###############
5.24 annotateBed
###############
**annotateBed** annotates one BED/VCF/GFF file with the coverage and number of overlaps observed
from multiple other BED/VCF/GFF files. In this way, it allows one to ask to what degree one feature
coincides with multiple other feature types with a single command.

==========================================================================
5.24.1 Usage and option summary
==========================================================================
Usage:
::
  annotateBed [OPTIONS] -i <BED/GFF/VCF> -files FILE1 FILE2 FILE3 ... FILEn
  
  
===========================      ===============================================================================================================================================================================================================
 Option                           Description
 
===========================      ===============================================================================================================================================================================================================
**-namesr**				         A list of names (one per file) to describe each file in -i. These names will be printed as a header line. 
**-counts**					     Report the count of features in each file that overlap -i. Default behavior is to report the fraction of -i covered by each file.
**-both**                        Report the count of features followed by the % coverage for each annotation file. Default is to report solely the fraction of -i covered by each file.
**-s**                           Force strandedness. That is, only include hits in A that overlap B on the same strand. By default, hits are included without respect to strand.
===========================      ===============================================================================================================================================================================================================





==========================================================================
5.24.2 Default behavior - annotate one file with coverage from others.
==========================================================================
By default, the fraction of each feature covered by each annotation file is reported after the complete
feature in the file to be annotated.
::
  cat variants.bed
  chr1 100  200   nasty 1  -
  chr2 500  1000  ugly  2  +
  chr3 1000 5000  big   3  -

  cat genes.bed
  chr1 150  200   geneA 1  +
  chr1 175  250   geneB 2  +
  chr3 0    10000 geneC 3  -

  cat conserve.bed
  chr1 0    10000 cons1 1  +
  chr2 700  10000 cons2 2  -
  chr3 4000 10000 cons3 3  +

  cat known_var.bed
  chr1 0    120   known1   -
  chr1 150  160   known2   -
  chr2 0    10000 known3   +

  annotateBed -i variants.bed -files genes.bed conserv.bed known_var.bed
  chr1 100  200  nasty 1 -  0.500000  1.000000  0.300000
  chr2 500  1000 ugly  2 +  0.000000  0.600000  1.000000
  chr3 1000 5000 big   3 -  1.000000  0.250000  0.000000


==========================================================================
5.24.3 Report the count of hits from the annotation files
==========================================================================
Figure:
::
  annotateBed -counts -i variants.bed -files genes.bed conserv.bed known_var.bed
  chr1 100  200  nasty 1 - 2 1 2
  chr2 500  1000 ugly  2 + 0 1 1
  chr3 1000 5000 big   3 - 1 1 0



==========================================================================
5.24.4 Report both the count of hits and the fraction covered from the annotation files
==========================================================================
Figure:
::
  annotateBed -both -i variants.bed -files genes.bed conserv.bed known_var.bed
  #chr start end  name  score +/-  cnt1 pct1     cnt2 pct2     cnt3 pct3
  chr1 100   200  nasty 1     -    2    0.500000 1    1.000000 2    0.300000
  chr2 500   1000 ugly  2     +    0    0.000000 1    0.600000 1    1.000000
  chr3 1000  5000 big   3     -    1    1.000000 1    0.250000 0    0.000000


  
  
==========================================================================
5.24.5 Restrict the reporting to overlaps on the same strand.
==========================================================================
Note: Compare with the result from 5.24.3
::
  annotateBed -s -i variants.bed -files genes.bed conserv.bed known_var.bed
  chr1  100   200   nasty  var1  -  0.000000  0.000000  0.000000
  chr2  500   1000  ugly   var2  +  0.000000  0.000000  0.000000
  chr3  1000  5000  big    var3  -  1.000000  0.000000  0.000000



