This is the source distribution for the NCAR/EOL BSpline C++ library.

Background

The BSpline package provides an implementation of a Cubic B-Spline method devised by Vic Ooyama, and brought to our attention by James Franklin. Franklin employed the B-Spline for general purpose filtering in his dropsonde quality control processing program, known as editsonde.

NCAR used Franklin's code, and a paper published by Ooyama, to build this generic B-Spline class library.

Legal

See the COPYRIGHT file in the source distribution.

Requirements

BSpline builds on Windows, Linux and Mac. Here are the build environments for each operating system:

Windows: Microsoft Visual Studio 2005
Linux: scons and g++
Mac: scons and g++ (both provided by Xcode)

BSpline uses the Doxygen documentation system. Doxygen is not required to build BSpline, but if available it can be used to create html documentation.

Organization

BSpline/
- Contains the source code to create a bspline library, and a header file to access the BSpline from your code.
Tests/
- Contains several subdirectories with code for evaluating the code. The C++ directory is the only one that is currently compiled and known to work. The R directory contains code for plotting results using the R statistical langauge. The Fortran directory contains code for some unknown application.
Design/
- Contains notes and and some original Ooyama code.

Building

Linux/Mac

Scons is used to build BSpline.

BSpline is built by running scons in the top directory:

scons

This will create BSpline/libbspline.a and Tests/C++/bspline. The library will contain float and double instantiations of the BSpline templates.

Windows

A Visual Studio solution (bspline.sln) is provided for building the same products.

Documentation

The BSpline code is documented using the Doxygen embedded comments. Run doxygen in the top directory, where it will find the Doxygen configuration file:

doxygen

This will produce html formatted documentation in the doc/ directory. Open doc/index.html with your favorite browser.

The generated documentation is also committed to the GitHub Pages for this project, so it can be viewed online:

http://ncar.github.io/bspline/

Here are the steps to update the documentation in GitHub pages from the source tree:

In a clone of the bspline project, clone it again into a doc directory:

cd bspline

git clone git@github.com:NCAR/bspline.git doc

Checkout the gh-pages branch in the doc subdirectory.

cd doc

git checkout origin/gh-pages -b gh-pages

Generate the doxygen output into the doc directory:

cd ..

scons doc

Commit the changes to the gh-pages branch:

cd doc

git commit -a -m'generated updated documentation'