|
A reverse chronological list of changes to GeographicLib
For more information, see http://geographiclib.sourceforge.net/ The current version of the library is 1.33. Changes between 1.33 (released 2013-10-08) and 1.32 versions: * Add NETGeographic .NET wrapper library (courtesy of Scott Heiman). * Make inspector functions in GeographicLib::Ellipsoid const. * Add Accumulator.cpp to instantiate GeographicLib::Accumulator. * Defer some of the initialization of GeographicLib::OSGB to when it is first called. * Fix bug in autoconf builds under MacOS. Changes between 1.32 (released 2013-07-12) and 1.31 versions: * Generalize C interface for polygon areas to allow vertices to be specified incrementally. * Fix way flags for C++11 support are determined. Changes between 1.31 (released 2013-07-01) and 1.30 versions: * Changes breaking binary compatibility (source compatibility is maintained): + overloaded versions of DMS::Encode, EllipticFunction::EllipticFunction, and GeoCoords::DMSRepresentation, have been eliminated by the use of optional arguments; + correct the declaration of first arg to UTMUPS::DecodeEPSG. * FIX BUG in GeographicLib::GravityCircle constructor (found by Mathieu Peyréga) which caused bogus results for the gravity disturbance and gravity anomaly vectors. (This only affected calculations using GravityCircle. GravityModel calculations did not suffer from this bug.) * Improvements to the build: + add macros GEOGRAPHICLIB_VERSION_{MAJOR,MINOR,PATCH} to Config.h; + fix documentation for new version of perlpod; + improving setting of runtime path for Unix-like systems with cmake; + install PDB files when compiling with Visual Studio to aid debugging; + Windows binary release now uses Matlab R2013a (64-bit) and uses the -largeArrayDims option. * Changes to the geodesic routines: + add Java implementation of the geodesic routines (thanks to Skip Breidbach for the maven support); + FIX BUG: avoid altering input args in Fortran implementation; + more systematic treatment of very short geodesic; + fixes to python port so that they work with version 3.x, in addition to 2.x (courtesy of Amato); + accumulate the perimeter and area of polygons via a double-wide accumulator in Fortran, C, and Matlab implementations (this is already included in the other implementations); + port PolygonArea::AddEdge and PolygonArea::TestEdge to JavaScript and python interfaces; + include documentation on short geodesics. * Unix scripts for downloading datasets, geographiclib-get-{geoids,gravity,magnetic}, skip already download models by default, unless the -f flag is given. * FIX BUGS: meridian convergence and scale returned by TransverseMercatorExact was wrong at a pole. * Improve efficiency of MGRS::Forward by avoiding the calculation of the latitude if possible (adapting an idea of Craig Rollins). * Fixes to the way the Matlab interface routines are built (thanks to Phil Miller and Chris F.). Changes between 1.30 (released 2013-02-27) and 1.29 versions: * Changes to geodesic routines: + fix BUG in fail-safe mechanisms in Geodesic::Inverse; + the command line utility Geod is now called GeodSolve; + allow addition of polygon edges in PolygonArea; + add full Maxima implementation of geodesic algorithms. Changes between 1.29 (released 2013-01-16) and 1.28 versions: * Changes to allow compilation with libc++ (courtesy of Kal Conley). * Add description of geodesics on triaxial ellipsoid to documentation. * Update journal reference for "Algorithms for geodesics". Changes between 1.28 (released 2012-12-11) and 1.27 versions: * Changes to geodesic routines: + compute longitude difference exactly; + hence fix BUG in area calculations for polygons with vertices very close to the prime meridian; + fix BUG is geoddistance.m where the value of m12 was wrong for meridional geodesics; + add Matlab implementations of the geodesic projections; + remove unneeded special code for geodesics which start at a pole; + include polygon area routine in C and Fortran implementations; + add doxygen documentation for C and Fortran libraries. Changes between 1.27 (released 2012-11-29) and 1.26 versions: * Changes to geodesic routines: + add native Matlab implementations: