The calculation of IEEE 14 Y Bus using the "IEEE14buscdf.txt" file in MatLab, (Power System Analysis Task)

I need to write an mfile which directly opens the text file of IEEEcdf.txt file , then according to "branch datas" in that text file , the program should calculate the Ybus matrix. I mean I want to import a text file into Matlab,then I want to use the datas which are in the text file,but the problem is that there are not only the branch datas but also there are bus data follows datas in it. I should only consider the wanted data, not all of them.