Mac OS X Mountain Lion, Octave can not execute sombrero()

[Bobi Pu]

Hi, 

I am mac user, and a USC graduate. I am currently taking a Machine Learning course, and this course recommends using Octave to solve problems.  I followed the instruction(http://wiki.octave.org/Installing_MacOS_X_Bundle) to install Octave on my macbook(10.8.1) .

But unfortunately, when I test sombrero () function, the terminal shows:

octave-3.4.0:1> sombrero 

dyld: Library not loaded: /opt/X11/lib/libfreetype.6.dylib

  Referenced from: /usr/X11/lib/libfontconfig.1.dylib

  Reason: Incompatible library version: libfontconfig.1.dylib requires version 15.0.0 or later, but libfreetype.6.dylib provides version 13.0.0

dyld: Library not loaded: /opt/X11/lib/libfreetype.6.dylib

  Referenced from: /usr/X11/lib/libfontconfig.1.dylib

  Reason: Incompatible library version: libfontconfig.1.dylib requires version 15.0.0 or later, but libfreetype.6.dylib provides version 13.0.0

/Applications/Gnuplot.app/Contents/Resources/bin/gnuplot: line 71:  4296 Trace/BPT trap: 5       GNUTERM="${GNUTERM}" GNUPLOT_HOME="${GNUPLOT_HOME}" PATH="${PATH}" DYLD_LIBRARY_PATH="${DYLD_LIBRARY_PATH}" HOME="${HOME}" GNUHELP="${GNUHELP}" DYLD_FRAMEWORK_PATH="${DYLD_FRAMEWORK_PATH}" GNUPLOT_PS_DIR="${GNUPLOT_PS_DIR}" DISPLAY="${DISPLAY}" GNUPLOT_DRIVER_DIR="${GNUPLOT_DRIVER_DIR}" "${ROOT}/bin/gnuplot-4.4.3" "$@"

/Applications/Gnuplot.app/Contents/Resources/bin/gnuplot: line 71:  4301 Trace/BPT trap: 5       GNUTERM="${GNUTERM}" GNUPLOT_HOME="${GNUPLOT_HOME}" PATH="${PATH}" DYLD_LIBRARY_PATH="${DYLD_LIBRARY_PATH}" HOME="${HOME}" GNUHELP="${GNUHELP}" DYLD_FRAMEWORK_PATH="${DYLD_FRAMEWORK_PATH}" GNUPLOT_PS_DIR="${GNUPLOT_PS_DIR}" DISPLAY="${DISPLAY}" GNUPLOT_DRIVER_DIR="${GNUPLOT_DRIVER_DIR}" "${ROOT}/bin/gnuplot-4.4.3" "$@"

warning: broken pipe -- some output may be lost

warning: broken pipe -- some output may be lost

warning: broken pipe -- some output may be lost

warning: broken pipe -- some output may be lost

warning: broken pipe -- some output may be lost

warning: broken pipe -- some output may be lost

warning: broken pipe -- some output may be lost

and can not draw the graph. By the way,  my mac's PATH does include"/usr/bin" and "/usr/local/bin". 

If I add "export GNUTERM=x11" in ~./bash_profile(I've already installed XQuartz), the result is the same: Octave still failed to draw that graph and showed "broken pipe" warning.

So, can you help to fix this problem? Thank you very much~