[Talk-us] High resolution off-leaf imagery of Virginia (VBMP)
josh at joshdoe.com
Tue Mar 1 13:55:38 GMT 2011
What I meant by that is to add support to those caching servers for
the ArcGIS REST tile interface, so that they can get and reproject the
tiles suitable for TMS. I understand TileStache can work with the
export interface of ArcGIS REST and offer TMS, however it fails to
work on the VGIN servers since they don't support reprojection from
the state plane SRS.
On Tue, Mar 1, 2011 at 8:49 AM, Ian Dees <ian.dees at gmail.com> wrote:
> I don't understand what you mean by "plain old TMS or WMS".
> TileStache/TileCache do offer TMS (and TileCache does WMS).
> On Tue, Mar 1, 2011 at 7:46 AM, Josh Doe <josh at joshdoe.com> wrote:
>> True, it is straightforward to get the tiles, and the specification is
>> open . The trouble lies with reprojecting the tiles, or informing
>> the editor of the projection. Easiest way may be to write an extension
>> to MapProxy/TileCache/etc so we can just use plain old TMS or WMS.
>> Hopefully VGIN will directly offer this kind of service at some point.
>> : http://resources.esri.com/help/9.3/arcgisserver/apis/rest/index.html
>> On Tue, Mar 1, 2011 at 8:40 AM, McGuire, Matthew
>> <Matt.McGuire at metc.state.mn.us> wrote:
>> > It is just jpegs over http.
>> > -----Original Message-----
>> > From: David Fawcett [mailto:david.fawcett at gmail.com]
>> > Sent: Monday, February 28, 2011 1:20 PM
>> > To: Josh Doe
>> > Cc: OSM US Talk List
>> > Subject: Re: [Talk-us] High resolution off-leaf imagery of Virginia
>> > (VBMP)
>> > You have to love open, public domain data only published in
>> > proprietary formats...
>> > On Mon, Feb 28, 2011 at 11:18 AM, Josh Doe <josh at joshdoe.com> wrote:
>> >> I'm not sure how many are aware of this, but the Commonwealth of
>> >> Virginia regularly acquires high resolution orthoimagery, through the
>> >> Virginia Base Mapping Program, administered by the Virginia
>> >> Information Technologies Agency (VITA). Some of this data is in the
>> >> public domain. Specifically, the flights from 2002 and from 2006/2007
>> >> are available online , and Google even uses some of this imagery
>> >> for certain parts of Virginia (though not in my area). The imagery
>> >> from 2006/2007 varies in resolution from 6 inches to 1 foot.
>> >> Unfortunately this data is only available via an ArcGIS Server, using
>> >> their REST interface. I made an attempt to write a plugin to support
>> >> that interface in JOSM but was unsuccessful, however through some
>> >> trickery I was able to create a local OSM-style tile cache of my small
>> >> area of interest, and have found it very useful due to the high
>> >> resolution and especially because I can see right through the trees,
>> >> since it's off-leaf.
>> >> It's expected that later this year VBMP imagery from 2009 is to be
>> >> released into the public domain. This imagery varies in resolution
>> >> between 3 inches and 1 foot. VITA is testing a WMS server, but there
>> >> are no guarantees it will become available.
>> >> If anyone is interested in adapting JOSM and/or Potlatch2 to support
>> >> the ArcGIS REST tile interface, please let me, as I'd be interested in
>> >> collaborating.
>> >> It would be fantastic for Virginia OSMers to have access to this data,
>> >> especially when the 2009 imagery becomes available!
>> >> Regards,
>> >> -Josh
>> >> :
>> >> http://wiki.openstreetmap.org/wiki/Virginia#Virginia_Base_Mapping_Program_.28VBMP.29_Orthoimagery
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