U.S. Geological Survey METHODS TO ACHIEVE ACCURATE PROJECTION OF REGIONAL AND GLOBAL RASTER DATABASES
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paper_title: Map Projections: A Working Manual

paper_content:

If projection is not specified here it uses proj='aeqd' (azimuthal equidistant). Returns: grid: grid object (R39), Snyder, J. P. Map Projections–A Working Manual. This web page relates to the PROJ.4 Cartographic Projections library ​OF90-284.pdf (2.7MB): The main users manual for PROJ, however, this VerticalDatums working notes on the project to support vertical datums in ​ Map projections: An introduction to cartography emphasizing map projections: their properties. Abstract The approach to map projections in which maps (using geometric principles) from a sphere Snyder JP (1987) Map projections: a working manual.
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paper_title: Map Projections: Theory and Applications

paper_content:

INTRODUCTION. Introduction to the Problem. Basic Geometric Shapes. Distortion. Scale. Feature Preserved in Projections. Projection Surface. Orientation of the Azimuthal Plane. Orientation of a Cone of Cylinder. Tangency or Secancy. Projection Technique. Plotting Equations. Plotting Tables. MATHEMATICAL FUNDAMENTALS. Coordinate Systems and Azimuth. Grid Systems. Differential Geometry of Space Curves. Differential Geometry of a General Surface. First Fundamental Form. Second Fundamental Form. Surfaces of Revolution. Developable Surfaces. Transformation Matrices. Definition of Equality of Area and Conformality. Rotation of Coordinate Systems. Convergency of the Meridians. Constant of the Cone and Slant Height. FIGURE OF THE EARTH. Geodetic Considerations. Geometry of the Elipse. The Spheroid as a Model of the Earth. The Spherical Model of the Earth. The Triaxial Ellipsoid. EQUAL AREA PROJECTIONS. General Procedures. The Authalic Sphere. Albers, One Standard Parallel. Albers, Two Standard Parallels. Bonne. Azimuthal. Cylindrical. Sinusoidal. Mollweide. Parabolic. Hammer-Aitoff. Boggs Eumorphic. Eckert IV. Interrupted Projections. CONFORMAL PROJECTIONS. General Procedures. Conformal Sphere. Lambert Conformal, One Standard Parallel. Lambert Conformal, Two Standard Parallels. Stereographic. Mercator. State Plane Coordinates. Military Grid Systems. CONVENTIONAL PROJECTIONS. Summary of Procedures. Gnomonic. Azimuthal Equidistant. Orthographic. Simple Conic, One Standard Parallel. Simple Conic, Two Standard Parallels. Conical Perspective. Polyconic. Perspective Cylindrical. Plate Carree'. Carte Parallelogrammatique. Miller. Globular. Aerial Perspective. Van der Grinten. Cassini. Robinson. THEORY OF DISTORTIONS. Qualitative View of Distortion. Quantization of Distortion. Distortions from Euclidean Geometry. Distortions from Different Geometry. Distortions in Equal Area Projections. Distortions in Conventional Projections. MAPPING APPLICATIONS. Map Projections in the Southern Hemisphere. Distortion in the Transformation from the Spheroid to the Authalic Sphere. Distances on the Loxodrome. Tracking System Displays. Differential Distances about a Position. COMPUTER APPLICATIONS. Direct Transformation Subroutines. Inverse Transformation Subroutines. Calling Program for Subroutines. State Plane Coordinates. UTM Grids. Computer Graphics. USES OF MAP PROJECTIONS. Fidelity to Features on the Earth. Characteristics of Parallels and Meridians. Considerations in the Choice of a Projection. Recommended Areas of Coverage. Recommended Set of Map Projections. Conclusion.
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paper_title: Map Projections: A Reference Manual

paper_content:

1.Introduction 2. General Theory of Map Projections 3. Map Projections with Straight Parallels 4. Map Projections with Parallels in the Shape of Concentric Circles 5. Map Projections with Parallels in the Shape on Nonconcentric Circles 6. Projections for Topographic and Named Quadrangle Maps 7. Research in Map Projections Best and Ideal Map Projections 8. Numerical Methods in Mathematical Cartography 9. Choice and Identification in Map Projections 10. Problems and Automation in Map Projections 11. Summary of Miscellaneous Map Projections. Normal Normal Default Paragraph Font Default Paragraph Font wdooley$P:\sourcecd.vf7\tnf_books\TF1904.docy?? Unknowny! Times New Roman Times New Roman Symbol Symbol '
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paper_title: Map Projection Transformation Principles And Applications

paper_content:

Thank you for reading map projection transformation principles and applications. Maybe you have knowledge that, people have search hundreds times for their favorite books like this map projection transformation principles and applications, but end up in infectious downloads. Rather than reading a good book with a cup of tea in the afternoon, instead they juggled with some harmful bugs inside their desktop computer.
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paper_title: Map Projections: Theory and Applications

paper_content:

