计算质心坐标(c)与边界与质心间的距离r(i)，并绘制theta 与r_histogram 的关系曲线图-Calculating the centroid coordinates (c) between the boundary and the centroid distance r (i), and the mapping relationship between theta and r_histogram graph

用C#实现了绘制直方图，饼图和曲线图，单数据直方图取最前两列，第一列为横轴每列名称，第二列为值。-Using C# to achieve a draw histograms, pie charts and graphs, histograms single data before taking the two, the first name of each column as the horizontal axis, and the second as a value.