|
*Title: |
DRG (Digital Raster Graphics) of California |
| *Responsible
party: |
U.S. Geological Survey, GeoData Digital Raster Graphics |
| *Scope
and purpose: |
A
digital raster graphic (DRG) is a scanned image of a U.S. Geological
Survey (USGS) standard series topographic map, including all map collar
information. This particular dataset is composed of scans of the most
current edition (as of date of scanning) of 1:24,000-scale topographic
maps of California; the sheets were scanned by the Teale Data Center.
The image inside the map neatline is georeferenced to the surface
of the Earth and fitted to the Universal Transverse Mercator projection.
The horizontal positional accuracy and datum of the DRG matches the
accuracy and datum of the source map. The map is scanned at a min
resolution of 250 dots per inch. |
| Content
type: |
Scanned
topographic sheets |
| Relationship
to other collections: |
Some
of the sheets also have metadata as part of the Geodex metadataset,
since the latter includes records for the paper topographic sheets
(up to about 1994) issued by the U.S. Geological Survey. |
| Update
frequency: |
none
|
| Are
there any internet acccessible web
pages that describe this collection?
Are there other web sites that would be
helpful in understanding this collection? |
http://collections.alexandria.ucsb.edu/drg_24k_ca/metadata.html
|
| Is
the collection in a database? |
no
|
| If
not, describe file organization/structure: |
files
are located in restricted directory on unix server |
*Where
is collection located?
Is it accessible via the web? |
http://collections.alexandria.ucsb.edu/drg_24k_ca/distribution_forms/original_data/
|
| Overall
record count: |
2851
|
Are
data access tools
required/recommended?
If so, please describe: |
MrSid
useful, not required |
| *Terms
conditions: |
Copyright
1999 - 2002 by the Regents of the University of California. All rights
reserved. The ADL Catalog is open to all University of California
campuses. Items within the ADL Catalog carry their own statements
about access and use constraints when restrictions apply. |
| Access
constraints: |
None |
| Use
constraints: |
Uncopyrighted |
| Legal
disclaimer: |
The
Regents of the University of California disclaim any applicable implied
warranties, including, but not limited to, the implied warranties
of merchantability and fitness for a particular purpose. In addition,
no warranty whatsoever accompanies the data available herein, and
it is provided on an \'as is\' basis. The Regents of the University
of California shall not be liable for any direct, indirect, special,
incidental, or consequential damages arising out of the use of these
data or from making these data available, even if it has been informed
of the possibility of such damages. |
| *Access
Information Contact: |
Mary
Larsgaard, Map and Imagery Laboratory, Davidson Library, University
of California at Santa Barbara, mary@library.ucsb.edu |
|
