GeoDLL 19.01

GeoDLL is a Geodetic Development Kit / Geodetic Function Library with worldwide 2D and 3D Coordinate Transformation, Datum Shift, Meridian Convergence and Extra Parameter with highest accuracy. Furthermore: Helmert and Molodensky Parameters, NTv2, HARN, INSPIRE, EPSG, Digital Elevation Model (DEM), distance and Time Zone calculations and much more. GeoDLL for geodetic and GIS development is available as 32Bit and 64Bit DLL and as C++ source code. GeoDLL supports the development of geodetic software on various platforms by providing geodetic functions. Thus, geodetic functions of GeoDLL can be linked to programs written in C, C++, C#, Java, Pascal, Delphi, MS-Access, Visual Basic, Visual Objects or which are written in other programming languages. The most important application of GeoDLL is to include professional Coordinate Transformations in own programs. These Coordinate and Reference Systems are supported: The current and historical Systems of all countries of Europe - The European ETRS89 systems forced by INSPIRE - The US and Canadian NAD, NTv2, HARN and SPCS Coordinate Reference Systems - The Coordinate Reference Systems of most countries of all continents - The Coordinate Reference Systems of Germany, Austria and Switzerland incl. NTv2 - The Geographic coordinates in different notations and Cartesian coordinates - Worldwide NTv2 gridfile supported Coordinate Transformations - Worldwide used numeric and alphanumeric Coordinate Systems - Most of EPSG supported Coordinate Reference Systems - ITRS annual realizations or WGS84 epochs for GPS measurements - WGS84 Coordinate Transformations in consideration of the continental drift - User defined Coordinate Systems, Reference Systems and earth ellipsoids - Meridian Convergence, Origin Center Meridian, Geographical Point Coordinates. GeoDLL is written in C / C ++ and is developed using Microsoft Visual Studio. Thus very fast performance, compact code and high stability are assured.

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History updates (Complete changelogs since the listing on this site)

19.01 [01-01-19]

New function for setting a directory for the GeoDLL binary file. New functions for analyzing and converting NTv2 files. New NTv2 Reference Systems of Great Britain, Hungary and Venezuela. Updated time zone and daylight saving time data. Insertion of Polygonal Validity Scopes into a NTV2 binary file.

Other versions : 18.27 18.24 18.16 18.10 18.05 18.00 17.38 17.31 17.28 17.17 17.16 17.11 16.32 16.28 16.24 16.20 16.19 16.09 15.21 15.19 15.18 15.15 15.10 15.08 15.06 15.05 15.02 15.00 14.79 14.75 14.70 14.60 14.43 14.38 14.33 13.15 13.07 12.26 12.06 12.01 11.21 11.20 11.19 11.18 11.15 11.14 11.13 11.12 11.11 11.10 11.03 11.02 10.36 10.35 10.33 10.32 10.30 10.24 10.21 10.16 10.01

v18.27 [10-31-18]

Four new functions for analyzing and converting NTv2 files. New NTv2 Reference Systems of Great Britain, Hungary and Venezuela. Updated time zone and daylight saving time data in GeoDLL. Insertion of Polygonal Validity Scopes into a NTV2 binary file. New tools for processing NTv2 files.

v18.24 [10-01-18]

New NTv2 Reference Systems of Great Britain, Hungary and Venezuela. New function getntvgridarray() for arrays with NTv2 grid information. Updated time zone and daylight saving time data in GeoDLL. Insertion of Polygonal Validity Scopes into a NTV2 binary file. New tools for processing NTv2 files.

v18.16 [08-08-18]

Updated time zone and daylight saving time data in GeoDLL. Insertion of Polygonal Validity Scopes into a NTV2 binary file. New tools for processing NTv2 files. New CRS of Australia MGA2020 / GDA2020 with NTv2 support. New Coordinate System NAC-Code, (c) NAC Geographic Products Inc.

v18.10 [04-25-18]

