GeoCalc Software Development Kit® (SDK)

Over 12,000 coordinate system objects and methods are supported with basic pre-defined linear and angular units, ellipsoids, geodetic datums, datum transformations both horizontal and vertical, area of use polygons, and coordinate reference systems. Additionally, GeoCalc contains many more advanced geomatic tools such as vertical datums, grid shifts, time-dependent coordinate transformation models (HTDP), VDatum, and the ability to generate custom best-fit transformations and custom coordinate objects of any type. GeoCalc is a geodetic toolbox that allows a software developer to embed advanced or basic coordinate transformation in their application. Blue Marble developer support is available to work closely with you to assist you in leveraging this powerful toolkit to maximum effect.

The GIGS Gold Compliant version of GeoCalc is based on the Oil and Gas Providers (OGP) Geomatics Committee’s requirements outlined in the OGP report 430.

Blue Marble has been a contributor to Geospatial Integrity of Geoscience Software (GIGS) evaluation process since 2006 when its Geographic Calculator and GeoCalc software were selected to be used as a prototype for the development of GIGS. Blue Marble has provided feedback and testing for this process on an on-going basis since and is pleased to reach the first step for completing this process with the certification of its GeoCalc software developer toolkit and underlying library for the Geographic Calculator. Blue Marble’s professional services team is available for certifying any geospatial software that provides coordinate transformation whether through GeoCalc or some other means. Contact us today for more information on how we can help your software become GIGS certified, or if you would like to review our GIGS supporting documentation for GeoCalc.

GeoCalc is equipped with powerful Geoid or Vertical Datum support, including support for NOAA’s VDatum systems. The tool supports over thirty geoid definitions including US, Australian, European, Canadian, Worldwide, and many other locational specific models. Additionally, GeoCalc supports the ability to create custom vertical transformation grid formats giving your users the ability to make their own geoid models. GeoCalc also includes local offset height models for vertical transformations to give users the ability to create custom offsets from geoid definitions. These tools make GeoCalc a uniquely powerful LiDAR processing toolkit enabling highly accurate, true 3-D data transformation support.

GeoCalc is fundamentally a coordinate transformation library, converting coordinates on a point-by-point or database basis as you issue GeoCalc function calls. We have included several useful common coordinate system dialogs to accelerate your development!

Horizontal Time-Dependent Positioning provides a means to predict and adjust for data transformations related to movements of the Earth’s surface over time. HTDP time-dependent shifts are now available through the GeoCalc data source. The latest release includes updating the HTDP implementation to v3.4.2. These are all NOAA-NGS sourced shifts.

The Alberta Township System (ATS) is a surveying system used in parts of Western Canada including Alberta Province. It is a variation of the Dominion Land Survey (DLS). Included is support for Alberta Township System legacy grids, versions 2.1-2.6, 3.1. 3.2 NAD27, 3.2 NAD83, and version 4.1. Your GeoCalc enhanced application can convert between the ATS system and any of our many geodetic or projected coordinate systems.

Updated locking and signing features are available on the Datasource object. Datasource dialogs allow you to move, rename and hide columns. View file classes make it much easier to create your own dialog or organize the standard GeoCalc dialogs. An updated changelog allows for easy visualization of the Audit Trail tool.

• Helpfile integration capabilities
• Display optimization of “Area of Uses” for Transform picker
• Multiselect missing files and download all
• Browse button for file-based path parameters
• New aliasing and filtering capabilities for parameter and method names

• Magnetic declination calculations with support for World Magnetic Model 2020 (WMM2020) and the International Geomagnetic Reference Field 13th generation (IGRF13).
• DataSource search tools to aid in navigating the data source
• New ability to select different methods of interpolation when calculating points from Geoid model grids (Horizontal and Vertical grid transforms)
• You can define your own custom coordinate systems, datum, ellipsoid, and unit parameters
• Define your own custom datums based on Molodensky shifts or seven Bursa/Wolfe datum transformation parameters. GeoCalc also supports NADCON 5, U.S. HARN (enhanced NAD83), DMA Multiple Regression Equation, Canadian National Transformation coordinate transformations, the Molodensky-Badekas 10 Parameter Shift, Ordnance Survey National Grid Transform of 2002, Seven Parameter Helmert Shift, Six Parameter Helmert Shift, Four Parameter Helmert Shift, NTF to RGF93 Grid Shift, and Tokyo to JGD200 Grid Shift
• Forward and inverse geodetic calculations
• Interoperability methods for Coordinate systems, Coordinate Transforms, and the GeoCalc data source. Now GeoTranslate and GeoTransform applications can share a single instance DataSource object.