Index of /goldenPath/hg18/gc5Base
The file: hg18.gc5Base.txt.gz is the raw data used to encode
the gc5Base track on hg18. This file was produced from the hg18.2bit
sequence with the kent source tree utility hgGcPercent thusly:
hgGcPercent -wigOut -doGaps -file=stdout -win=5 hg18 hg18.2bit \
| gzip > hg18.gc5Base.txt.gz
The format of the data is variableStep wiggle data described
at: http://genome.ucsc.edu/goldenPath/help/wiggle.html
with a "span" size of 5 bases. Each value is for a window
size of 5 bases. Thus, possible values are:
0, 20, 40, 60, 80, 100
for a GC count of: 0, 1, 2, 3, 4, 5 respectively.
Note: the chromosome coordinates given are 1-relative coordinates.
The first nucleotide on a chromosome is numbered 1.
Example data from chr10:
variableStep chrom=chr10 span=5
50001 20
50006 60
50011 80
50016 0
... etc ...
Meaning base positions 50,001 through 50,005 have value 20,
base positions 50,006 through 50,010 have value 60, etc ...
Name Last modified Size Description
Parent Directory -
hg18.gc5Base.txt.gz 2007年08月29日 16:00 1.4G