-------- Original Message --------
Subject: Re: Fw: DOQQ's
Date: Thu, 6 Dec 2007 19:46:47 -0800
From: Matt Fox <[log in to unmask]>
To: Maps, Air Photo & Geospatial Systems Forum <[log in to unmask]>
By the way, here is a nice little addon for Google Earth that will
overlays all of the DOQs from USGS onto Google Earth. As a bonus, you
also get their DRG layer.
http://www.gelib.fox-fam.com/wp-content/uploads/2007/04/doqdrg.kml
Matt
On Dec 6, 2007 6:36 AM, Maps-L <[log in to unmask]> wrote:
> forwarded usgs ...
> -------- Original Message --------
> Subject: Fw: DOQQ's
> Date: Wed, 5 Dec 2007 17:42:39 -0500
> From: John C Fouke <[log in to unmask]>
> To: maps-l
>
>
>
> I received an interesting inquiry recently that asked "Is there any place
> in the US (lower 48 and Hawaii) that does not have 1:12,000 scale DOQQ's
> available?". Below is the answer that Steve Reiter at the USGS Denver
> SILS put together:
>
>
> Greetings: I just spoke with Dan Daniels - he's our Orthoimagery
> Manager. Dan said all of the lower 48 states should be available as DOQ
> quarter-quads. There may some locations that are blacked out or reduced
> in resolution due to security concerns. The USGS seamless website offers
> up this imagery for free download (see the attached word document
> "Seamless.doc"). For unknown reasons, there's been a gap in coverage in
> the northwestern part of Maine, but Dan says this area will soon be
> downloadable as well.
>
> I checked the USGS EarthExplorer website (
> http://edcsns17.cr.usgs.gov/EarthExplorer/) for DOQ coverage of Hawaii &
> Alaska. This website serves as our sales database, so it should be an
> accurate reflection of available coverage. Unfortunately, the results
> are reported as text, not as a pictorial image. There are 271
> quarter-quads available for Hawaii. There are 581 quarter-quads available
> for Alaska. I believe there are gaps in the Hawaii coverage and I'm
> certain there are gaps in Alaska coverage.
>
> John Fouke
>
> text instead of attachment:
>
>
>
>
> *http://seamless.usgs.gov*
>
> The USGS seamless website offers free digital data suitable for import
> into a Geographic Information System (GIS). If you don't have a
> reasonably fast Internet connection, you'll probably find this to be a
> frustrating experience. If you are using Windows XP and have Service
> Pack 2 installed, you'll want to look at the first
> Frequently-Asked-Question from the dropdown menu – it details how to
> configure Windows XP so downloads from the seamless website are
> permitted. It's a good idea to read all of the FAQs before proceeding.
>
> You may download United States data as well as world data – choose the
> appropriate panel. A new screen appears with tools on the left, a map
> interface in the center, and layer information on the right. By default,
> the zoom-in tool is active, so with each click, you'll see more detail
> and features like roads, political boundaries, and place names will
> begin to appear. By default, the "layer" tab is active on the right. You
> may turn layers on & off under the layer tab to help you identify your
> area-of-interest (AOI); notice each layer can be expanded & contracted
> by clicking on the arrow.
>
> Once zoomed to a sufficient resolution that displays your AOI, click the
> "download" tab on the right. By default, the 1-second NED layer is
> checked, meaning that's the layer you wish to download. If appropriate,
> uncheck that layer & choose another. Note you may check several layers
> for download. Data availability is not uniform: some areas will have
> layers that are not available at other geographic locations and vice-versa.
>
> Once the appropriate layer(s) is selected, you need to define a download
> area. On the left, the "Downloads" grouping of tools offers several
> options. For most users, the "Define Download Area" and the "Define Area
> by Coordinates" tool is appropriate; the first allows you to drag a box
> – a green box is permissible, a red box exceeds the file size capacity.
>
> From here, the process is straightforward. Data will be served up as
> zipped files for transfer. Some data is available in several different
> formats; to change the default format, click "Modify Data Request" on
> the SDDS Request Summary Page. If you request a large block of data,
> layers may be parsed into a number of smaller files to download.
>
> Some users have expressed a preference for the Internet browser
>
> "Mozilla Firefox" when using the Seamless website. The browser is
> available here:
>
> http://www.mozilla.com/en-US/firefox/
>
> This is provided for informational purposes only and does not constitute
> endorsement by the US Geological Survey.
>
>
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