Install the maptools binary package from the CRAN binary repository.

Install the R GDAL package from the GDAL framework (instructions are included with it). The R.app Package Installer is a handy GUI front-end to the install tools. You should get the latest R binaries (at least 2.3.0), the mini install is sufficient (no C/Fortran for building packages from source). There is a workaround which disables SIP, see Michael Barton’s GRASS page for details. GRASS does not work on OS X 10.11 El Capitan because of the new SIP security. NOTE: Later system version builds will not run properly on earlier systems, but due to limitations of the automated package generation the installer will still let you install it on earlier systems. A few support programs, used by various GRASS modules, are included in the application. GRASS requires an Intel Mac, and runs on Lion and above. The installer does NOT check for the frameworks, so make sure they are installed before trying to run GRASS. GRASS.app 6.4.4-3 (Lion, Mt Lion, Mavericks, …).❗ when updating, for best results drag the existing GRASS application to the Trash before installing the new GRASS. ❗ For GRASS 7 see Michael Barton’s GRASS page.

Download arcmap for mac