Installation Instructions for iGMT 1.2 This is an excerpt from the manual, manual.ps For additional information, refer to our website www.seismology.harvard.edu/~becker/igmt Installation and configuration To get iGMT running, extract the distribution igmt_v1.2.tar.gz (or, alternatively, its slim version igmt_v1.2_wo.tar.gz) -if you have not already done so- in a directory where you typically store Tcl/Tk scripts. This could well be at the single user level on multi-user systems (non-root priveliges installation) since the package itself is relatively small. Installing multiple copies would allow every user to modify the iGMT code themselves. From here, you can either choose to use the script configure_script which we provide or proceed to do a few changes manually. If you choose the "automatic" way, you will have to enter the iGMT directory that you just created by expanding the tar-file and type ./configure_script. After answering a couple of questions, you should be all set. If, on the other hand, you would like to stay in control simply check the following three steps: 1. An environment variable \$igmt_root can be set to point to the directory where iGMT resides. With csh this would be done by adding a line like setenv igmt_root $HOME/tcltk/igmt_dir/ to the $HOME/.login file. For ksh you would add export igmt_root=$HOME/tcltk/igmt_dir/ to the .profile file. Alternatively, you will have to modify the main iGMT script (startup script file) igmt and change line 39 to point to the root directory. 2. The igmt script calls the Tcl/Tk shell wish using the explicit call to /usr/bin/wish in line 75. If wish is somewhere else on your system (try typing which wish or type which), either change the corresponding line in igmt or set the another environment variable $wish_cmd. After verifying the settings, igmt should be executable and iGMT can be started by typing $igmt_root/igmt at the command line. (Of course this can be facilitated by adding an alias or linking $igmt_root/igmt to some place where your shell looks for executables.) 3. NEW: iGMT needs to know where the GMT binaries are located. In a similar fashion as above for wish, find out where that is (say, in /usr/local/bin) and add a line like set gmtbins /usr/local/bin to your igmt_siteconfig.tcl file that holds all the necessary modifications to get iGMT running in your environment.