Re: [OSM-talk] zoom yahoo data in potlatch?

2008-05-03 Thread bvh
On Fri, May 02, 2008 at 10:40:42PM -0400, Christopher Schmidt wrote:
   in options, choose 'Aerial - OpenAerialMap' as background and you'll be 
   fine
  
  hmm, i'm slightly baffled by that. the oam coverage for nz is
  appalling at best and as an aside, i'd be very surprised if it was
  better resolution than the yahoo imagery anywhere on the planet
 
 In the majority of the world, OAM and Yahoo! imagery are the same --
 both based on Landsat. The difference, in those areas, is that OAM will
 display tiles far above 1:1 ratio, as opposed to just giving a 'no
 data' message.
 
 Additionally, I highly doubt you will see anything higher resolution
 than
 http://openaerialmap.org/map/?lat=37.79202lon=-122.32715zoom=21layers=BF
 in Yahoo! anywhere on the planet.

I am not local, but the openstreetmap.org data at the north side of the
canal does not seem to match what is on the imagery? More specifically
the raster of streets seems out of place.

cu bart

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Re: [OSM-talk] zoom yahoo data in potlatch?

2008-05-03 Thread Richard Fairhurst
Christopher Schmidt wrote:

 Richard is likely limited by the Yahoo! Flash API: I expect that  
 there's
 a fair chance that Yahoo! hasn't updated their Flash API to provide  
 the
 new zoom levels that the main API added 2-3 weeks ago (Yahoo added  
 more
 zoom levels worldwide at that time).

 (Of course, Richard will tell me if I'm wrong, I'm sure :))

It sounds likely, though I'll look into it. David - could you give a  
lat/long for the area?

Potlatch's approach is to faithfully use the Yahoo API, to stay on  
the right side of the legal agreement. The only tweaking it does is  
that it tries to automatically hide the Yahoo layer if all the tiles  
are blank, because presenting a first-time mapper with a load of  
tiles saying Sorry, there is no data for this area is pretty  
confusing. That does therefore, I'm afraid, preclude zooming in  
beyond what Yahoo offers, but the screen magnifier suggestion is a  
good one.

cheers
Richard

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Re: [OSM-talk] zoom yahoo data in potlatch?

2008-05-03 Thread Shaun McDonald

On 3 May 2008, at 03:40, Christopher Schmidt wrote:

 On Sat, May 03, 2008 at 12:51:43PM +1200, Robin Paulson wrote:

 In the majority of the world, OAM and Yahoo! imagery are the same --
 both based on Landsat. The difference, in those areas, is that OAM  
 will
 display tiles far above 1:1 ratio, as opposed to just giving a 'no
 data' message.


Sure does.

 Additionally, I highly doubt you will see anything higher resolution
 than
 http://openaerialmap.org/map/?lat=37.79202lon=-122.32715zoom=21layers=BF
 in Yahoo! anywhere on the planet.


Um looks rather blocky where I am. I'm yet to see OAM that is of  
decent quality where I am.
http://openaerialmap.org/map/?lat=51.40772lon=-0.06197zoom=17layers=BF

Shaun


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Re: [OSM-talk] zoom yahoo data in potlatch?

2008-05-03 Thread Christopher Schmidt
On Sat, May 03, 2008 at 09:30:39AM +0200, bvh wrote:
 On Fri, May 02, 2008 at 10:40:42PM -0400, Christopher Schmidt wrote:
in options, choose 'Aerial - OpenAerialMap' as background and you'll be 
fine
   
   hmm, i'm slightly baffled by that. the oam coverage for nz is
   appalling at best and as an aside, i'd be very surprised if it was
   better resolution than the yahoo imagery anywhere on the planet
  
  In the majority of the world, OAM and Yahoo! imagery are the same --
  both based on Landsat. The difference, in those areas, is that OAM will
  display tiles far above 1:1 ratio, as opposed to just giving a 'no
  data' message.
  
  Additionally, I highly doubt you will see anything higher resolution
  than
  http://openaerialmap.org/map/?lat=37.79202lon=-122.32715zoom=21layers=BF
  in Yahoo! anywhere on the planet.
 