Insertion of Polygonal Validity Scopes into a NTV2 binary file. Copy of an area of a NTv2 grid file to a new binary file. Conversion of a NTv2 binary file to an ASCII file. GeoDLL source version with new Binary Generator as C++ source. New CRS of Australia MGA2020 / GDA2020 with NTv2 support.

v18.05 [03-20-18]

GeoDLL sorce with new Binary Generator. New CRS of Australia MGA2020 / GDA2020. Highly accurate NTv2 system of Baden-Württemberg. New Coordinate System NAC-Code. New help topic "WGS84 / ITRS Epochs / Continental Drift". Meridian Convergence, Origin Center Meridian. Automatic NTv2 files search.

v18.00 [12-30-17]

Highly accurate NTv2 system of the federal state Baden-Wuerttemberg. All Coordinate Reference Systems from Iceland. New Coordinate System NAC-Code. New help topic "WGS84 / ITRS Epochs / Continental Drift". Meridian Convergence, Origin Center Meridian, Geographical Point. Time Zone calculations.

v17.38 [10-28-17]

New Coordinate System NAC-Code, (c) NAC Geographic Products Inc. New help topic WGS84 / ITRS Epochs / Continental Drift. Meridian Convergence, Origin Center Meridian, Geographical Point. New NTv2 for German Federal States Baden-Württemberg and Bavaria. Automatic search for matching NTv2 files.

v17.31 [09-15-17]

Meridian Convergence, Origin Center Meridian, Geographical Point. All CRS of Taiwan. New NTv2 systems for German Federal States Baden-Württemberg and Bavaria. Automatic search for matching NTv2 files. New CRS GDA2020 und ITRS-Epochs of Australia. Support of Polygonal Validity Scopes in NTv2 files.

v17.28 [08-09-17]

Meridian Convergence, Origin Center Meridian, Geographical Point. All CRS of Taiwan. New NTv2 systems for German Federal States Baden-Württemberg and Bavaria. Automatic search for matching NTv2 files. New CRS GDA2020 und ITRS-Epochs of Australia. Support of Polygonal Validity Scopes in NTv2 files.

v17.17 [06-09-17]

All Coordinate- and Reference Systems of Taiwan. New NTv2 systems for German Federal States Baden-Württemberg and Bavaria. Automatic search for matching NTv2 files in a common directory. New Reference System GDA2020 und ITRS-Epochs of Australia. Support of Polygonal Validity Scopes in NTv2 files.

v17.16 [03-28-17]

All Coordinate- and Reference Systems of Taiwan. New NTv2 systems for German Federal States Baden-Württemberg and Bavaria. Automatic search for matching NTv2 files in a common directory. New Reference System GDA2020 und ITRS-Epochs of Australia. Support of Polygonal Validity Scopes in NTv2 files.

v17.11 [03-17-17]

New Reference System GDA2020 und ITRS-Epochs of Australia. ITRS epochs ITRF2008 of 2017 and 2018. NTv2 systems for Berlin, Bavaria and Mecklenburg. Digital signature for secure installation of the DLL. Forward and Backward Transformations. Support of Polygonal Validity Scopes in NTv2 files.

v16.32 [11-06-16]

New CRS of Berlin, Cyprus, Liechtenstein, Switzerland. New S-JTSK systems of Czechia and Slovakia. New CRS of South- and North-Korea and Mauritius. ITRS epochs of EUREF GPS Campaign ITRF2008. Implementation of Forward and Backward Transformations. Support of Polygonal Validity Scopes in NTv2 files.

v16.28 [10-02-16]

CRS of Cyprus, Liechtenstein and Switzerland supplemented. New S-JTSK systems for Czechia and Slovakia. CRS of South- and North-Korea and Mauritius. ITRS epochs of EUREF GPS Campaign ITRF2008. Implementation of Forward and Backward Transformations. Support of Polygonal Validity Scopes in NTv2 files.

v16.24 [07-12-16]

New S-JTSK systems for Czech Rep. and Slovakia. All CRS of South- and North-Korea and Mauritius added. Implemention of Forward and Backward Transformations. Support of Polygonal Validity Scopes in NTv2 files. 93 new Minnesota County coordinate systems. ITRS epochs of EUREF GPS Campaign ITRF2008.

