The Cartographic Feature File (CFF) Vintage 11 data
is an electronic version of the U.S. Forest Service primary
base series (PBS) maps which are developed from the U.S.
Geological Survey (USGS) 7.5 minute topographic map series
with enhancements and revisions to satisfy Forest Service
needs and are constructed to meet National Map Accuracy
Standards (NMAS). This data includes all the features
except the contour lines. The West Virginia GIS Technical Center has converted the CFFs to ArcInfo interchange format (.e00).
The CFF Vintage 11 data were intended for updating the
primary base series and for generating secondary base
series maps. They provide basic planimetric map features
from a single standard source to which resource data can be
registered and to provide CFF data to USGS for inclusion in
the National Digital Cartographic Database.
None
Only to be used at 1:24000 scale or smaller
All attributes entered during the creation process were
verified by displaying the lines in both the database and
spatial coverage.
These data are believed to be logically consistent, though
no tests were performed. Line geometry is topologically clean.
CFF specifications are provided in Forest Service
Engineering Manual (EM) 7140-21. You can also visit the
GSTC web site at www.fs.fed.us/gstc for more information.
The horizontal positional accuracy of the CFF reflects the
nature of the source PBS map. PBS maps are compiled to meet
National Map Accuracy Standards (NMAS). For the horizontal
component, the NMAS states that 90 percent of well-defined
points on a map fall within a specified distance of the
actual position on the ground -- 1/50th of an inch at map
scale for 1:24000- and 1:63360-scale. CFFs are estimated to
contain a horizontal positional accuracy of less than or
equal to 0.005 inches in one direction relative to the
source graphic. The source graphic is used to assess
digital positional accuracy.
Source stable-base mylar data from which Vingage 11 CFF was generated.
Source stable-base mylar data from which Vingage 11 CFF was generated.
CFFs are collected by digitizing map features shown on
Primary Base Series (PBS) maps. Line and Point features are
described by X-Y coordinate pairs and attribued using a
Feature Code scheme. CFFs are formatted according to the
U.S. Geological Survey (USGS) quadrangle convention.
Software computed
Software computed
Software computed
User Defined
features, Delete - all features that were previously
contained on the CFF/PBS/SEQ map that should be deleted,
and old alignments for realigned features, Change - feature
code changes for existing features.
survey grade and sub-meter, Resurvey plat, photogrammetric
compilation, digitized PBS/SEQ, digitized from an Ortho
quad, Automate Lands Project, digitized other, geographic
coordinate data base (GCDB) data, other cadastral
information, other agency digital, other/unknown.
Meter Receiver 2-D, GPS Survey Grade and Sub-meter,
05-Resurvey Plat, 06-Photogrammetric Compilation,
07-Digitized PBS/SEQ, 08-Digitized from an Ortho quad,
09-ALP, 20-Digitized other, 21-GCDB data, 22-Other
cadastral info, 23-Other Agency digital, 24-Other/Unknown
Geospatial Service and Technology Center (GSTC)Vintage 11
cartographic feature file (cff) data set.
The U.S. Forest Data Distribution Liability Statement
The U.S. Forest Service shall not be held liable for
improper or incorrect use of the data described and/or
contained herein. These data and related graphics are not
legal documents and are not intended to be used as such.
The contained in these data is dynamic and may
Change over time. The data are not better than the original
sources from which they were derived. It is the
responsibility of the data user to use the data
appropriately and consistent within the limitations of
geospatial data in general and these data in particular.
The related graphics are intended to aid the data user in
acquiring relevant data; it is not appropriate to use the
related graphics as data. The
U.S. Forest Service gives no warranty, expressed or
implied, as to the accuracy, reliability, or completeness
of these data. Although these data have been processed
successfully on a computer system at the U.S. Forest
Service, no warranty expressed or implied is made regarding
the utility of the data on another system or for general or
scientific purposes, nor shall the act of distribution
constitute any such warranty. This disclaimer applies both
to individual use of the data and aggregate use with other data.
Compatible with ArcInfo Version 7.X.
None.