我有一个类似以下小示例的文本文件:
small example
0,1,2,3,4,5,6
chr1,144566,144597,30,chr1,120000,210000
chr1,154214,154245,34,chr1,120000,210000
chr1,228904,228935,11,chr1,210000,240000
chr1,233265,233297,13,chr1,210000,240000
chr1,233266,233297,58,chr1,210000,240000
chr1,235438,235469,36,chr1,210000,240000
chr1,262