geoddistance.m, geodreckon.m, geodarea.m; + add C and Fortran implementations; + improve the solution of the direct problem so that the series solution is accurate to round off for |f| < 1/50; + tighten up the convergence criteria for solution of the inverse problem; + no longer signal failures of convergence with NaNs (a slightly less accurate answer is returned instead). * Fix DMS::Decode double rounding BUG. * On MacOSX platforms with the cmake configuration, universal binaries are built. Changes between 1.26 (released 2012-10-22) and 1.25 versions: * Replace the series used for geodesic areas by one with better convergence (this only makes an appreciable difference if |f| > 1/150). Changes between 1.25 (released 2012-10-16) and 1.24 versions: * Changes to geodesic calculations: + restart Newton's method in Geodesic::Inverse when it goes awry; + back up Newton's method with the bisection method; + Geodesic::Inverse now converges for any value of f; + add GeodesicExact and GeodesicLineExact which are formulated in terms of elliptic integrals and thus yield accurate results even for very eccentric ellipsoids. + the -E option to Geod invokes these exact classes. * Add functionality to EllipticFunction: + add all the traditional elliptic integrals; + remove restrictions on argument range for incomplete elliptic integrals; + allow imaginary modulus for elliptic integrals and elliptic functions; + make interface to the symmetric elliptic integrals public. * Allow GeographicLib::Ellipsoid to be copied. * Changes to the build tools: + cmake uses folders in Visual Studio to reduce clutter; + allow precision of reals to be set in cmake; + fail gracefully in the absence of pod documentation tools; + remove support for maintainer tasks in Makefile.mk. Changes between 1.24 (released 2012-09-22) and 1.23 versions: * Allow the specification of the hemisphere in UTM coordinates in order to provide continuity across the equator: + add UTMUPS::Transfer; + add GeoCoords::UTMUPSRepresentation(bool, int) and GeoCoords::AltUTMUPSRepresentation(bool, int); + use the hemisphere letter in, e.g., GeoConvert -u -z 31N. * Add UTMUPS::DecodeEPSG and UTMUPS::EncodeEPSG. * cmake changes: + restore support for cmake 2.4.x; + explicitly check version of doxygen. * Fix building under cygwin. * Document restrictions on f in the Introduction. * Fix python interface to work with version 2.6.x. Changes between 1.23 (released 2012-07-17) and 1.22 versions: * Documentation changes: + remove html documentation from distribution and use web links if doxygen is not available; + use doxygen tags to document exceptions; + begin migrating the documentation to using Greek letters where appropriate (requires doxygen 1.8.1.2 or later). * Add Math::AngNormalize and Math::AngNormalize2; the allowed range for longitudes and azimuths widened to [-540d, 540d). * DMS::Decode understands more unicode symbols. * Geohash uses geohash code "nan" to stand for not a number. * Add Ellipsoid::NormalCurvatureRadius. * Various fixes in LambertConformalConic, TransverseMercator, PolarStereographic, and Ellipsoid to handle reverse projections of points near infinity. * Fix programming blunder in LambertConformalConic::Forward (incorrect results were returned if the tangent latitude was negative). Changes between 1.22 (released 2012-05-27) and 1.21 versions: * Add Geohash and Ellipsoid classes. * Fix bug in AlbersEqualArea of very prolate ellipsoids (b^2 > 2 a^2). * cmake changes: + optionally use PACKAGE_PATH and INSTALL_PATH to determine CMAKE_INSTALL_PREFIX; + use COMMON_INSTALL_PATH to determine layout of installation directories; + as a consequence, the installation paths for the documentation, and python and matlab interfaces are shortened for Windows; + zip source distribution now uses DOS line endings; + the tests work in debug mode for Windows; + default setting of GEOGRAPHICLIB_DATA does not depend on CMAKE_INSTALL_PREFIX; + add a cmake configuration for build tree. Changes between 1.21 (released 2012-04-25) and 1.20 versions: * Support colon-separated DMS output: + DMS::Encode and GeoCoords::DMSRepresentation generalized; + GeoConvert and Geod now accept a -: option. * GeoidEval