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Product Description
Large-Scale
(7.5-minute) DLGs correspond to
the USGS 1:20,000-, 1:24,000-, and 1:25,000-scale topographic
quadrangle maps.
Digital Line Graphs (DLGs)
are digital vector representations of cartographic information
derived from USGS maps and related sources.
Only
Selective coverage of the Large-Scale (7.5-minute) DLGs are
available.
The
following layers (or categories of feature type) may be available:
User requiring the more complete DLG
sets may want to check-out our
ChartTiff ContoursPlus.
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Layer |
Feature Type |
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Public Land Survey System (PLSS) |
Township, range,
and section lines |
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Boundaries |
State, county,
city, and other national and State lands such as forests and
parks |
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Transportation |
Roads and trails,
railroads, pipelines and transmission lines |
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Hydrography |
Flowing water,
standing water, and wetlands |
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Hypsography |
Contours and
supplementary spot elevations |
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Non-vegetative features |
Glacial moraine,
lava, sand, and gravel |
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Survey control and markers |
Horizontal and
vertical monuments (third order or better) |
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Manmade features |
Cultural features,
such as building, not collected in other data categories |
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Vegetative surface cover |
Woods, scrub,
orchards, and vineyards |
ChartTiff allows for the projection of the
USGS
DLG in UTM - (Universal Transverse Mercator), State Plane, or
Latitude / Longitude. They can be referenced to either
the North American Datum (NAD) of 1927 (NAD27) or 1983
(NAD83). or WGS72 or WGS84.
ChartTiff allows for ESRI Shape or AutoCAD
DXF output file formats.
ChartTiff DLGs are NOT included in the 1
Free Download Offer.
See Samples page to download
sample DLGs
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DLGs Sold by Full Degrees
- Includes all DLG overlays
available for the degree.
- As low as
per overlay.
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Available In:
ESRI Shape or
AutoCAD DXF output file formats.
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Available
Projections
UTM - User Selectable Zones - NAD27 / NAD83 / WGS72 /
WGS84
State Plane - User Selectable Zones - NAD27 / NAD83
Latitude / Longitude - NAD27 / NAD83 / WGS72 / WGS84
- Lambert, Albers and other
projections available. Request
Quote.
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Available by Internet Download.
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ContoursPlus
Individual Quads
- Contours generated
from the National Elevation Dataset
Click for Details
- Overlays
Based on Availability
1) Uses the Large 1:24,000 Scale Overlays first if available.
2) Quads generated from the
Intermediate 1:100,000 Scale Overlays are then used.
3) Some overlays regardless of
scale may not be available from the USGS.
In this case some overlays may not be provided.
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- Available in ESRI Shapefiles
and AutoCAD DXF
Includes all attributes.
Note: 24 hour turnaround for
Internet downloads
on Contours and Overlays
- Available
Projections
(selected during check-out)
UTM - User Selectable Zones - NAD27 / NAD83 / WGS72 /
WGS84 State Plane - User Selectable Zones - NAD27 / NAD83 Latitude / Longitude - NAD27 / NAD83 / WGS72 / WGS84
- Contour Units (selected
during check-out))
Select 5,
10, 20, 25, 30, 40, 50, 60, 80, 90, 100 Feet / Meters
- ContoursPlus are
NOT
Available in 1 Free Download
Offer
- Available via Internet Download
or USB Flash / External Drive
Order
Individual ContoursPlus Quads
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For additional
information -- Please Phone:
1 (303) 774-8769
or Complete
Form:
Contact ChartTiff
© Copyright
2013--
Image Peak
Systems Corporation -- All Rights Reserved. |