Mercurial > repos > devteam > get_flanks
diff get_flanks.py @ 0:0c66884f0cac
Imported from capsule None
| author | devteam |
|---|---|
| date | Tue, 01 Apr 2014 09:12:39 -0400 |
| parents | |
| children | 2fdec558c935 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/get_flanks.py Tue Apr 01 09:12:39 2014 -0400 @@ -0,0 +1,189 @@ +#!/usr/bin/env python +#Done by: Guru + +""" +Get Flanking regions. + +usage: %prog input out_file size direction region + -l, --cols=N,N,N,N: Columns for chrom, start, end, strand in file + -o, --off=N: Offset +""" + +import sys, re, os +from bx.cookbook import doc_optparse +from galaxy.tools.util.galaxyops import * + +def stop_err( msg ): + sys.stderr.write( msg ) + sys.exit() + +def main(): + try: + if int( sys.argv[3] ) < 0: + raise Exception + except: + stop_err( "Length of flanking region(s) must be a non-negative integer." ) + + # Parsing Command Line here + options, args = doc_optparse.parse( __doc__ ) + try: + chr_col_1, start_col_1, end_col_1, strand_col_1 = parse_cols_arg( options.cols ) + inp_file, out_file, size, direction, region = args + if strand_col_1 <= 0: + strand = "+" #if strand is not defined, default it to + + except: + stop_err( "Metadata issue, correct the metadata attributes by clicking on the pencil icon in the history item." ) + try: + offset = int(options.off) + size = int(size) + except: + stop_err( "Invalid offset or length entered. Try again by entering valid integer values." ) + + fo = open(out_file,'w') + + skipped_lines = 0 + first_invalid_line = 0 + invalid_line = None + elems = [] + j=0 + for i, line in enumerate( file( inp_file ) ): + line = line.strip() + if line and (not line.startswith( '#' )) and line != '': + j+=1 + try: + elems = line.split('\t') + #if the start and/or end columns are not numbers, skip that line. + assert int(elems[start_col_1]) + assert int(elems[end_col_1]) + if strand_col_1 != -1: + strand = elems[strand_col_1] + #if the stand value is not + or -, skip that line. + assert strand in ['+', '-'] + if direction == 'Upstream': + if strand == '+': + if region == 'end': + elems[end_col_1] = str(int(elems[end_col_1]) + offset) + elems[start_col_1] = str( int(elems[end_col_1]) - size ) + else: + elems[end_col_1] = str(int(elems[start_col_1]) + offset) + elems[start_col_1] = str( int(elems[end_col_1]) - size ) + elif strand == '-': + if region == 'end': + elems[start_col_1] = str(int(elems[start_col_1]) - offset) + elems[end_col_1] = str(int(elems[start_col_1]) + size) + else: + elems[start_col_1] = str(int(elems[end_col_1]) - offset) + elems[end_col_1] = str(int(elems[start_col_1]) + size) + assert int(elems[start_col_1]) > 0 and int(elems[end_col_1]) > 0 + fo.write( "%s\n" % '\t'.join( elems ) ) + + elif direction == 'Downstream': + if strand == '-': + if region == 'start': + elems[end_col_1] = str(int(elems[end_col_1]) - offset) + elems[start_col_1] = str( int(elems[end_col_1]) - size ) + else: + elems[end_col_1] = str(int(elems[start_col_1]) - offset) + elems[start_col_1] = str( int(elems[end_col_1]) - size ) + elif strand == '+': + if region == 'start': + elems[start_col_1] = str(int(elems[start_col_1]) + offset) + elems[end_col_1] = str(int(elems[start_col_1]) + size) + else: + elems[start_col_1] = str(int(elems[end_col_1]) + offset) + elems[end_col_1] = str(int(elems[start_col_1]) + size) + assert int(elems[start_col_1]) > 0 and int(elems[end_col_1]) > 0 + fo.write( "%s\n" % '\t'.join( elems ) ) + + elif direction == 'Both': + if strand == '-': + if region == 'start': + start = str(int(elems[end_col_1]) - offset) + end1 = str(int(start) + size) + end2 = str(int(start) - size) + elems[start_col_1]=start + elems[end_col_1]=end1 + assert int(elems[start_col_1]) > 0 and int(elems[end_col_1]) > 0 + fo.write( "%s\n" % '\t'.join( elems ) ) + elems[start_col_1]=end2 + elems[end_col_1]=start + assert int(elems[start_col_1]) > 0 and int(elems[end_col_1]) > 0 + fo.write( "%s\n" % '\t'.join( elems ) ) + elif region == 'end': + start = str(int(elems[start_col_1]) - offset) + end1 = str(int(start) + size) + end2 = str(int(start) - size) + elems[start_col_1]=start + elems[end_col_1]=end1 + assert int(elems[start_col_1]) > 0 and int(elems[end_col_1]) > 0 + fo.write( "%s\n" % '\t'.join( elems ) ) + elems[start_col_1]=end2 + elems[end_col_1]=start + assert int(elems[start_col_1]) > 0 and int(elems[end_col_1]) > 0 + fo.write( "%s\n" % '\t'.join( elems ) ) + else: + start1 = str(int(elems[end_col_1]) - offset) + end1 = str(int(start1) + size) + start2 = str(int(elems[start_col_1]) - offset) + end2 = str(int(start2) - size) + elems[start_col_1]=start1 + elems[end_col_1]=end1 + assert int(elems[start_col_1]) > 0 and int(elems[end_col_1]) > 0 + fo.write( "%s\n" % '\t'.join( elems ) ) + elems[start_col_1]=end2 + elems[end_col_1]=start2 + assert int(elems[start_col_1]) > 0 and int(elems[end_col_1]) > 0 + fo.write( "%s\n" % '\t'.join( elems ) ) + elif strand == '+': + if region == 'start': + start = str(int(elems[start_col_1]) + offset) + end1 = str(int(start) - size) + end2 = str(int(start) + size) + elems[start_col_1]=end1 + elems[end_col_1]=start + assert int(elems[start_col_1]) > 0 and int(elems[end_col_1]) > 0 + fo.write( "%s\n" % '\t'.join( elems ) ) + elems[start_col_1]=start + elems[end_col_1]=end2 + assert int(elems[start_col_1]) > 0 and int(elems[end_col_1]) > 0 + fo.write( "%s\n" % '\t'.join( elems ) ) + elif region == 'end': + start = str(int(elems[end_col_1]) + offset) + end1 = str(int(start) - size) + end2 = str(int(start) + size) + elems[start_col_1]=end1 + elems[end_col_1]=start + assert int(elems[start_col_1]) > 0 and int(elems[end_col_1]) > 0 + fo.write( "%s\n" % '\t'.join( elems ) ) + elems[start_col_1]=start + elems[end_col_1]=end2 + assert int(elems[start_col_1]) > 0 and int(elems[end_col_1]) > 0 + fo.write( "%s\n" % '\t'.join( elems ) ) + else: + start1 = str(int(elems[start_col_1]) + offset) + end1 = str(int(start1) - size) + start2 = str(int(elems[end_col_1]) + offset) + end2 = str(int(start2) + size) + elems[start_col_1]=end1 + elems[end_col_1]=start1 + assert int(elems[start_col_1]) > 0 and int(elems[end_col_1]) > 0 + fo.write( "%s\n" % '\t'.join( elems ) ) + elems[start_col_1]=start2 + elems[end_col_1]=end2 + assert int(elems[start_col_1]) > 0 and int(elems[end_col_1]) > 0 + fo.write( "%s\n" % '\t'.join( elems ) ) + except: + skipped_lines += 1 + if not invalid_line: + first_invalid_line = i + 1 + invalid_line = line + fo.close() + + if skipped_lines == j: + stop_err( "Data issue: click the pencil icon in the history item to correct the metadata attributes." ) + if skipped_lines > 0: + print 'Skipped %d invalid lines starting with #%dL "%s"' % ( skipped_lines, first_invalid_line, invalid_line ) + print 'Location: %s, Region: %s, Flank-length: %d, Offset: %d ' %( direction, region, size, offset ) + +if __name__ == "__main__": + main()