Unified Geodynamics Earth Science Computing Environment

Stable release: iGMT version 1.2

The current source code of iGMT is stable and development is frozen. The last changes to our distribution, igmt_v1.2-20140907.tgz, are indicated by the -something string, "-20080724" meaning changes made on July 24, 2008. If you previously downloaded iGMT 1.2, please also check the known bugs list. Fixes to those problems have been included in the most recent version as listed above.

Our To Do List of future enhancements to iGMT 1.2 (which may not ever happen):

• submit iGMT to the OS X fink package system (help!)
• allow users to modify the iGMT settings in their home directory without installing a new copy of iGMT
• allow user to switch to DD MM.MM N/S annotation style

Implemented improvements from version 1.1 that are in 1.2 include:

Major:

• data handling:
  • contouring grd files supported
  • plotting of vector fields in grd format supported
  • GSHAP seismic hazard data plotting supported
  • world stress map (WSM) plotting added, data in 1997, 2000, and 2005 formats is supported
  • ETOPO2 topography dataset as grd supported
• internal/coding:
  • GMT version 4 supported
  • Improved handling of grdraster/grdcut issues to speed up processing, will also now issue warning if using grdraster to downsample.
  • streamlined naming of variables and improvements in coding: Although not adding any new functionality, we consider these changes the most important since the flexibility and modularity of the iGMT source code should have improved quite a bit. However, the names of all the variables that point to datasets have changed. This means that you will have to modify your igmt_siteconfig.tcl file if you are currently using an older version of iGMT. We have added a NOTES.TXT file where some of these changes are described, otherwise refer to the new and old igmt_config.tcl files.
  • Almost all dataset parameters (including raster data set boundaries etc.) are now set in igmt_configure.tcl (resp. igmt_siteconfig.tcl) for improved handling (see above)
  • img2grd (included in GMT>3.3.6) is included in the distribution and used for extracting img files, if img2grd.c based binary is not available
  • greatly clarified and modularized igmt_plotting.tcl and other sources
  • Moved parameter file to iGMT version 1.2, limited backward compatibility for 1.1 included.
  • iGMT uses GMT 3.4 by default, including psvelo/psmeca instead of psvelomeca. The user can choose to stay with GMT 3.0. please note: some older version of psvelo had bugs, use the newest version

Minor:

• data handling:
  • fixed region issues with -180/180 vs. 0/360, again
  • polygon (line) data plotting facilitated, now closed polygons and simple lines of user-selected width are supported
  • Fixed handling of ETOPO5 grdraster
  • Improved handling of raster data resolution setting
  • Improved handling of map annotations and map scales
  • Added projections, minor bug fixes in the way parameters were calculated for several projections
  • changed seafloor-age plotting limits to account for coverage in the Mueller et al. 1.5 data set
  • corrected geographic position of Reykjavik in the city location data file (please note that some of the positions are still inaccurate).
  • changed the default region of EGM360 geoid and gravity maps, as well as for the sediments to more common -R-180/180/-90/90 and even spacing
  • 'line' is an option for polygon symbols
  • -S and -L have been added to the symbol selection variable, allowing polygons to be drawn
  • added shading option to geoid and custom raster data set
  • added grd2cpt colormap creation support, different schemes if GMT version > 3.2
• internal/coding:
  • The Tcl/Tk color choosing routine only returns RGB values from 0 to 254, it seems. We have our wrapper add 1/1/1, now pure white (254/254/254 --> 255/255/255) can be selected, while black (0/0/0) defaults to 1/1/1, almost pure black.
  • The script readability might have been improved by the addition of extra blank lines.
  • fix of bug that would have Cassini selected instead of custom projection
  • window geometry and placement has been improved
  • fixed plot title handling
  • changed menu button design
  • Supplied a "configure" script which handles the installation settings.
  • corrected typos
  • replaced 'Panic' with 'CANCEL'
  • fixed problem with custom polygon data file menues
  • improved error handling regarding PS to GIF conversion
  • added '-S1' so that img2latlongrd produces reasonable topography again
  • Manual has been rewritten in parts, updated, and (hopefully) clarified a bit. However, it is still a bit sketchy.
  • shading of grd files is off by default and handled properly for all datasets
  • changed to gawk preference
  • two different binary locations for older and newer GMT versions supported
• Manual:
  • Typo in section 4, item 4 corrected.

Old release: iGMT version 1.1

igmt_v1.1.tar.gz, approx. 2.2MB.
Consider using the developer version of iGMT (1.2), since it has many new features and is stable.

Changes from version 1.0 to 1.1

Major:

• GPS velocity vector plotting is now supported using psvelomeca thanks to Simon McClusky of MIT.
• GMT version 3.1 and 3.2 supported, user can choose which GMT version is running.
• The iGMT produced script now uses shell variables so that modifications are easier afterwards.
• Changed parameter file, backward compatibility down to iGMT version 1.0.
• World wide major city data and plotting capability set comes with iGMT 1.1.
• Sediment thickness of Laske & Masters (1997) is supported.
• EGM360 hydrostatically corrected geoid, and freeair gravity are supported

Minor:

• Default geoid file has changed.
• Some grd-files and many URLs have been provided on the iGMT web site.
• iGMT can plot xy data as opposed to only xys data, that is the third column in ASCII format can be omitted for constant size symbols
• Browsing option included for choosing custom xy data files
• river colors can be changed independently
• draw shoreline options appears also as polygon data set
• included a "save as" menu item for the batch file
• included title plotting in the handling of Harvard CMT solutions
• The option to superimpose national boundaries and coast lines is now explicitly mentioned in the polygon data menu.
• Main and minor menus have been reorganized.
• The default ps-viewer is now ghostscript.
• Exit is suppressed when Save-File is cancelled for Save & Quit.
• iGMT checks for write permission in working directory before starting.
• Included small problem fixes as listed in the problems page for iGMT1.0.
• Added "export PWD `pwd`" to the startup script so that the PWD variable always contains the current working directory. (S. Galer)
• Removed the -c option in gmt_helper_create_man_page for improved portability.
• Included a variable for different man page locations.
• Added a menu item to display the postscript manual.
• reference to "which" command was replaced by "whence" for compatibility with Solaris and AIX.

Older release: iGMT version 1.0

igmt_v1.0.tar.gz, approx. 1.7MB.
Version 1.0 was released as the official version on October 02, 1998. Known bugs of iGMT1.0 can be found in the bug list.

Changes from version 0.5 to version 1.0 beta

• Changed the separation distance for volcano name tags
• Better handling of temporary files and .gmtdefaults
• pstext can be used for plotting the title, internal changes in igmt_plotting.tcl.
• More psxy symbols are supported and the GMT logo plotting is handled in a better way.
• Cleaned up weird variable names in igmt_configure and igmt_plotting.tcl. Now adding polygon datasets should be more transparent.
• Added seismicity/Wadati-Benioff zone contours of Gudmundsson and Sambridge.
• Parameter file was extended, no downward compatibility

Legacy: iGMT version 0.5

igmt_v0.5.tar.gz, approx. 1.9 MB.
The first official release of iGMT was version 0.5 of 05/25/98. iGMT was also formerly known as (A)GIS but was renamed to avoid confusion with GIS systems. This version is identical to the final and last version of (A)GIS. The old manual can be downloaded as manual_v0.5.ps.gz or manual_v0.5.pdf.gz.