|
|
| GeoCommunity Mailing List |
| |
| Mailing List Archives |
| Subject: | Re: [gislist] DRG Viewer |
| Date: |
03/03/2004 09:10:01 AM |
| From: |
John D. Evans |
|
|
Hello Mike,
For a different approach, the following URLs will get you seamless,
multi-resolution DRG coverage for the entire conterminous US, via an
early version of OGC's Web Map Service (WMS v0.9):
http://ortho.ftw.nrcs.usda.gov/drg2.html
http://ortho.ftw.nrcs.usda.gov/drg4.html
(This is from an experiment at the Agriculture Dept. (USDA) data
warehouse, to which I contributed the original open source software
(http://tull.mit.edu/orthoserver).)
Unfortunately, the GUI client there is a bit rudimentary: it uses some
funky HTML that only works right in Internet Explorer. So, use IE
(cringe :-) to test it. But it's open source software, written in Perl:
you might use it as a starting point. Better yet, because of the open
WMS interface, you could use a variety of other WMS clients to connect
to this server, including some open source options. Let me know if I can
point you to useful resources -- or perhaps nudge the USDA people
towards a full WMS v1.0 or v1.3 (the current version).
--
John D. Evans, Ph.D. <john.evans@gsfc.nasa.gov>
GST, Inc. / NASA Geospatial Interoperability Office (GIO)
1-301-286-0803 / 1-240-542-1133
Mike Flannigan wrote:
>I need a DRG (topographic map) viewer that can accept
>positioning scripts, as opposed to mouse click positioning.
>What I mean is, I want to be able to open a DRG and zoom
>in to a given spot by passing the lat/long coordinates and a
>zoom level, all by keyboard commands - no mouse
>movement or clicking needed.
>
>The following free program can do all this with mouse clicks,
>but apparently not by keyboard commands:
>http://mcmcweb.er.usgs.gov/drc/dlgv32pro/
>Here is the same thing in Unix:
>http://www.cs.arizona.edu/icon/oddsends/dlgvu/
>
>I'm on Windows right now, but plan to migrate to
>Linux in the near future. If I purchase a solution, I want
>to pay less than $100.
>
>I'm thinking about writing my own viewer. I'm pretty
>proficient at Perl, and might do some research and write
>my own program. If anybody has any suggestions along
>these lines, I'd like to hear about it.
>
>To give you an idea of how little I know about this, I
>understand DRG's are tiff files with some underlying,
>embedded spatial data that allows viewer programs like
>these to show the lat/long and UTM position data for the
>mouse pointer position. I thought I had a file describing
>this, but I can't locate it now. So I'm heading to the web
>for research.
>
>Mike Flannigan
>
>
_______________________________________________
gislist mailing list
gislist@lists.geocomm.com
http://lists.geocomm.com/mailman/listinfo/gislist
_________________________________
This list is brought to you by
The GeoCommunity
http://www.geocomm.com/
Get Access to the latest GIS & Geospatial Industry RFPs and bids
http://www.geobids.com
|
|
Sponsored by:
For information
regarding
advertising rates
Click Here!
|
