-------- Original Message --------
Subject: RE: Electronic map data and GPS: Mohave Desert]
Date: Thu, 3 Feb 2005 13:51:22 -0800
From: Wendie Helms <[log in to unmask]>
To: 'Maps and Air Photo Systems Forum' <[log in to unmask]>
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Ken,
My library owns cd-roms from the Mojave Desert Ecosystem Program. I believe
you can obtain the same data from this website: http://www.mojavedata.gov/.
There is raster and vector data for roads, elevation, etc. I am not sure if
the data will be at the detail or in the format your patron needs.
Wendie Helms
Map Curator, Map Collection, Science Library
University of California, Riverside
(951)827-6423
[log in to unmask]
-----Original Message-----
From: Maps and Air Photo Systems Forum [mailto:[log in to unmask]] On
Behalf Of Johnnie D. Sutherland
Sent: Thursday, February 03, 2005 12:35 PM
To: [log in to unmask]
Subject: Electronic map data and GPS: Mohave Desert]
-------- Original Message --------
Subject: Electronic map data and GPS: Mohave Desert
Date: Thu, 3 Feb 2005 08:25:20 -0700
From: Ken Rockwell <[log in to unmask]>
To: Maps and Air Photo Systems Forum <[log in to unmask]>
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A student e-mailed this reference question to me. It's an area with
which I've had no experience, so I wonder if others out there can advise
us on resources that may help. Thanks in advance,
Ken Rockwell
Univ. of Utah
I wanted to ask you about finding electronic map data needed for my
senior project in computer science. To give you a bit of background, I'm
working with three other people in a group project involved with a local
company that's trying to enter the DARPA sponsored Grand Challenge event
this October. The event is an autonomous vehicle race (meaning there's
no direct human control over the vehicle) from Barstow, CA to Primm, NV.
Our project is to take signal input from a GPS module and correct for
possible errors in the latitude/longitude based on map data. By that I
mean that the vehicle is following only roads and the GPS signal may
indicate that it's some 10 meters (say) off the road. Our software has
to "filter" the signals by finding the closest road in a straight line
based on map data, give new latitude/longitude coordinates correcting
for the nearest road, then recombine that with the rest of the GPS
signal (which gives current time, altitude, etc.) to be used by the
vehicle's navigation system.
I'm not sure about sources of electronic map data for the area
in question: that is what format they're available in (vector or
raster), how up-to-date, and what resolution or level of detail they
have. I'm looking for either free or commercial sources of
maps--basically I just need to know what's available and where to get
it.
I'm trying to locate helper software to "read" the map given numeric
latitude/longitude coordinates. I know there are a lot of companies
selling such software--basically the program I'm trying to write
presumably recreates what any high-end GPS receiver would already do for
you. The issue is the helper software I find has to be able to
understand the map data given to it. Do you happen to know of any
resources for finding such information?
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