 I am not local, but the openstreetmap.org data at the north side of the
 canal does not seem to match what is on the imagery? More specifically
 the raster of streets seems out of place.

The OSM data in OAM is 6 months out of date, if that's what you're
referring to... It's probably already fixed in OSM.  

Regards,
-- 
Christopher Schmidt
MetaCarta

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Re: [OSM-talk] zoom yahoo data in potlatch?

2008-05-03 Thread bvh
On Sat, May 03, 2008 at 08:03:16AM -0400, Christopher Schmidt wrote:
  I am not local, but the openstreetmap.org data at the north side of the
  canal does not seem to match what is on the imagery? More specifically
  the raster of streets seems out of place.
 The OSM data in OAM is 6 months out of date, if that's what you're
 referring to... It's probably already fixed in OSM.  

I checked in merkaartor so that I could easily compare yahoo
and OAM imagery for that area and it was there that I noticed the
strange looking roads. So it was certainly not fixed this morning.

cu bart

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Re: [OSM-talk] zoom yahoo data in potlatch?

2008-05-03 Thread Karl Newman
On Sat, May 3, 2008 at 7:38 AM, bvh [EMAIL PROTECTED] wrote:

 On Sat, May 03, 2008 at 08:03:16AM -0400, Christopher Schmidt wrote:
   I am not local, but the openstreetmap.org data at the north side of
 the
   canal does not seem to match what is on the imagery? More specifically
   the raster of streets seems out of place.
  The OSM data in OAM is 6 months out of date, if that's what you're
  referring to... It's probably already fixed in OSM.

 I checked in merkaartor so that I could easily compare yahoo
 and OAM imagery for that area and it was there that I noticed the
 strange looking roads. So it was certainly not fixed this morning.

 cu bart


Then probably those are original roads from the TIGER import, which has
known accuracy issues. Someone will need to fix those up. And now that it's
been brought to the attention of the list, I'd bet that gets done shortly.

Karl
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Re: [OSM-talk] zoom yahoo data in potlatch?

2008-05-02 Thread micha ruh
in options, choose 'Aerial - OpenAerialMap' as background and you'll be fine

regards
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Re: [OSM-talk] zoom yahoo data in potlatch?

2008-05-02 Thread Robin Paulson
2008/5/3 micha ruh [EMAIL PROTECTED]:
 in options, choose 'Aerial - OpenAerialMap' as background and you'll be fine

hmm, i'm slightly baffled by that. the oam coverage for nz is
appalling at best and as an aside, i'd be very surprised if it was
better resolution than the yahoo imagery anywhere on the planet

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Re: [OSM-talk] zoom yahoo data in potlatch?

2008-05-02 Thread Andrew MacKinnon
On Fri, May 2, 2008 at 8:51 PM, Robin Paulson [EMAIL PROTECTED] wrote:
 2008/5/3 micha ruh [EMAIL PROTECTED]:
 in options, choose 'Aerial - OpenAerialMap' as background and you'll be fine

 hmm, i'm slightly baffled by that. the oam coverage for nz is
 appalling at best and as an aside, i'd be very surprised if it was
 better resolution than the yahoo imagery anywhere on the planet

You'd be better off using a screen magnifier application to zoom the
entire screen. On Windows, Mac and some distributions of Linux they
are built in. On Windows, use the built-in screen magnifier in
Programs  Accessories  Accessibility  Magnifier (instructions:
http://www.microsoft.com/windowsxp/using/accessibility/magnifierturnon.mspx)
On Mac, simply use Ctrl-scroll wheel up to zoom in (you might have to
enable a preference under the Trackpad tab of Keyboard  Mouse
Preferences to enable it). In Linux, use Orca in GNOME or
KMagnifier in KDE (your distribution probably has a way to enable
this through Accessibility Preferences). I have a Mac, and I do this
all the time to make tracing Yahoo imagery more accurate.

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Re: [OSM-talk] zoom yahoo data in potlatch?