v16.20 [05-18-16]

All CRS of South- and North-Korea added. Implemention of Forward and Backward Transformations. Support of Polygonal Validity Scopes in NTv2 grid files. 93 new Minnesota County coordinate systems. WINDOWS©10 certification and intensive test under WIN10. ITRS epochs of the EUREF GPS Campaign ITRF2008.

v16.19 [04-22-16]

Realisaton of Forward and Backward Transformations. Support of Polygonal Validity Scopes in NTv2 grid files. 93 new Minnesota County coordinate systems. WINDOWS©10 certification and intensive test under WIN10. ITRS epochs of the EUREF GPS Campaign ITRF2008. New functions to determine EPSG parameters

v16.09 [01-29-16]

Support of Polygonal Validity Scopes in NTv2 grid files. 93 new Minnesota County coordinate systems. WINDOWS©10 certification after intensive test. ITRS epochs of the EUREF GPS Campaign ITRF2008. French Lambert CC42 upto CC50 coordinates. New functions to determine EPSG parameters.

v15.21 [10-05-15]

WINDOWS©10 certification. ITRS epochs of the EUREF GPS Campaign ITRF2008. French Lambert CC42 upto CC50 coordinates. New functions to determine EPSG parameters. New functions with point to point calculation. Timezones from coordinates several mile territorial limits.

v15.19 [08-28-15]

French Lambert CC42 upto CC50 coordinates. New functions to determine EPSG parameters. New functions with point to point calculation from distance and bearing. Timezones from coordinates with inclusion of several mile territorial limits. All HARN/HPGN gridfile Reference Systems of the United States.

v15.18 [06-29-15]

New functions to determine EPSG parameters. New functions with point to point calculation from distance and bearing. Timezones from coordinates with inclusion of several mile territorial limits. All HARN/HPGN gridfile Reference Systems of the United States. Visual Studio C/C++ Test-Project.

v15.15 [03-31-15]

New Functions with point to point calculation using bearing and distance. Timezone calculation with optional inclusion or 3, 12, 24 and 200 mile territorial limits. Free NTv2 file of the German Federal State Hamburg. Visual Studio C/C++ Test-Project. EPSG-Codes of the whole world.

v15.10 [03-18-15]

Optional inclusion or 3, 12 and 200 mile territorial limits. Fast timezone calculation with grid file. Free NTv2 file of the German Federal State Hamburg. Visual Studio C/C++ Test-Project. HARN / HPGN Reference Systems for all US states. EPSG-Codes of the whole world completed.

v15.08 [03-14-15]

Fast timezone calculation with grid file. Free NTv2 file of the German Federal State Hamburg. Visual Studio C/C++ Test-Project. New function group with Time Zone Calculations. HARN / HPGN Reference Systems for all US states. EPSG-Codes of the whole world completed.

v15.06 [03-07-15]

Free NTv2 file of the German Federal State Hamburg. Visual Studio C/C++ Test-Project. New Reference Systems for Italy, Ukraine, Netherlands and Mexico. New function group with Time Zone Calculations. HARN / HPGN Reference Systems for all US states. EPSG-Codes of the whole world completed.

v15.05 [03-03-15]

Visual Studio C/C++ Test-Project. New Reference Systems for Italy, Ukraine, Netherlands and Mexico. New function group with Time Zone Calculations. HARN / HPGN Reference Systems for all US states. Coordinate Transformations with any Measurement Units. EPSG-Codes of the whole world completed.

v15.02 [02-27-15]

Visual Studio C/C++ Test-Project. New Reference Systems for Ukraine, Netherlands, Mexico and Italy. New function group with Time Zone Calculations. HARN / HPGN Reference Systems for all US states. Coordinate Transformations with any Measurement Units. EPSG-Codes of the whole world completed.

v15.00 [12-31-14]

