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The Cartographic Automatic Mapping program (CAM) was developed for use in automated small-scale cartography. The map location and scale may be varied and any of 16 basic map projections employed. Besides drawing linear features su...
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The Cartographic Automatic Mapping program (CAM) was developed for use in automated small-scale cartography. The map location and scale may be varied and any of 16 basic map projections employed. Besides drawing linear features such as coastlines, CAM can generate grid lines, range rings, circles, ellipses, rectangles, azimuths, elevation rings, and symbols. The structure of the program is modular so that additional subroutines and data in different format can be easily added. CAM is written in Level H Fortran and designed to operate on IBM System 360 computers. Included is a data base of 8200 points describing world coastlines from data compiled by the Naval Weapons Laboratory at Dahlgren, Virginia. Documentation includes projection equations, diagrams and references.
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This report for the Terrain Visualization program was written to document significant program design elements. It reflects the successful achievement of the principal objective of the program - the implementation of sophisticated ...
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This report for the Terrain Visualization program was written to document significant program design elements. It reflects the successful achievement of the principal objective of the program - the implementation of sophisticated visualization capabilities using a low to medium performance computing platform. By requiring that this platform be the same as that used in the Digital Topographic Support System (DTSS), this program also advanced the potential use of terrain visualization technology in terrain analysis. Terrain Visualization, Terrain Analysis, Cartography, Digital Mapping.
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Digital flood-inundation maps for a 5-mile reach of the West Branch Delaware River through the Village and part of the Town of Delhi, New York, were created by the U.S. Geological Survey (USGS) in cooperation with the Village of D...
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Digital flood-inundation maps for a 5-mile reach of the West Branch Delaware River through the Village and part of the Town of Delhi, New York, were created by the U.S. Geological Survey (USGS) in cooperation with the Village of Delhi, the Delaware County Soil and Water Conservation District, and the Delaware County Planning Department. The inundation maps, which can be accessed through the USGS Flood Inundation Mapping Science Web site and the Federal Flood Inundation Mapper Web site, depict estimates of the areal extent and depth of flooding corresponding to selected water levels (stages) referenced to the USGS streamgage at West Branch Delaware River upstream from Delhi, N.Y. (station number 01421900). In this study, flood profiles were computed for the stream reach by means of a one-dimensional step-backwater model that had been used to produce the flood insurance rate maps for the most recent flood insurance study for the Town and Village of Delhi. This hydraulic model was used to compute 10 water-surface profiles for flood stages at 1-foot (ft) intervals referenced to the streamgage datum and ranging from 7 ft or near bankfull to 16 ft, which exceeds the stages that correspond to both the estimated 0.2-percent annual-exceedance-probability flood (500-year recurrence interval flood) and the maximum recorded peak flow. The simulated water-surface profiles were then combined with a geographic information system (GIS) digital elevation model, which was derived from Light Detection and Ranging (LiDAR) data with a 1.2-ft (0.61-ft root mean squared error) vertical accuracy and 3.3-ft (1-meter) horizontal resolution, to delineate the area flooded at each water level. A map that was produced using this method to delineate the inundated area for the flood that occurred on August 28, 2011, agreed well with highwater marks that had been located in the field using a global positioning system.
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The Generalized Geographic Mapping System (GGMS) is a computer program that draws accurately proportioned maps virtually anywhere in the world, using a variety of land mass data bases. The GGMS is written in standard FORTRAN IV an...
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The Generalized Geographic Mapping System (GGMS) is a computer program that draws accurately proportioned maps virtually anywhere in the world, using a variety of land mass data bases. The GGMS is written in standard FORTRAN IV and is machine-independent except where noted. The GGMS was written to interact with Tektronix PLOT-10 software and 4010-series terminals. The only required Tektronix software is the Terminal Control System, Level 1. If the user's capabilities include a Tektronix flatbed plotter, then the Tektronix Utility Routines are also required. The GGMS is very versatile. It not only generates maps of land masses, but it also makes maximum use of the specific available output 'screen' regardless of the selected borders of the desired output. Two mapping projections, rectangular and Mercator, are available, as are numerous different methods of drawing the graticule (latitude and longitude line grid). The heart of the GGMS is the subroutine MAPP. MAPP is the only GGMS subprogram required to be called before user-defined application routines can be called. Essentially, MAPP computes and draws all borders, draws and labels the graticule, and draws a land mass. As a necessary courtesy to the user, MAPP retains certain values pertaining to the drawn output borders in named common regions.
