Cool. That makes sense. Cheers

There are 24 chromosomes I'm interested in in the file with the total number of records (ranges) per chromosome as follows:

chr1 2235512
chr2 674652
chr3 348269
chr4 323500
chr5 308100
chr6 338158
chr7 280734
chr8 253229
chr9 224412
chr10 237524
chr11 240186
chr12 250300
chr13 161894
chr14 160126
chr15 152561
chr16 170145
chr17 167623
chr18 126566
chr19 134123
chr20 123693
chr21 61077
chr22 75260
chrX 265561
chrY 43169

[download]

The length of the ranges are usually between about 10-300.

Does this help?

In reply to Re^4: Reducing memory footprint when doing a lookup of millions of coordinates by richardwfrancis
in thread Reducing memory footprint when doing a lookup of millions of coordinates by richardwfrancis

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