Deleted:how to calculate gene density from gff file for circos?

Question

[Dr.Animo]

Hi, how to make input data file for circos gene density visualization from gff file like this:

chr start   end value
chr1    1   3000001  39
chr1    3000001 6000001  29
chr1    6000001 9000001   9
chr1    9000001 12000001 10