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Python bindings for Shapelib |
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============================ |
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These are three python modules for shapelib: |
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shapelib read/write shapefiles |
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dbflib read/write dbf files |
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shptree quadtree for shapes |
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Shapelib is a free software library for reading and writing ESRI shape |
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files and can be found at http://shapelib.maptools.org/. |
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The bindings were partly created with SWIG, a tool that can generate |
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wrappers of C and C++ libraries for a variety of scripting languages. |
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It's homepage is http://www.swig.org. |
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The bindings themselves don't have a homepage at the moment, but the |
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source tarballs/zip files can be downloaded from |
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http://ftp.intevation.de/users/bh/pyshapelib/ |
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Requirements |
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------------ |
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To compile the bindings, you need shapelib 1.2.9 or newer and Python 2.0 |
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or newer. |
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SWIG is not required. The files generated by SWIG are contained in the |
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archive. If you modify shapelib.i or dbflib.i and need to recreate the |
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generated files, you need SWIG 1.3 Alpha 5. It's unlikely that other |
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versions will work. |
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In addition you need to add the following lines to initdbflibc(void) |
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in dbflib_wrap.c. |
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/* because we are in a python module now, we can give out |
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* pointers to python's locale agonistic function |
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* XXX this clearly is a hack |
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*/ |
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DBFSetatof_function(&PyOS_ascii_atof); |
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You also need Python, of course. If you installed prebuilt packages |
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such as RPMs of some Linux distributions, please make sure that the |
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development package is also installed. |
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License |
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------- |
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The shapelib python bindings are covered by the LGPL. See COPYING for |
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more information. |
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Compilation and Installation |
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---------------------------- |
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Pyshapelib uses the python distutils which come with Python 2.0 or newer |
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and are also available separately from python.org for older versions. |
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To compile the bindings, unpack the archive under the shapelib archive |
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or move the directory there if you've already unpacked it. The setup |
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script expects to find the shapelib files in the parent directory. Then |
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run |
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python setup.py build |
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to build the bindings. The result can be found under the (new) build |
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subirectory. |
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To install run |
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python setup.py install |
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which will install the bindings into python's site-packages directory. |
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You can use the intall command's --prefix option to select a different |
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installatin directory. |
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For more information about the setup.py script, invoke it with the |
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--help option: |
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python setup.py --help |
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Documentation |
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------------- |
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There's no real documentation for the python bindings themselves, but |
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there's a simple demo/test script called pytest.py. |
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The change history is recorded in NEWS and in detail in ChangeLog. |
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Contact Information |
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------------------- |
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pyshapelib is currently being developed as part of the interactive |
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viewer for geographic data Thuban, so the best way to reach the |
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developers is to post on the Thuban mailing lists. |
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Thuban: |
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http://thuban.intevation.org/ |
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Thuban mailing lists: |
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http://thuban.intevation.org/mailinglist.html |
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