本文主要讨论在MATLAB软件中如何实现C程序源代码的移植。结合"道路平整度指数(IRI)预测问题"的实例,将C语言编写自仿射变换分形插值函数,移植(或改写)到MATLAB中,绘制出宁波机场道路平整度的预测图象,为解决预测问题可视化提供帮助。-This paper mainly discusses the MATLAB software, how to achieve C source code of the transplant. Conjunction with the　road roughness index (IRI) a projection of the　example of C language to self-affine fractal interpolation function transformation, transplantation (or rewritten) to MATLAB, the mapping out of Ningbo airport road roughness prediction image, To address the issue of visual projections to help.