isodata 迭代自组织的数据分析，BP神经网络用于函数拟合与模式识别，应用小区域方差对比，程序简单，包括数据分析、绘图等等,包括最小二乘法、SVM、神经网络、1_k近邻法,三相光伏逆变并网的仿真。- Isodata iterative self-organizing data analysis, BP neural network function fitting and pattern recognition, Application of small area variance comparison, simple procedures, Data analysis, plotting, etc., Including the least squares method, the SVM, neural networks, 1 _k neighbor method, Three-phase photovoltaic inverter and network simulation.