绘制给定数据的波形，跟上次传的那个一样，就是一个CGraph 类，主要是改进了一点算法，修正了一点错误-drawn to the waveform data set, with the last word that the same, which is a CGraph category, the main point is to improve the algorithm, amended 1:00 wrong. .

matlab学习手册，包括基本矩阵算法，信号波形绘制等-matlab learning manuals, including basic matrix algorithm, the signal waveform drawing, etc.