vb写的程序，用于计算高程模型，输入高程后可以检查是否出错，如果你确信你的输入没有错误，可以跳过这一步，直接查看结果-vb written procedures, used to calculate the elevation model, enter the elevation can check for mistakes, if you are convinced that your input is not an error, you can skip this step and dire