does not print the gradient of the geoid height by default (because it's subject to large errors); give the -g option to get the gradient printed. * Work around optimization BUG in GeographicLib::Geodesic::Inverse with tdm mingw g++ version 4.6.1. * autoconf fixed to ensure that that out-of-sources builds work; document this as the preferred method of using autoconf. * cmake tweaks: + simplify the configuration of doxygen; + allow the Matlab compiler to be specified with the MATLAB_COMPILER option. Changes between 1.20 (released 2012-03-23) and 1.19 versions: * cmake tweaks: + improve find_package's matching of compiler versions; + CMAKE_INSTALL_PREFIX set from CMAKE_PREFIX_PATH if available; + add "x64" to the package name for the 64-bit binary installer; + fix cmake warning with Visual Studio Express. * Fix SphericalEngine to deal with aggessive iterator checking by Visual Studio. * Fix transcription BUG is Geodesic.js. Changes between 1.19 (released 2012-03-13) and 1.18 versions: * Slight improvement in Geodesic::Inverse for very short lines. * Fix argument checking tests in MGRS::Forward. * Add --comment-delimiter and --line-separator options to the utility programs. * Add installer for 64-bit Windows; the compiled Matlab interface is supplied with the Windows 64-bit installer only. Changes between 1.18 (released 2012-02-18) and 1.17 versions: * Improve documentation on configuration with cmake. * cmake's find_package ensures that the compiler versions match on Windows. * Improve documentation on compiling Matlab interface. * Binary installer for Windows installs under C:/pkg-vc10 by default. Changes between 1.17 (released 2012-01-21) and 1.16 versions: * Work around optimization BUG in Geodesic::Inverse with g++ version 4.4.0 (mingw). * Fix BUG in argument checking with OSGB::GridReference. * Fix missing include file in SphericalHarmonic2. * Add simple examples of usage for each class. * Add internal documenation to the cmake configuration files. Changes between 1.16 (released 2011-12-07) and 1.15 versions: * Add calculation of the earth's gravitational field: + add NormalGravity GravityModel and GravityCircle classes; + add command line utility Gravity; + add Gravity models; + add Constants::WGS84_GM(), Constants::WGS84_omega(), and similarly for GRS80. * Build uses GEOGRAPHICLIB_DATA to specify a common parent directory for geoid, gravity, and magnetic data (instead of GEOGRAPHICLIB_GEOID_PATH, etc.); similarly, GeoidEval, Gravity, and MagneticField, look at the environment variable GEOGRAPHICLIB_DATA to locate the data. * Spherical harmonic software changes: + capitalize enums SphericalHarmonic::FULL and SphericalHarmonic::SCHMIDT (the lower case names are retained but deprecated); + optimize the sum by using a static table of square roots which is updated by SphericalEngine::RootTable; + avoid overflow for high degree models. * Magnetic software fixes: + fix documentation BUG in MagneticModel::Circle; + make MagneticModel constructor explicit; + provide default MagneticCircle constructor; + add additional inspector functions to MagneticCircle; + add -c option to MagneticField; + default height to zero in MagneticField. Changes between 1.15 (released 2011-11-08) and 1.14 versions: * Add calculation of the earth's magnetic field: + add MagneticModel and MagneticCircle classes; + add command line utility MagneticField; + add Magnetic models; + add Installing the magnetic field models; + add The format of the magnetic model files; + add classes SphericalEngine, CircularEngine, SphericalHarmonic, SphericalHarmonic1, and SphericalHarmonic2. which sum spherical harmonic series. * Add Utility class to support I/O and date manipulation. * Cmake configuration includes a _d suffix on the library built in debug mode. * For the Python package, include manifest and readme files; don't install setup.py for non-Windows systems. * Include Doxygen tag file in distribution as doc/html/Geographic.tag. Changes between 1.14 (released 2011-09-30) and 1.13 versions: * Ensure that geographiclib-config.cmake is relocatable. * Allow more unicode symbols to be used in DMS::Decode. * Modify GeoidEval so that it can be used to