how to select SNPs at regular intervals based on their physical positions?


Hi to all
Good Afternoon

I have SNPs table with SNPs their chromosome number and their physical positions. Now i would like to select one SNP at regular interval i.e. one SNP per each Mega basepair. I would like to know are there any R packages or other software to select snps like above or we need to select manually? please share your experience and any help in this regard will be highly appreciated
Thanks in advance

My data looks like this
rs Chr position

rs30012 1 4000000

rs30013 1 6000000

rs30014 1 7000000



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