2008-05-02 Thread Christopher Schmidt
On Sat, May 03, 2008 at 12:51:43PM +1200, Robin Paulson wrote:
 2008/5/3 micha ruh [EMAIL PROTECTED]:
  in options, choose 'Aerial - OpenAerialMap' as background and you'll be fine
 
 hmm, i'm slightly baffled by that. the oam coverage for nz is
 appalling at best and as an aside, i'd be very surprised if it was
 better resolution than the yahoo imagery anywhere on the planet

In the majority of the world, OAM and Yahoo! imagery are the same --
both based on Landsat. The difference, in those areas, is that OAM will
display tiles far above 1:1 ratio, as opposed to just giving a 'no
data' message.

Additionally, I highly doubt you will see anything higher resolution
than
http://openaerialmap.org/map/?lat=37.79202lon=-122.32715zoom=21layers=BF
in Yahoo! anywhere on the planet.

Regards,
-- 
Christopher Schmidt
MetaCarta

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Re: [OSM-talk] zoom yahoo data in potlatch?

2008-05-02 Thread David Muir Sharnoff
You're right: that OAM imagery is very detailed.   Unfortunately, it's not that
good where I'm mapping.   In Oakland, California, Yahoo! has two zoom
levels beyond what Potlatch will display.   It would be very helpful to me if
Potlatch would display those zoom levels.   Google has one (or two) more
beyond Yahoo!

Richard, can you add the please?

-Dave

On Fri, May 2, 2008 at 7:40 PM, Christopher Schmidt
[EMAIL PROTECTED] wrote:
 On Sat, May 03, 2008 at 12:51:43PM +1200, Robin Paulson wrote:
   2008/5/3 micha ruh [EMAIL PROTECTED]:
in options, choose 'Aerial - OpenAerialMap' as background and you'll be 
 fine
  
   hmm, i'm slightly baffled by that. the oam coverage for nz is
   appalling at best and as an aside, i'd be very surprised if it was
   better resolution than the yahoo imagery anywhere on the planet

  In the majority of the world, OAM and Yahoo! imagery are the same --
  both based on Landsat. The difference, in those areas, is that OAM will
  display tiles far above 1:1 ratio, as opposed to just giving a 'no
  data' message.

  Additionally, I highly doubt you will see anything higher resolution
  than
  http://openaerialmap.org/map/?lat=37.79202lon=-122.32715zoom=21layers=BF
  in Yahoo! anywhere on the planet.

  Regards,
  --
  Christopher Schmidt
  MetaCarta



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Re: [OSM-talk] zoom yahoo data in potlatch?

2008-05-02 Thread Karl Newman
On Fri, May 2, 2008 at 8:19 PM, David Muir Sharnoff [EMAIL PROTECTED]
wrote:

 You're right: that OAM imagery is very detailed.   Unfortunately, it's not
 that
 good where I'm mapping.   In Oakland, California, Yahoo! has two zoom
 levels beyond what Potlatch will display.   It would be very helpful to me
 if
 Potlatch would display those zoom levels.   Google has one (or two) more
 beyond Yahoo!

 Richard, can you add the please?

 -Dave


Umm... Did you zoom out? That photo is in Alameda. Granted, outside the
boundaries of the Naval Air Station the resolution's not that great. But if
you want to map where to fly model airplanes, you're all set. :-)

Karl
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Re: [OSM-talk] zoom yahoo data in potlatch?

2008-05-02 Thread Christopher Schmidt
On Fri, May 02, 2008 at 08:19:52PM -0700, David Muir Sharnoff wrote:
 You're right: that OAM imagery is very detailed.   Unfortunately, it's
 not that good where I'm mapping.  

Sorry, my comments were tongue in cheek. I don't expect there to be many
cases where OAM is the best choice for mapping. 

 Richard, can you add the please?

Richard is likely limited by the Yahoo! Flash API: I expect that there's
a fair chance that Yahoo! hasn't updated their Flash API to provide the
new zoom levels that the main API added 2-3 weeks ago (Yahoo added more
zoom levels worldwide at that time).

(Of course, Richard will tell me if I'm wrong, I'm sure :)) 

Regards,
-- 
Christopher Schmidt
MetaCarta

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