convert the height datum for LIDAR data. * Modest speed-up of Geodesic::Inverse. * Changes in python interface: + FIX BUG in transcription of Geodesic::Inverse; + include setup.py for easy installation; + python only distribution is available at http://pypi.python.org/pypi/geographiclib * Supply a minimal Qt qmake project file for library src/Geographic.pro. Changes between 1.13 (released 2011-08-13) and 1.12 versions: * Changes to I/O: + allow : (colon) to be used as a DMS separator in DMS::Decode; + also accept Unicode symbols for degrees, minutes, and seconds (coded as UTF-8); + provide optional swaplatlong argument to various DMS and GeoCoords functions to make longitude precede latitude; + GeoConvert now has a -w option to make longitude precede latitude on input and output; + include a JavaScript version of DMS. * Slight improvement in starting guess for solution of geographic latitude in terms of conformal latitude in TransverseMercator, TransverseMercatorExact, and LambertConformalConic. * For most classes, get rid of const member variables so that the default copy assignment works. * Put Math and Accumulator in their own header files. * Remove unused "fast" GeographicLib::Accumulator method. * Reorganize the Python interface. * Withdraw some deprecated routines. * cmake changes: + include FindGeographic.cmake in distribution; + building with cmake creates and installs geographiclib-config.cmake; + better support for building a shared library under Windows. Changes between 1.12 (released 2011-07-21) and 1.11 versions: * Change license to MIT/X11. * Add GeographicLib::PolygonArea class and equivalent Matlab function. * Provide JavaScript and Python implementations of geodesic routines. * Fix Windows installer to include runtime dlls for Matlab. * Fix (innocuous) unassigned variable in Geodesic::GenInverse. * Geodesic routines in Matlab return a12 as first column of aux return value (incompatible change). * A couple of code changes to enable compilation with Visual Studio 2003. Changes between 1.11 (released 2011-06-27) and 1.10 versions: * Changes to Planimeter: + add -l flag to Planimeter for polyline calculations; + trim precision of area to 3 decimal places; + FIX BUG with pole crossing edges (due to compiler optimization). * Geod no longer reports the reduced length by default; however the -f flag still reports this and in addition gives the geodesic scales and the geodesic area. * FIX BUGS (compiler-specific) in inverse geodesic calculations. * FIX BUG: accommodate tellg() returning -1 at end of string. * Change way flattening of the ellipsoid is specified: + constructors take f argument which is taken to be the flattening if f < 1 and the inverse flattening otherwise (this is a compatible change for spheres and oblate ellipsoids, but it is an INCOMPATIBLE change for prolate ellipsoids); + the -e arguments to the Utility Programs are handled similarly; in addition, simple fractions, e.g., 1/297, can be used for the flattening; + introduce Constants::WGS84_f() for the WGS84 flattening (and deprecate Constants::WGS84_r() for the inverse flattening); + most classes have a Flattening() member function; + InverseFlattening() has been deprecated (and now returns inf for a sphere, instead of 0). Changes between 1.10 (released 2011-06-11) and 1.9 versions: * Improvements to Matlab/Octave interface: + add {geocentric,localcartesian}{forward,reverse}; + make geographiclibinterface more general; + install the source for the interface; + cmake compiles the interface if ENABLE_MATLAB=ON; + include compiled interface with Windows binary installer. * Fix various configuration issues + autoconf did not install Config.h; + cmake installed in man/man1 instead of share/man/man1; + cmake did not set the rpath on the tools. Changes between 1.9 (released 2011-05-28) and 1.8 versions: * FIX BUG in area returned by Planimeter for pole encircling polygons. * FIX BUG in error message reported when DMS::Decode reads the string "5d.". * FIX BUG in AlbersEqualArea::Reverse (lon0 not being used). * Ensure that all exceptions thrown in the Utility Programs are caught. * Avoid using catch within GeographicLib::DMS. * Move Accumulator class from