Visual Studio C/C++ Test-Project. New Reference Systems for Ukraine, Netherlands, Mexico and Italy. New function group with Time Zone Calculations. HARN / HPGN Reference Systems for all US states. Coordinate Transformations with any Measurement Units. EPSG-Codes of the whole world completed.

v14.79 [11-12-14]

Visual Studio C/C++ Test-Project. New Reference Systems for Ukraine, Netherlands and Italy. New function group with Time Zone Calculations. HARN / HPGN Reference Systems for all US states. Coordinate Transformations with any Measurement Units. EPSG-Codes of the whole world completed.

v14.75 [10-31-14]

New Reference Systems for Netherlands and Italy. New function group with Time Zone Calculations. HARN / HPGN Reference Systems for all US states. Coordinate Transformations with any Measurement Units. EPSG-Codes of the whole world completed. NTv2 transformations for all German Federal States.

v14.70 [10-11-14]

New function group with Time Zone Calculations. All HARN / HPGN Reference Systems of the US with grid files. Input and output of coordinates in any Measurement Units. EPSG-Codes of the whole world completed. All NTv2 transformations for German Federal States.

v14.60 [07-05-14]

Input and output of coordinates in any Measurement Units. EPSG-Codes of the whole world completed. All NTv2 transformations for German Federal States. New function to determine NTv2 file names. Canada completed with many CRS and NTv2 transformations.

v14.43 [05-23-14]

All NTv2 transformations for German Federal States. New function to determine NTv2 file names. Canada completed with many CRS and NTv2 transformations. Two new functions supporting EPSG codes for coorindate transformations. Calculation of Helmert and Molodenski Parameter Sets from identical points.

v14.38 [05-05-14]

New function for the determination of NTv2 file names. Added all CRS of Armenia and Columbia. Canada with many CRS and NTv2 transformations completed. Two new functions supporting EPSG codes for coorindate transformations.Calculation of Helmert and Molodenski Parameter Sets from identical points.

v14.33 [04-28-14]

Canada with many CRS and NTv2 transformations completed. Added all CRS of Columbia. Two new functions supporting EPSG codes for coorindate transformations.Calculation of Helmert and Molodenski Parameter Sets from identical points. ING, BNG und UTMref in several grid mash width.

v13.15 [09-04-13]

New coordinate and reference systems of China. Supports reference systems without datum shift parameters (no defs). Three new functions für enhanced 3D transformations. New projection American Polyconic. Supports INSPIRE, NTv2, BeTA2007, 32/64 bit architecture.

v13.07 [04-10-13]

New projection: American Polyconic. Added all systems of Albania and Brazil (incl. NTv2). New NTv2 grid of Great Britain. New systems of Turkey and the Arabian Peninsula. New systems of India and neighbor states. Supports INSPIRE, NTv2, BeTA2007, 32/64 bit architecture.

v12.26 [03-12-12]

New systems for Morocco, Sweden and Australia. New functions for NTv2 handling and decrypted NTv2 files. New NTv2 grids for many countries.Supports 32bit and 64bit architecture. Supports elevation models CGIAR V2 to V4. Messages can be written to the EventLog. Supports INSPIRE, NTv2, BeTA2007.

v12.06 [09-16-11]

New CRS DHDN Hesse, DB_REF (Deutsche Bahn). Supports 32bit and 64bit architecture. New user defineable projection: Mercator (1SP). New coordinate system: Google Spherical Mercator. Supports elevation models CGIAR V2 to V4. Messages can be written to the EventLog. Supports INSPIRE, NTv2, BeTA2007.

v12.01 [05-03-11]

Supports 32bit and 64bit architecture. Supports elevation models CGIAR V2 to V4. Messages can be written to the EventLog. Systems of Argentina, Mexico and Croatia. Reference systems for GPS measurements in ITRS epochs. Accuracy test: 0.04 mm. Supports INSPIRE, NTv2, BeTA2007.

v11.21 [12-07-10]

New user defineable projection Albers Equal Area Conic. New Albers Systems of USA, Canada, Europe and Africa. Reference system DB_REF of Deutsche Bahn. Reference systems for the calculation of GPS measurements in ITRS epochs. Accuracy test: 0.04 mm difference. Supports INSPIRE©, NTv2, BeTA2007.

