The bigMethyl format allows display of methylation sites.
The bigMethyl format is line-oriented. BigMethyl data are preceded by a track definition line, which adds a number of options for controlling the default display of this track.
Following the track definition line are the track data in 18 column BED format:
chromA chromStartA chromEndA dataValueA
chromB chromStartB chromEndB dataValueB
All options are placed in a single line separated by spaces:
track type=bigMethyl name=track_label description=center_label
Note: if you copy/paste the above example, you must remove the line breaks.
The track type is REQUIRED, and must be bigMethyl:
type=bigMethyl
BigMethyl track data values can be integer or real, positive or negative values. The chromosome coordinates are zero-based, half-open. This means that the first chromosome position is 0, and the last position in a chromosome of length N would be N - 1. The positions listed in the input data must be in numerical order, and only the specified positions will be graphed. bigMethyl format has eighteen columns of data:
chrom chromStart chromEnd dataValue
Note:
The above example is a custom track that includes a track type= line that is
specific for loading the data in the browser. This line will cause a raw bigMethyl data file to fail
validation by other tools, such as validateFiles, outside of the browser.