Killet Software Ing.-GbR - short: KilletSoft - is a software company, which was established in the year 1991. The society is divided into the ranges "Geodetic Standard Software", "Development Tools for Geoinformatics" and "International Geodata". The industrial sectors of emphasis of the companies supplied by KilletSoft are consulting engineers, GIS developers, Internet marketing, public utilities, logistics, telecommunications, security and public services.
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Development of Geodetic Software

The GeoDLL Geodetic Software Development Kit (SDK) is an easy to use function library which is designed particular for GIS professionals and software developers. GeoDLL allows developers to embed the therein contained sophisticated and precise coordinate transformations into their custom geospatial software. Additionally GeoDLL contains many more advanced geomatic tools such as generating Helmert and Molodenski Parameters, NTv2 and HARN grid shifts, INSPIRE- and EPSG support, Digital Elevation Models (DEM), Distance and Time Zone calculations, and the ability to use custom best fit transformation parameters. GeoDLL has grown with many improvements over the years and it continuously benefits from user feedback. Thanks to the numerous improvement suggestions of the users the quality and the functionality of the Development Kit increase constantly.

GeoDLL supports the development of geodetic software on various platforms by providing geodetic functions. The operating system WINDOWS provides software developers the opportunity to use prepared functions of third-parties in their own software applications. Thus, geodetic functions of GeoDLL can be linked to programs written in C, C++, C#, Java, Delphi, MS-Access, Visual Basic, Visual Objects or which are written in other programming languages. To support the GeoDLL, examples and interfaces with source code for many commonly used programming languages are provided.

GeoDLL comes with extensive documentation and is supplied as DLL file for 32bit and 64bit architectures or as C++ source code. The DLL works with most programming languages and it can be used with Microsoft Office programs. The DLL is written in C++ and was developed with Microsoft Visual Studio. Thus very fast performance, compact code and high stability are assured. The functions of GeoDLL are prepared for multithreading.

Main Task: Coordinate Transformations

The most important application of GeoDLL is to include professional Coordinate Transformations in own programs. These Coordinate and Reference Systems are supported:

  1. The current and historical Systems of all countries of the European Union (EU)
  2. The coordinate reference systems of the European non-EU countries
  3. The European ETRS89 systems forced by INSPIRE
  4. The US and Canadian NTv2, HARN and SPCS Coordinate Reference Systems
  5. The Coordinate Reference Systems of most countries of all continents
  6. The Coordinate Reference Systems of Austria and Switzerland incl. NTv2
  7. The Coordinate Reference Systems of the old and new German Federal States
  8. The German 'Lagestatus' Coordinate Reference Systems
  9. The special Reference Systems of the German Federal States
  10. The German NTv2 Reference System BeTA2007
  11. The 40 Soldner Coordinate Systems of the Prussian Land Registers
  12. The Geographic coordinates in different notations and Cartesian coordinates
  13. World-wide NTv2 gridfile supported Coordinate Transformations
  14. World-wide used numeric and alphanumeric Coordinate Systems
  15. ITRS annual realizations or WGS84 epochs for GPS measurements
  16. WGS84 Coordinate Transformations in consideration of the continental drift
  17. User defined Coordinate Systems, Reference Systems and earth ellipsoids

Coordinate Transformation Scheme

Coordinate Transformation Scheme

Function groups

The geodetic functions of the GeoDLL are summarized in function groups for specific tasks, which can be separately licensed and purchased. At the top of this site all function groups are listed as further links.

Function descriptions

You can view the detailled descriptions of all GeoDLL functions in the  Online User Manual. Detailed description of all geodetic functions in an English and German language MS-help documentation and a runnable test version of GeoDLL are contained in the  download file.

Scope of services of the function groups

The characteristics of the various functional groups and the contained functions are listed under further links at the top of this site.