v11.20 [11-23-10]

Neue benutzerdefinierbare Projektion Albers Equal Area. Neue Albers Systeme von USA, Kanada, Europa and Afrika. Neues Bezugssystem DB_REF der Deutschen Bahn. Bezugssysteme zur Berechnung von GPS-Messungen in ITRS-Epochen. Genauigkeitstest: 0.04 mm Abweichung. Unterstützt INSPIRE, NTv2, BeTA2007.

v11.19 [09-23-10]

Neues Bezugssystem DB_REF der Deutschen Bahn. Bezugssysteme zur Berechnung von GPS-Messungen in ITRS-Epochen. Genauigkeitstest: 0.04 mm Abweichung. Berücksichtigung der dynamischen Kontinentaldrift zw. WGS84 und ETRS89. Unterstützt INSPIRE, NTv2, BeTA2007.

v11.18 [09-10-10]

Reference systems for the calculation of GPS measurements in ITRS epochs. Accuracy test: 0.04 mm difference. Consideration of the dynamic continental drift between WGS84 and ETRS89. New functions setntvbinautofile() and coordtransex(). Supports INSPIRE©, NTv2, BeTA2007.

v11.15 [06-09-10]

Bezugssysteme zur Berechnung von GPS-Messungen in ITRS-Epochen. Genauigkeitstest: 0.04 mm Abweichung. Berücksichtigung der dynamischen Kontinentaldrift zw. WGS84 und ETRS89. Neue Funktionen setntvbinautofile() u coordtransex(). Unterstützt INSPIRE©, NTv2, BeTA2007.

v11.14 [05-27-10]

Systeme der Arabischen Halbinsel. Genauigkeitstest: 0.04 mm Abweichung. Berücksichtigung der dynamischen Kontinentaldrift zw. WGS84 und ETRS89. Neue Funktionen setntvbinautofile() u coordtransex(). Unterstützt INSPIRE©, NTv2, BeTA2007.

v11.13 [03-19-10]

Berücksichtigung der dynamischen Kontinentaldrift zw. WGS84 und ETRS89. Neue Funktion setntvbinautofile() zur Bereitstellung einer NTv2-Datei in Warteposition. Neue Funktion coordtransex() zur Verarbeitung reduzierter GK- und UTM-Ostwerte. Unterstützung der ETRS89-Koordinatensysteme von INSPIRE©.

v11.12 [03-09-10]

Neue Funktion coordtransex() zur Verarbeitung reduzierter GK- und UTM-Ostwerte. Neue NTv2-Datumsübergänge für Portugal und die Schweiz. Neue Koordinaten- und Bezugssysteme von Neuseeland. Unterstützung der ETRS89-Koordinatensysteme von INSPIRE©. Genauere Formeln für Transversale Mercator-Projektion.

v11.11 [01-19-10]

Neue Funktion coordtransex() zur Verarbeitung reduzierter GK- und UTM-Ostwerte. Neue NTv2-Datumsübergänge für Portugal und die Schweiz. Neue Koordinaten- und Bezugssysteme von Neuseeland. Unterstützung der ETRS89-Koordinatensysteme von INSPIRE©. Genauere Formeln für Transversale Mercator-Projektion.

v11.10 [12-24-09]

Neue Funktion coordtransex() zur Verarbeitung reduzierter GK- und UTM-Ostwerte. Neue NTv2-Datumsübergänge für Portugal und die Schweiz. Neue Koordinaten- und Bezugssysteme von Neuseeland. Unterstützung der ETRS89-Koordinatensysteme von INSPIRE©. Genauere Formeln für Transversale Mercator-Projektion.

v11.03 [11-04-09]

Neue Koordinaten- und Bezugssysteme von Neuseeland. Neue Koordinatensysteme von "INSPIRE©". Genauere Formeln für Transversale Mercator-Projektion. Neue Koordinaten- und Bezugssysteme für die Balkanländer. Verwendung beliebiger NTv2-Dateien für Bezugssystemwechsel.

