###################
*bed.parselengths*
###################
breaks up intervals by size

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description
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``bed.parselengths`` separates a bed file based on user-defined size cutoffs.

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usage
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::

  bed.parselengths ( bedfile , brks=c(0,70,140,200) , cores=1 )


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arguments
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===========================      ===============================================================================================================================================================================================================
 Main options                     Description
===========================      ===============================================================================================================================================================================================================
**bedfile**                        string defining bed file name of intervals to be parsed.
**brks**                           numeric vector of fragment size break points used to parse intervals. length of vector must be > 1.
**cores**                          positive integer indicating how many fragment ranges to process simultaneously.
===========================      ===============================================================================================================================================================================================================


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output
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``bed.parselengths`` separates a bed file based on user-defined size cutoffs into different files, the names of which will be returned.

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examples
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break up intervals into three files with interval sizes of 0-50, 51-100, and 101-300 bp
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.. highlight:: r

::

 > bed.parselengths ( "MNase-seq-fragments.bed" , brks = c ( 0 , 50 , 100 , 300 ) )