  1. Source and target Coordinate Reference Systems
  2. World-wide and country-specific Coordinate Reference Systems
  3. Current and historical Coordinate Reference Systems
  4. Numeric and alphanumeric Coordinate Systemsv
  5. UTMRef, GEOREF, QTH, BNG und ING with different grid mesh sizes
  6. INSPIRE systems, ITRS annual realizations, WGS84 epochs, GPS coordinates
  7. 2D and 3D Coordinate Transformations
  8. Use of EPSG codes of the Coordinate Reference Systems
  9. Selection of the meridian strip with UTM and Gauss-Krueger coordinates
  10. UTM and Gauss-Krueger coordinates with and without meridian strip number
  11. Use of measurement units
  12. Monitoring of range limits
  13. Option for the automatic assignment of a Reference System to the Coordinate System
  14. Calculation of Helmert and Molodenski Parameter Sets from identical points
  1. Quality
  2. Strict formulas of Schatz, Schuhr, Klotz and Hooijberg
  3. Transformation parameters of the Surveying Authorities of the respective countries
  4. Consideration of the EPSG specifications
  5. Helmert Seven Parameter Bursa-Wolf and Molodenski Reference System Transitions
  6. Exact NTv2 transformations for many countries
  7. High-precision NTv2 transformations for the German Federal States
  1. Special features
  2. 32bit and 64bit architecture
  3. Network capability
  4. Multithreading capability
  5. Server capacity
  6. CITRIX support
  7. EventLog handling
  1. Help System
  2. Detailed electronic manual
  3. Uniformly geodetic terms in all text outputs and in the electronic manual
  4. Explanation of geodetic terms in the glossary
  5. Online FAQ section for common questions
  6. Detailed list with predefined Coordinate Reference Systems
  7. Coordinate Systems and Reference Systems in the list have numerical GeoDLL keys
  8. Hierarchical structure of the list by continent, country, Coordinate System, Reference System
  9. Additional alphabetic list
  1. Multilingualism
  2. Text outputs in English and German
  3. User manual in English and German
  1. Application Program Interfaces and Sample Programs
  2. Sample of a C++ interface
  3. Sample of a Visual Basic interface
  4. Sample of a Delphi interface
  5. Sample of a Visual Objects interface
  6. Sample of a C# interface (NET Framework)
  7. Sample program in C++
  8. Sample program in Visual Objects
  9. Sample of a function call in C++ syntax
  10. Sample of a function call in Visual Basic syntax
  1. More possibilities
  2. Possibility to download NTv2 files from the KilletSoft website
  3. Configuration of user defined Coordinate Systems
  4. Configuration of user defined Reference Systems and ellipsoids
  5. Possibility of a service contract for phone and email support
  6. Possibility to use the automated newsletter service via email
  7. Transfer of transformation parameter sets from the SEVENPAR program

Dynamic Link Library (DLL)

The operating system WINDOWS provides software developers the opportunity to use prepared functions of third-parties in their own software applications. Thus, geodetic functions of GeoDLL can be linked to programs written in C, C++, C#, Java, Delphi, MS-Access, Visual Basic, Visual Objects or which are written in other programming languages. To support the GeoDLL, examples and interfaces with source code for many commonly used programming languages are provided. An example of using GeoDLL is the program  TRANSDAT that is available for download on the internet.

Memory model

GeoDLL is delivered for WINDOWS operating systems with 32bit and 64bit architecture. Therefore, the DLL can be used with win32 applications on 32bit and 64bit WINDOWS operating systems and with x64 applications on 64bit WINDOWS operating systems.

C++ Source Code

Frequently we got inquiries whether the geodetic functions are also available for other operating systems like LINUX or UNIX. Also some developers would not like to build functionality without knowledge of the source code into their programs. For this reasons we decided to offer the geodetic functions as source code. The functions contained in GeoDLL can be acquired completely as C++ source code. The source is extensively written in ANSI-C++, so that the migration to arbitrary operating systems and hardware platforms is possible with minor modifications.

Coordinate and Reference Systems

All the  Coordinate and Reference Systems, supported by GeoDLL, sorted on continents and countries with additional information are put together on a separate internet page.

NTv2 support

Exact datum shifts in local systems are possible by supporting the  NTv2 standard with gridfiles.

Digital Elevation Models

GeoDLL supports the Digital Elevation Models CGIAR and GLOBE (3 and 30 second rasters) for the point-exact determination of ground elevations over the Mean Sea level. Detailed information about the use of the  Digital Elevation Models are arranged on a separate internet page.

Calculation accuracy

GeoDLL uses Coordinate Transformation formulas based upon EPSG specifications and publications by Schatz, Schuhr and Klotz and Hooijberg. Algorithms used for country-specific transformations are either published or made directly available by the Measurement Authorities of the respective countries or by similar respectable institutions. To achieve the highest precision only strong formula algorithms are used for calculations.

Coordinate Transformations without changing the geodetic Reference System have extremely high precision ranging within millimeters. A good example of geographic coordinates transformations between Gauß-Kruger and UTM Coordinate Systems made with GeoDLL are the results published by the North-Rhine Westphalia Land Survey Commission. It was confirmed that the differences were within the lower millimeter range.

For a statement about the accuracy were comparative calculations realized with a set of test data of the "Arbeitsgemeinschaft der Vermessungsverwaltungen der Länder der Bundesrepublik Deutschland" (ADV). It was confirmed that the differences were less then a millimeter. Please read the  test report.

Performance

GeoDLL is written in the programming language C++ and developed on Microsoft Visual Studio 2010. Thus very fast performance, compact code and high running stability are assured. The functions of GeoDLL are multithreading ready and so it supports Multi Core processors.

