把二维数组数据从外部文本文件导入labview中，并实现对导入数据的按列提取，将提取后的几组数据组成新的几个二维数组显示出来，并显示其图形-The two-dimensional array of data from external text file into labview, and the realization of the import data extracted by the column, the extraction of several sets of data after