Export in LSF and in "Detail CSV" format with 1Kpt taken using the scope calibrator. Convert the LSF to hex, decimal and character format with the Unix utility, od(1). Write a C program to read the things you can identify and go from there. The MATLAB code will give some clues, but IIRC it was a it obtuse.
I have a couple of GDS-2000E series scopes. Writing a file convertor was on my to do list, but I've decided to just work on writing FOSS FW for them. I just need a few days without interruption to get started learning Zynq FPGA programming.