Planimeter.cpp to Constants.hpp. * Add Math::sq<T>. * Simplify Installing the geoid datasets + add geographiclib-get-geoids for Unix-like systems; + add installers for Windows. * Provide cmake support: + build binary installer for Windows; + include regression tests; + add --input-string, --input-file, --output-file options to the Utility Programs to support tests. * Rename utility EquidistantTest as GeodesicProj and TransverseMercatorTest as TransverseMercatorProj. * Add ConicProj. * Reverse the initial sense of the -s option for Planimeter. * Migrate source from subversion to git. Changes between 1.8 (released 2011-02-22) and 1.7 versions: * Optionally return rotation matrix from GeographicLib::Geocentric and GeographicLib::LocalCartesian. * For the Utility Programs, supply man pages, -h prints the synopsis, --help prints the man page, --version prints the version. * Use accurate summation in Planimeter. * Add 64-bit targets for Visual Studio 2010. * Use templates for defining math functions and some constants. * GeographicLib::Geoid updates + Add GeographicLib::Geoid::DefaultGeoidPath and GeographicLib::Geoid::DefaultGeoidName; + GeoidEval uses environment variable GEOID_NAME as the default geoid; + Add --msltohae and --haetomsl as GeoidEval options (and don't document the single hyphen versions). * Remove documentation that duplicates papers on transverse Mercator and geodesics. Changes between 1.7 (released 2010-12-21) and 1.6 versions: * FIX BUG in scale returned by GeographicLib::LambertConformalConic::Reverse. * Add GeographicLib::AlbersEqualArea projection. * Library created by Visual Studio is Geographic.lib instead of GeographicLib.lib (compatible with makefiles). * Make classes NaN aware. * Use cell arrays for MGRS strings in Matlab. * Add solution/project files for Visual Studio 2010 (32-bit only). * Use C++11 static_assert and math functions, if available. Change between 1.6 (released 2010-11-23) and 1.5 versions: * FIX BUG introduced in GeographicLib::Geoid in version 1.5 (found by Dave Edwards). Changes between 1.5 (released 2010-11-19) and 1.4 versions: * Improve area calculations for small polygons. * Add -s and -r flags to Planimeter utility. * Improve the accuracy of GeographicLib::LambertConformalConic using divided differences. * FIX BUG in meridian convergence returned by LambertConformalConic::Forward. * Add optional threadsafe parameter to GeographicLib::Geoid constructor. WARNING: This changes may break binary compatibility with previous versions of GeographicLib. However, the library is source compatible. * Add GeographicLib::OSGB. * Matlab and Octave interfaces to GeographicLib::UTMUPS, GeographicLib::MGRS, GeographicLib::Geoid, GeographicLib::Geodesic provided. * Minor changes + explicitly turn on optimization in Visual Studio 2008 projects; + add missing dependencies in some Makefiles; + move pi() and degree() from GeographicLib::Constants to GeographicLib::Math; + introduce GeographicLib::Math::extended type to aid testing; + add GeographicLib::Math::epi() and GeographicLib::Math::edegree(). + fixes to compile under cygwin; + tweak expression used to find latitude from conformal latitude. Changes between 1.4 (released 2010-09-12) and 1.3 versions: * Changes to GeographicLib::Geodesic and GeographicLib::GeodesicLine: + FIX BUG in Geodesic::Inverse with prolate ellipsoids; + add area computations to Geodesic::Direct and Geodesic::Inverse; + add geodesic areas to geodesic test set; + make GeodesicLine constructor public; + change longitude series in Geodesic into Helmert-like form; + ensure that equatorial geodesics have cos(alpha0) = 0 identically; + generalize interface for Geodesic and GeodesicLine; + split GeodesicLine and Geodesic into different files; + signal convergence failure in Geodesic::Inverse with NaNs; + deprecate one function in Geodesic and two functions in GeodesicLine; + deprecate -n option for Geod. WARNING: These changes may break binary compatibility with previous versions of GeographicLib. However, the library is source compatible (with the proviso that GeographicLib/GeodesicLine.hpp may now need to be included). * Add the Planimeter utility for computing the areas of