Snaptron Data Directories
-------------------------

These directories contain the raw data 
	and the indices used by Snaptron including:
	Tabix (.tbi), SQLite (.sqlite), and Lucene (directories lucene_*).


The compilation specific data and indices are contained 
	within the sub-directory named by the compilation:

srav1 - ~42M junctions from ~22K samples in the sequence read archive (HG19)
srav2 - ~81M junctions from ~50K samples in the sequence read archive (HG38)
gtex  - ~30M junctions from ~10K samples from the Genotype-Tissue Expression consortium (HG38)
tcga  - ~37M junctions from ~11K samples from The Cancer Genome Atlas (HG38)


Annotation-related files shared by
	multiple compilations and linked from their 
	specific sub-directories are:

gene_annotation_hg19
gene_annotation_hg38

	where the HG19 version is only used
	by SRAv1.  The HG38 version is used by
	the SRAv2, GTEx, and TCGA.


The header for all junction files is (tab-delimited):

junctions.header.tsv


The junctions raw data file is (per-compilation) is:

junctions.bgz

	in block-gzip format (.bgz) which can be read by gzip.


The sample metadata file is (per-compilation):

samples.tsv