Does anyone know how to get the headers for a bam.tdf file converted to a bedgraph file?

Question

[O.rka]

I followed this thread: Conversion from tdf to bed format

Converted like this:

igvtools tdftobedgraph  file.tdf file.bedgraph

Now I have a bedgraph without headers but I have no idea what the last 4 columns correspond to. I believe they are 4 samples but I don't which are which.

chr_1   2808    2809    0.0 1.0 0.0 0.0
chr_1   2809    2810    0.0 1.0 0.0 0.0
chr_1   2810    2811    0.0 1.0 0.0 0.0
chr_1   2811    2812    0.0 1.0 0.0 0.0
chr_1   2812    2813    0.0 1.0 0.0 0.0
chr_1   2813    2814    0.0 1.0 0.0 0.0
chr_1   2814    2815    0.0 1.0 0.0 0.0
chr_1   2815    2816    0.0 1.0 0.0 0.0
chr_1   2816    2817    0.0 1.0 0.0 0.0
chr_1   2817    2818    0.0 1.0 0.0 0.0