v11.02 [10-28-09]

Neue Koordinatensysteme von "INSPIRE©". Genauere Formeln für Transversale Mercator-Projektion. Neue Koordinaten- und Bezugssysteme für die Balkanländer. Verwendung beliebiger NTv2-Dateien für Bezugssystemwechsel. Funktionen zur Berechnung der ersten und zweiten geodätischen Hauptaufgaben.

v10.36 [07-13-09]

QTH (Maidenhead) Koordinaten auf 10 Zeichen ergänzt. Verwendung beliebiger NTv2-Dateien für Datumswechsel. Neue Koordinaten- und Bezugssysteme von Israel. Funktionen zur Berechnung der ersten und zweiten geodätischen Hauptaufgaben. Neue Bonne Systeme von Belgien und Portugal.

v10.35 [03-23-09]

Fehler aus Version 10.31 beseitigt. Verwendung beliebiger NTv2-Dateien für Datumswechsel. Neue Koordinaten- und Bezugssysteme von Israel. Funktionen zur Berechnung der ersten und zweiten geodätischen Hauptaufgaben. Neue Bonne Koordinaten- und Bezugssysteme von Belgien und Portugal.

v10.33 [02-26-09]

Neue Koordinaten- und Bezugssysteme von Israel. Funktionen zur Berechnung der ersten und zweiten geodätischen Hauptaufgaben. Neue Bonne Koordinaten- und Bezugssysteme von Belgien und Portugal. Neue Projektionen Bonne und Equidistant Cylindrical (Plate Carrée).

v10.32 [01-08-09]

Funktionen zur Berechnung der ersten und zweiten geodätischen Hauptaufgaben. Neue Bonne Koordinaten- und Bezugssysteme von Belgien und Portugal. Neue Projektionen Bonne und Equidistant Cylindrical (Plate Carrée). Neue Koordinaten- und Bezugssysteme von Vietnam und den französischen Departements.

v10.30 [10-31-08]

Neue Bonne Koordinaten- und Bezugssysteme von Belgien und Portugal. Neue Projektionen Bonne und Equidistant Cylindrical (Plate Carrée). Neue Koordinaten- und Bezugssysteme von Vietnam und den französischen Departements. Neue Koordinaten- und Bezugssysteme von Neuseeland, Uruguay und den Philippinen.

v10.24 [10-04-08]

Neue Koordinaten- und Bezugssysteme von Vietnam und Französisch Polynesien. Neue Koordinaten- und Bezugssysteme von Neuseeland, Uruguay und den Philippinen. Volle Unterstützung des NTv2-Standards vieler Länder. Neue Projektion Equidistant Cylindrical (Plate Carrée).

v10.21 [05-27-08]

Volle Unterstützung des NTv2-Standards. Neues Bezugssysteme BeTA2007, FRANCE, CANADA_0 mit NTv2-Gitterdatei. Neue Projektion Equidistant Cylindrical (Plate Carrée). Neue Koordinaten- und Bezugssysteme der französischen Departements, Jersey und Guernsey.
3D-Koordinatentransformationen.

v10.16 [02-16-08]

Neue Koord. u. Bezugssysteme für Finnland. Neue Koord. u. Bezugssysteme für Belgien. Neue Funktionen für 3D-Koordinatentransformationen. Neue Bezugssysteme DHDN90 / BeTA2007 für alle Deutschen Bundesländer. Neue Funktionen zum Berechnen von Geländehöhen aus Digitalen Höhenmodellen.

v10.01 [02-07-07]

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Predicted future versions and notices:

The doDownload.com constantly monitors the update of all programs, including information from the GeoDLL 19.01 changelog file, however sometimes it can happen that data are not complete or are outdated.We assume that author continue's to develop 19.2 version with further advanced features, and soon you will be informed. Equally important 20.0 upgrades of the program we will continue to monitor. Full GeoDLL description has been compared with the overall software database and our algorithm has found the following applications (are showed below).