INTRODUCTION. Introduction to the Problem. Basic Geometric Shapes. Distortion. Scale. Feature Preserved in Projections. Projection Surface. Orientation of the Azimuthal Plane. Orientation of a Cone of Cylinder. Tangency or Secancy. Projection Technique. Plotting Equations. Plotting Tables. MATHEMATICAL FUNDAMENTALS. Coordinate Systems and Azimuth. Grid Systems. Differential Geometry of Space Curves. Differential Geometry of a General Surface. First Fundamental Form. Second Fundamental Form. Surfaces of Revolution. Developable Surfaces. Transformation Matrices. Definition of Equality of Area and Conformality. Rotation of Coordinate Systems. Convergency of the Meridians. Constant of the Cone and Slant Height. FIGURE OF THE EARTH. Geodetic Considerations. Geometry of the Elipse. The Spheroid as a Model of the Earth. The Spherical Model of the Earth. The Triaxial Ellipsoid. EQUAL AREA PROJECTIONS. General Procedures. The Authalic Sphere. Albers, One Standard Parallel. Albers, Two Standard Parallels. Bonne. Azimuthal. Cylindrical. Sinusoidal. Mollweide. Parabolic. Hammer-Aitoff. Boggs Eumorphic. Eckert IV. Interrupted Projections. CONFORMAL PROJECTIONS. General Procedures. Conformal Sphere. Lambert Conformal, One Standard Parallel. Lambert Conformal, Two Standard Parallels. Stereographic. Mercator. State Plane Coordinates. Military Grid Systems. CONVENTIONAL PROJECTIONS. Summary of Procedures. Gnomonic. Azimuthal Equidistant. Orthographic. Simple Conic, One Standard Parallel. Simple Conic, Two Standard Parallels. Conical Perspective. Polyconic. Perspective Cylindrical. Plate Carree'. Carte Parallelogrammatique. Miller. Globular. Aerial Perspective. Van der Grinten. Cassini. Robinson. THEORY OF DISTORTIONS. Qualitative View of Distortion. Quantization of Distortion. Distortions from Euclidean Geometry. Distortions from Different Geometry. Distortions in Equal Area Projections. Distortions in Conventional Projections. MAPPING APPLICATIONS. Map Projections in the Southern Hemisphere. Distortion in the Transformation from the Spheroid to the Authalic Sphere. Distances on the Loxodrome. Tracking System Displays. Differential Distances about a Position. COMPUTER APPLICATIONS. Direct Transformation Subroutines. Inverse Transformation Subroutines. Calling Program for Subroutines. State Plane Coordinates. UTM Grids. Computer Graphics. USES OF MAP PROJECTIONS. Fidelity to Features on the Earth. Characteristics of Parallels and Meridians. Considerations in the Choice of a Projection. Recommended Areas of Coverage. Recommended Set of Map Projections. Conclusion.
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paper_title: Map Projections: A Reference Manual

paper_content:

1.Introduction 2. General Theory of Map Projections 3. Map Projections with Straight Parallels 4. Map Projections with Parallels in the Shape of Concentric Circles 5. Map Projections with Parallels in the Shape on Nonconcentric Circles 6. Projections for Topographic and Named Quadrangle Maps 7. Research in Map Projections Best and Ideal Map Projections 8. Numerical Methods in Mathematical Cartography 9. Choice and Identification in Map Projections 10. Problems and Automation in Map Projections 11. Summary of Miscellaneous Map Projections. Normal Normal Default Paragraph Font Default Paragraph Font wdooley$P:\sourcecd.vf7\tnf_books\TF1904.docy?? Unknowny! Times New Roman Times New Roman Symbol Symbol '
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paper_title: Image reconstruction by parametric cubic convolution

paper_content:

Abstract A parametric implementation of cubic convolution image reconstruction is presented which is generally superior to the standard algorithm and which can be optimized to the frequency content of the image.
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Title: U.S. Geological Survey METHODS TO ACHIEVE ACCURATE PROJECTION OF REGIONAL AND GLOBAL RASTER DATABASES

Section 1: BACKGROUND
Description 1: Provide an overview of the historical and current challenges in map projection related to regional and global raster datasets, and explain the necessity of this research.

Section 2: Results of Previous Work
Description 2: Summarize the findings from prior studies on the effects of different projections on raster data accuracy, including the models developed for error estimation.

Section 3: PROCEDURES/METHODS
Description 3: Detail the general approach of the research, including the development of a projection selection system and specific techniques to correct projection errors.

Section 4: Projection Selection System
Description 4: Describe the decision support system (DSS) developed to help users choose appropriate projections based on data type, cell size, and location, and how it minimizes error.

Section 5: Dynamic Projection
Description 5: Explain the dynamic projection approach, which adjusts projection formulas based on cell size and latitude to achieve higher accuracy.

Section 6: Error Analysis
Description 6: Elaborate on the error correction procedures that adjust raster cell areas to true values, focusing on size and categorical errors using horizontal and vertical scale factors.

Section 7: Resampling
Description 7: Discuss new resampling techniques that account for resolution and scale changes to improve accuracy and indicate how these techniques adapt to different types of data.

Section 8: CONCLUSIONS
Description 8: Summarize the potential impact of the research on providing accurate projection transformations for USGS users and the benefits of the proposed methods.

Section 9: CONTRIBUTIONS AND SIGNIFICANCE
Description 9: Highlight the major contributions and benefits of the research, including improved user support systems, error estimation methods, and enhanced environmental models.