[talk-ph] Variable zoom level visibility

[Ed Garcia]

Thanks Eugene and Michael for your replies,

I understand about staying away from manipulating the zoom properties.  I
agree.

Eugene, you got my point exactly on what I wish the renderers will do about
low density POIs in an area.  You say they can do this anyway for AOIs, I
hope they will adapt the same algorithm for POIs soon.   Meanwhile, I will
look at look into this landuse=commercial approach.

Only problem I see with landuse=commercial is, one has to know the extents
of the area and add them properly on OSM.  Question ... can I just use a
very small circle polygon to represent a "point" then tag it as building=yes
or something?  I saw this done for Boracay's Boat Stations ...
http://www.openstreetmap.org/?lat=11.959316&lon=121.925667&zoom=18&layers=B000FTF

Thanks again



On Fri, Jul 24, 2009 at 7:23 AM, Eugene Alvin Villar <seav80 at gmail.com>wrote:

> Hi Ed,
>
> It is usually not appropriate to add tags or to adjust the data to fix
> rendering problems. This is the problem of the renderer tool itself and not
> of the data. In this case, the renderer should be able to recognize that
> there are only two POIs in an area and so should show them in lower zoom
> levels. But as far as I know, no renderer (Mapnik, Osmarender, etc.) is
> sophisticated enough yet for this.
>
> One possible thing you can do data-wise is to tag the resort as a
> landuse=commercial area (AOI?) even approximately instead of just as a POI.
> The current renderers are able to show areas and even display the name if
> the area is big enough.
>
> Regards,
> Eugene
>
>
> On Thu, Jul 23, 2009 at 10:27 AM, Ed Garcia <eppgarcia at gmail.com> wrote:
>
>> Hello Guys,
>>
>> Is there a way, or is there a tag or property that I can use so that
>> certain POIs (usually Resorts in my case siempre) can appear at lower zoom
>> levels instead of just zoom = 17?  There are cases kasi na there are only
>> one or two resorts in a long stretch of beach.  When zoomed out (to
>> appreciate the vicinity), the resort would not appear.  and then when zoomed
>> in to see the resort, the vicinity can no longer be appreciated.
>>
>> here is an example ...
>>
>> http://www.openstreetmap.org/?lat=13.8598&lon=121.509&zoom=14&layers=B000FTF
>> Try zooming in to zoom=17 where the resorts will start to appear.  By then
>> the "vicinity orientation" is lost.
>>
>> Is there a tag or property that can dictate zoom level visibility of the
>> POI?  This is usually the case in provincial areas where POIs are way far
>> apart.
>>
>> thanks!,
>> ed
>>
>>
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>> - reeflife.eppgarcia.com
>>
>> PADI Divemaster #491048
>>
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>
>
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>



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website administrator:
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