geodesic polygons. * Improve iterative solution of GeographicLib::Gnomonic::Reverse. * Add GeographicLib::Geoid::ConvertHeight. * Add -msltohae, -haetomsl, and -z options to \ref geoideval. * Constructors check that minor radius is positive. * Add overloaded Forward and Reverse functions to the projection classes which don't return the convergence (or azimuth) and scale. * Document function parameters and return values consistently. Changes between 1.3 (released 2010-07-21) and 1.2 versions: * Add GeographicLib::Gnomonic, the ellipsoid generalization of the gnomonic projection. * Add -g and -e options to Equidistanttest. * Use fixed-point notation for output from Cartconvert, Equidistanttest, Transversemercatortest. * PolarStereographic: + Improved conversion to conformal coordinates; + Fix bug with scale at opposite pole; + Complain if latitude out of range in SetScale. * Add GeographicLib::Math::NaN(). * Add long double version of hypot for Windows. * Add EllipticFunction::E(real). * Update references to Geotrans in MGRS documentation. * Speed up tmseries.mac. Changes between 1.2 (released 2010-05-21) and 1.1 versions: * FIX BUGS in GeographicLib::Geodesic, + wrong azimuth returned by Direct if point 2 is on a pole; + Inverse sometimes fails with very close points. * Improve calculation of scale in GeographicLib::CassiniSoldner, + add GeodesicLine::Scale, GeodesicLine::EquatorialAzimuth, and GeodesicLine::EquatorialArc; + break friend connection between CassiniSoldner and Geodesic. * Add DMS::DecodeAngle and DMS::DecodeAzimuth. Extend DMS::Decode and DMS::Encode to deal with distances. * Code and documentation changes in Geodesic and Geocentric for consistency with the forthcoming paper on geodesics. * Increase order of series using in Geodesic to 6 (full accuracy maintained for ellipsoid flattening < 0.01). * Macro __NO_LONG_DOUBLE_MATH to disable use of long double. * Correct declaration of Math::isfinite to return a bool. * Changes in the Utility Programs, + improve error reporting when parsing command line arguments; + accept latitudes and longitudes in decimal degrees or degrees, minutes, and seconds, with optional hemisphere designators; + GeoConvert -z accepts zone or zone+hemisphere; + GeoidEval accepts any of the input formats used by GeoConvert; + CartConvert allows the ellipsoid to be specified with -e. Changes between 1.1 (released 2010-02-09) and 1.0 versions: * FIX BUG (introduced in 2009-03) in EllipticFunction::E(sn,cn,dn). * Increase accuracy of scale calculation in TransverseMercator and TransverseMercatorExact. * Code and documentation changes for consistency with arXiv:1002.1417 Changes between 1.0 (released 2010-01-07) and 2009-11 versions: * Add autoconf configuration files. * BUG FIX: Improve initial guess for Newton's method in PolarStereographic::Reverse. (Previously this failed to converge when the co-latitude exceeded about 130 deg.) * Constructors for TransverseMercator, TransverseMercatorExact, PolarStereographic, Geocentric, and Geodesic now check for obvious problems with their arguments and throw an exception if necessary. * Most classes now include inspector functions such as MajorRadius() so that you can determine how instances were constructed. * Add GeographicLib::LambertConformalConic class. * Add GeographicLib::PolarStereographic::SetScale to allow the latitude of true scale to be specified. * Add solution and project files for Visual Studio 2008. * Add GeographicLib::GeographicErr for exceptions. * GeographicLib::Geoid changes: + BUG FIX: fix typo in GeographicLib::Geoid::Cache which could cause a segmentation fault in some cases when the cached area spanned the prime meridian. + Include sufficient edge data to allow heights to be returned for cached area without disk reads; + Add inspector functions to query the extent of the cache. Changes between 2009-11 and 2009-10 versions: * Allow specification of "closest UTM zone" in GeographicLib::UTMUPS and GeoConvert (via -t option). * Utilities now complain is there are too many tokens on input lines. * Include real-to-real versions of GeographicLib::DMS::Decode and GeographicLib::DMS::Encode. * More house-cleaning changes: + Ensure