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This report describes the capabilities and operation of CONTOUR II, a revision of the surface fitting and mapping program originally developed by Mr. A. Beharell. The program is designed to fit a geometric surface in three-dimensi...
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This report describes the capabilities and operation of CONTOUR II, a revision of the surface fitting and mapping program originally developed by Mr. A. Beharell. The program is designed to fit a geometric surface in three-dimensional space to any given set of coordinate data points. The computed smooth surface is then displayed by drawing specified contours on the Calcomp 936 drum plotter. Although this manual includes material contained in the University of Calgary report on CONTOUR, emphasis has been placed on the input changes and additions made to facilitate the use of this program on the CDC 6000 computer systems for engineering calculations of fluid dynamics problems. Details are presented of the control cards and input data preparation for operation of the program. A sample problem is included. (Author)
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Phase 1 called for the following tasks: (1) completion of code to generate intermediate files containing the individual DIRBE observations which would be used to make the superpixelized maps; (2) completion of code necessary to ge...
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Phase 1 called for the following tasks: (1) completion of code to generate intermediate files containing the individual DIRBE observations which would be used to make the superpixelized maps; (2) completion of code necessary to generate the maps themselves; and (3) quality control on test-case maps in the form of point-source extraction and photometry. Items 1 and 2 are well in hand and the tested code is nearly complete. A few test maps have been generated for the tests mentioned in item 3. Map generation is not in production mode yet.
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Phase 1 called for the following tasks: (1) completion of code to generate intermediate files containing the individual DIRBE observations which would be used to make the superpixelized maps; (2) completion of code necessary to ge...
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Phase 1 called for the following tasks: (1) completion of code to generate intermediate files containing the individual DIRBE observations which would be used to make the superpixelized maps; (2) completion of code necessary to generate the maps themselves; and (3) quality control on test-case maps in the form of point-source extraction and photometry. Items 1 and 2 are well in hand and the tested code is nearly complete. A few test maps have been generated for the tests mentioned in item 3. Map generation is not in production mode yet.
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Expression of the equations for a Universal Transverse Mercator (UTM) (Gauss-Kruger) projection in terms of Jacobian elliptic functions, rather than their series expansions, allows the projection to be used over wider zones than t...
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Expression of the equations for a Universal Transverse Mercator (UTM) (Gauss-Kruger) projection in terms of Jacobian elliptic functions, rather than their series expansions, allows the projection to be used over wider zones than the standard 6 deg strips, and thus makes it applicable to satellite data from the NOAA A-G series. An efficient iterative solution method for either UTM or geodetic coordinates is developed using a complex-arithmetic version of Newton's method. The method can be used for longitudes up to 90 deg from the central meridian.
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The purpose of the work under this contract was the development of mathematical techniques and associated computer software for constraining mathematical models of topographic surfaces to agree with digitized stream,road,lake surf...
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The purpose of the work under this contract was the development of mathematical techniques and associated computer software for constraining mathematical models of topographic surfaces to agree with digitized stream,road,lake surface and boundary,and (automatically detected) peak data;so that computer generated contours extracted from these mathematical models would correctly reflect the presence of these features. This research and development effort has resulted in the following major accomplishments:The weighting function interpolation technique, WIT;interpolation and approximation theorems for WIT;sequential least squares techniques applied to control constraints;software for CONtouring via the Surface Averaging Concept, CONSAC;general purpose data editing software, GDES;analytic investigation of stream constraint;preliminary digital data analysis software, SIMCON and THREED;numerical investigation of the data compaction properties of WIT.
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