LTS.
>>
>> _______________________________________________
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>> HOT at openstreetmap.org
>> https://lists.openstreetmap.org/listinfo/hot

>
>
>
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