that functions which return results through reference arguments do not alter the arguments when an exception is thrown. + Improve accuracy of GeographicLib::MGRS::Forward. + Include more information in some error messages. + Improve accuracy of inverse hyperbolic functions. + Fix the way GeographicLib::Math functions handle different precisions. Changes between 2009-10 and 2009-09 versions: * Change web site to http://geographiclib.sourceforge.net * Several house-cleaning changes: + Change from the a flat directory structure to a more easily maintained one. + Introduce Math class for common mathematical functions (in Constants.hpp). + Use Math::real as the type for all real quantities. By default this is typedef'ed to double; and the library should be installed this way. + Eliminate const reference members of AzimuthalEquidistant, CassiniSoldner and LocalCartesian so that they may be copied. + Make several constructors explicit. Disallow some constructors. Disallow copy constructor/assignment for Geoid. + Document least square formulas in Geoid.cpp. + Use unsigned long long for files positions of geoid files in Geoid. + Introduce optional mgrslimits argument in UTMUPS::Forward and UTMUPS::Reverse to enforce stricter MGRS limits on eastings and northings.in + Add 64-bit targets in Visual Studio project files. Changes between 2009-09 and 2009-08 versions: * Add GeographicLib::Geoid and GeoidEval utility. Changes between 2009-08 and 2009-07 versions: * Add GeographicLib::CassiniSoldner class and EquidistantTest utility. * Fix bug in GeographicLib::Geodesic::Inverse where NaNs were sometimes returned. * INCOMPATIBLE CHANGE: AzimuthalEquidistant now returns the reciprocal of the azimuthal scale instead of the reduced length. * Add -n option to GeoConvert. Changes between 2009-07 and 2009-06 versions: * Speed up the series inversion code in tmseries.mac and geod.mac. * Reference Borkowski in section on Geocentric coordinates. Changes between 2009-06 and 2009-05 versions: * Add routines to decode and encode zone+hemisphere to GeographicLib::UTMUPS. * Clean up code in GeographicLib::Geodesic. Changes between 2009-05 and 2009-04 versions: * Improvements to GeographicLib::Geodesic: + more economical series expansions, + return reduced length (as does the Geod utility), + improved calculation of starting point for inverse method, + use reduced length to give derivative for Newton's method. * Add AzimuthalEquidistant class. + Make GeographicLib::Geocentric, GeographicLib::TransverseMercator, and GeographicLib::PolarStereographic classes work with prolate ellipsoids. * CartConvert checks its inputs more carefully. * Remove reference to defunct Constants.cpp from GeographicLib.vcproj. Changes between 2009-04 and 2009-03 versions: * Use compile-time constants to select the order of series in GeographicLib::TransverseMercator. * 2x unroll of Clenshaw summation to avoid data shuffling. * Simplification of GeographicLib::EllipticFunction::E. * Use STATIC_ASSERT for compile-time checking of constants. * Improvements to GeographicLib::Geodesic: + compile-time option to change order of series used, + post maxima code for generating the series, + tune the order of series for double, + improvements in the selection of starting points for Newton's method, + accept and return spherical arc lengths, + works with both oblate and prolate spheroids, + add -a, -e, -b options to the Geod utility. Changes between 2009-03 and 2009-02 versions: * Add GeographicLib::Geodesic and the Geod utility. * Declare when no exceptions are thrown by functions. * Minor changes to GeographicLib::DMS class. * Use invf = 0 to mean a sphere in constructors to some classes. * The makefile creates a library and includes an install target. * Rename GeographicLib::ECEF to GeographicLib::Geocentric, ECEFConvert to CartConvert. * Use inline functions to define constant doubles in Constants.hpp. Changes between 2009-02 and 2009-01 versions: * Fix documentation of constructors (flattening -> inverse flattening). * Use std versions of math functions. * Add ECEF and LocalCartesian classes and ECEFConvert utility. * Gather the documentation on the utility programs onto one page. |