IDL Geopack DLM Version History
v1.0: Initial release.
v2.0: Implemented Geopack 2005 library.
v2.1: License check removed.
v2.2: T04S model implemented.
v2.3: Removed obsolete Fortran exports in DLL (Windows only).
v2.4: Fortran code recompiled with IVF 9.0 (so far Windows only).
v2.5: Minor fixes.
v2.6: Added routine GEOPACK_HELP and HELP keyword to all routines.
v2.7: Vectorized GEOPACK_TRACE.
v3.0: Project moved to VS2005 and IVF 9.1.
v3.1: Fixed compile warnings.
v3.2: Fixed conversion of input parameters when DEGREE keyword is set.
v3.3: Fixed serious bugs with interface to T96 and T04S models. Created post v4.1.
v4.0: Project moved to IDL 6.3.
v4.1: Fixed serious bugs with interface to T96 and T04S models.
v4.2: Updated help messages and documentation.
v4.3: Recompiled with IVF 9.1 release version and linked against idl.lib from IDL 6.3 release version to ensure compatibility.
v4.4: Geopack May 2006 updates and T01 & TS04 June 2006 updates incorporated. Warning issued when using storm-time T01 model since it is no longer maintained.
v4.5: Changed processing of HELP keyword to show info without invoking GEOPACK_RECALC first.
v4.6: Output array dimensions now identical with input array dimensions.
v4.7: Added NOBOUNDARY keyword to GEOPACK_TRACE for overriding the boundary limits built into the original routine.
v4.8: Added DATE keyword to GEOPACK_RECALC.
v4.9: Increased the maximum number of trace steps in GEOPACK_TRACE from 1000 (Geopack default) to 10000.
v5.0: Minor internal changes to definition of field line elements arrays in GEOPACK_TRACE.
v5.1: Added GEOPACK_GETW for calculation of W parameters used in T04S model.
v5.2: Combined GEOPACK_T01N and GEOPACK_T01S in GEOPACK_T01; the storm-time version of T01 is now invoked using the STORM keyword (remember, the T01_S is now obsolete). Added QUIET keyword to GEOPACK_T01 and GEOPACK_TRACE to suppress "T01_S obsolete" warning. Renamed GEOPACK_T04S to GEOPACK_TS04. Added GEOPACK_GETG routine to calculate G parameters used in T01 and T01_S models.
v5.3: Minor fixes to eliminate compiler warnings under Linux.
v5.4: FLINE keyword in GEOPACK_TRACE returns actual field line points only and is no longer zero-padded.
v5.6: Fixed bug in leap year logic.
v5.7: Output values are returned as scalars if input values are scalars.
v5.8: Removed references to YEAR keyword in routines GEOPACK_DIP and GEOPACK_TRACE from help text and documentation.
v5.9: Added keywords IOPGEN, IOPT, IOPB, and IOPR to routines GEOPACK_TS04 and GEOPACK_TRACE to improve control of TS04 model.
v6.0: Added range check for keywords IOPGEN, IOPT, IOPB, and IOPR.
v6.1: Minor changes to allow compilation on SunOS and Mac OS X (Intel).
v6.2: Fixed bug in GEO to GSE coordinate transformation.
v6.3: Added trace routine with refined foot point location by Vassilis Angelopoulos. Access to routines is provided with keyword REFINE to GEOPACK_TRACE. Tracing to ionosphere or equatorial plane is controlled with keywords IONOSPHERE and EQUATOR, respectively. Other minor fixes and improvements.
v6.4: Added EPOCH keyword to applicable routines to allow internal execution of RECALC during vectorized processing. Added GEOPACK_EPOCH for converting between UTC and EPOCH time formats.
v6.5: Minor bug fixes in GEOPACK_EPOCH.
v6.6: Bug fixes related to EPOCH keyword. Added foot point to field line array in GEOPACK_TRACE.
v6.7: Bug fix for tracing to the equatorial plane with GEOPACK_TRACE /REFINE.
v6.8: Fixed bug in GEOPACK_TRACE /REFINE that resulted in an endless loop if equatorial trace was started at the Earth's surface. Updated help information for external field routines. Added DOY keyword to GEOPACK_EPOCH.
v6.9: Fixed bug in GEOPACK_EPOCH to clean up internal variables when using /BREAKDOWN_EPOCH keyword.
v7.0: Routines using the TILT keyword irreversibly modified the Geopack common block variables PS, SPS, and CPS, requiring GEOPACK_RECALC to be recalled. This has been fixed so that the modifications are temporary and the variables are reset after the routine calls.
v7.1: Increased precision of PI.
v7.2: Updated DGRF/IGRF coefficients for 2005 and added DGRF/IGRF coefficients for 2010.
v7.3: Fixed temporary variable clean-up problem in GEOPACK_EPOCH.
v7.4: Fixed segmentation fault in GEOPACK_RECALC in some Linux OS.
v7.5: Changed disclaimer to refer to "Rules of the Road" in this document.
v7.6: Added GEOPACK_T96_MGNP routine.
v7.7: Fixed rare variable cleanup warning in GEOPACK_EPOCH routine.
v7.8: Fixed rare variable cleanup warning in GEOPACK_EPOCH routine; bug in v7.7.
v7.9: Fixed rare variable cleanup warning in GEOPACK_EPOCH routine; was still buggy in v7.8. Problem does not affect computed values but may cause memory leaks.
v8.0: Increased the maximum allowed array elements from 10,000 to 100,000.
v8.1: Fixed bug when reinitializing model using EPOCH keyword.
v9.0: Major update to include Geopack 2008 version. In addition to providing parallel routines of previously existing routines, new routines exposed through the DLM interface are GEOPACK_SHUETAL_MGNP(_08) and GEOPACK_GEODGEO_08.
v9.1, v9.2: Fixed bug when reinitializing model using EPOCH keyword.
v9.3: Fixed bug in refine trace routine. The bug was introduced in v9.0, earlier versions of the DLM were not affected.
v9.4: Added IGRF 12 (2015) coefficients and extended extrapolation to 2020.
v10.0: Added TS07, TA15B, and TA15N magnetic field models.
v10.1: Added TS07 model to trace routines.
v10.2: Limit default trace distance of TS07 model to X > -30 RE.
v10.3: Bug fixes in TS07 logic.
v10.4: Added TA15 models to GEOPACK_TRACE(_08).
v10.5: Fixed crash in GEOPACK_TRACE(_08) when tracing more than 10000 locations simultaneously.
v10.6: Added IGRF-13 coefficients through 2020 and extrapolation through 2025.
v10.7: Fixed NaNs in GEOPACK_GETB and GEOPACK_GETN.