Head/tail-break-based multiscale polyline representation

The codes implement four functional modules including Fourier Descriptor calculation, Head/tail breaks of Fourier Descriptor, Polyline reconstruction; Polyline shape distance computation.The experimental data are polylines of shapefile including coastlines and contours.该代码实现了四大功能模块，涵盖傅里叶描述子（Fourier Descriptor）计算、傅里叶描述子的头尾断裂法处理、多段线（Polyline）重构，以及多段线形状距离计算。实验数据为包含海岸线与等值线的形状文件（shapefile）格式的多段线。