Defination files, Interface sources, Example sources

GeoDLL already contains some ready to use interfaces and defination files for integration of geodetic functions into the programming language of your choice. Also some example sources in different programming languages are present. The source codes listed here are provided in the download file.

  1. Linkable import library file for the programming languages C / C++ in 32bit architecture
  2. Linkable definition file for the programming languages C / C++ in 32bit architecture
  3. Linkable function declarations for the programming languages C / C++ in 32bit architecture
  4. Linkable import library file for the programming languages C / C++ in 64bit architecture
  5. Linkable definition file for the programming languages C / C++ in 64bit architecture
  6. Linkable function declarations for the programming languages C / C++ in 64bit architecture
  7. Linkable import library file for the programming language Visual Objects
  8. Template of Visual Studio C/C++ Project ( download)
  9. Example of C++ interface
  10. Example of Visual Basic interface
  11. Example of Delphi interface
  12. Example of Visual Objects interface
  13. Example of C#-interface (NET Framework)
  14. Sample program in C++
  15. Sample program in Visual Objects

Test version / Full version

GeoDLL is available for download from this site as a test version (shareware). All DLL functions can be used without restrictions for a limited period of time. That is enough for testing and determining whether the GeoDLL functions run with your application. You can lift time limitations by entering the unlock codes you can obtain from KilletSoft GbR for each of the above listed function groups. The unlock codes are passed to the DLL-function setunlockcode(<unlock key>,<user ID>) from your application. Then all subsequent calls to the functions of the unlocked group will have no more time limitations.

License models

The  license models described here require only a unique payment. No additional payments are raised as a function of the number of customer installations or on the service life of the license. The unlock code provides you with the right of using the functions of the unlocked group. Several licensing models are available:

  1. Single license: A Single function group license entitles the license holder to use the functions of a Geodetic Function Group with a single software application developed by the license holder. Applications developed by the license holder using the geodetic functions of a group, can be distributed to any number of customers or can be installed as a single application on the Internet server of the license holder, or the server of the license holder's Internet service provider.
  2. General license: A General function group license entitles the license holder to use the functions or a Geodetic Function Group with any number of applications developed by the license holder. Applications developed by the license holder using the geodetic functions of a group can be distributed to any number of customers and can be installed on multiple Internet servers of the license holder or the license holder's Internet service provider.
  3. Internal license: An Internal License entitles the licensee to use the functions or a Geodetic Function Group with any number of applications developed by the licensee. Applications developed by the licensee using the geodetic functions of a group may not be distributed to customers and may not be installed on an Internet server. Applications created with this license must be in context with tasks of research and education.

Pricing and ordering

Available selective licensing of several function groups guaranties that you only pay for those functions that you intend to use. Pricing and ordering information can be found in the  Price list. Order the for GeoDLL function groups with the electronic  Order Form.

Download of the test version

The test version of the Dynamic Link Library GeoDLL with a detailed description and with informations about the use of the functions can be  downloaded as ZIP packed file by the Internet. For unpacking the download file you need an unzip program, which you can download  from this side.

KilletSoft News In order that you always are well informed about our company, we write actual news, current information and special offers here into this column.

KilletSoft Logo Anniversary
 
Good service pays off - 25 years Geo Software by KilletSoft!
Read more...

KilletSoft Logo Updates
 
The period, in which you can use free updates of our programs, has been extended!
Read more...

KilletSoft Logo Innovation Award 2016
 
Award 2016 KilletSoft's geodetic software has won for the second year in succession the Innovation Award from the Initiative Small and Medium Enterprises.
Certificate TRANSDAT...
Certificate ORTWIN...
Read the Press Release...

KilletSoft Logo GeoDLL / TRANSDAT
 
Proposal for using Polygonal Validity Scopes in NTv2 grid files.
Read the White Paper...

KilletSoft Logo WINDOWS© 10 compatible
 
Win10 kompatibel Our software has got the certificate "WINDOWS© 10 compatible". So it complies with the compatibility standards of the Microsoft operating systems WINDOWS© 10.

KilletSoft Logo NTv2 Hamburg
 
Highly accurate NTv2 file of the Federal State of Hamburg free of charge for TRANSDAT and GeoDLL users.
Download the NTv2 file ...
Read the Press Release...

KilletSoft Logo GeoDLL
 
GeoDLL provides Time Zone Calculations with aspect to Maritime Territorial Limits.
Read the Press Release...

KilletSoft Logo TRANSDAT / GeoDLL
 
The program and the DLL now support all HARN / HPGN Reference Systems of the United States.
Read more...

KilletSoft Logo Translators wanted!
 
The latest versions of the programs TRANSDAT and SEVENPAR support language files for the programs interface. Since the language dependent texts are managed in external files, new languages can be added at any time by creating new language files. Every user of the program now can compile language files for himself and our customers.