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== Signatures ==
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file (watermask, 10x10 degrees, 250m resolution): /home/zmaw/m300036/PythonSeminar/watermask/MOD44W.A2000055.h18v04.005.2009212173853.hdf
pure python script: /home/zmaw/m300036/PythonSeminar/watermask/resize_pure_python.py
python-fortran script: /home/zmaw/m300036/PythonSeminar/watermask/resize_watermask.py
file (watermask, 10x10 degrees, 250m resolution): {{{/home/zmaw/m300036/PythonSeminar/watermask/MOD44W.A2000055.h18v04.005.2009212173853.hdf}}}


Real world example: moving window averaging

 * Fortran code: [[ /ArStats | code ]]
 * Python code: [[/ResizeWaterMaskPython | code]]
 * Fortran+Python: [[ /ResizeWaterMaskFortran | code]]

F2PY

Contents

  1. "Hello world"
  2. Compare pure Python and Python+Fortran

A tool that provides connection between Python and Fortran languages Official website

Advanced examples how to use f2py 

Type:

f2py # to see the usage options
f2py -c --help-fcompiler # to see what local fortran compilers does f2py recognize

f2py wraps Fortran code and allows to use it as a Python module.

"Hello world"

C File hello_world.f
      subroutine foo (a)
      integer a
      print*, "Hello from Fortran!"
      print*, "a=",a
      end

Compile: 

f2py -c -m hello hello.f --fcompiler=gfortran

Try it in Python: 

import hello
print hello.__doc__
hello.foo(4)

Compare pure Python and Python+Fortran

file (watermask, 10x10 degrees, 250m resolution): /home/zmaw/m300036/PythonSeminar/watermask/MOD44W.A2000055.h18v04.005.2009212173853.hdf

Real world example: moving window averaging

LehreWiki: PythonCourse/PythonLES/F2Py (last edited 2012-12-06 09:23:18 by MikhailItkin)