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comparison PsiCLASS-1.0.2/samtools-0.1.19/bcftools/vcfutils.pl @ 0:903fc43d6227 draft default tip
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author | lsong10 |
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date | Fri, 26 Mar 2021 16:52:45 +0000 |
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1 #!/usr/bin/perl -w | |
2 | |
3 # Author: lh3 | |
4 | |
5 use strict; | |
6 use warnings; | |
7 use Getopt::Std; | |
8 | |
9 &main; | |
10 exit; | |
11 | |
12 sub main { | |
13 &usage if (@ARGV < 1); | |
14 my $command = shift(@ARGV); | |
15 my %func = (subsam=>\&subsam, listsam=>\&listsam, fillac=>\&fillac, qstats=>\&qstats, varFilter=>\&varFilter, | |
16 hapmap2vcf=>\&hapmap2vcf, ucscsnp2vcf=>\&ucscsnp2vcf, filter4vcf=>\&varFilter, ldstats=>\&ldstats, | |
17 gapstats=>\&gapstats, splitchr=>\&splitchr, vcf2fq=>\&vcf2fq); | |
18 die("Unknown command \"$command\".\n") if (!defined($func{$command})); | |
19 &{$func{$command}}; | |
20 } | |
21 | |
22 sub splitchr { | |
23 my %opts = (l=>5000000); | |
24 getopts('l:', \%opts); | |
25 my $l = $opts{l}; | |
26 die(qq/Usage: vcfutils.pl splitchr [-l $opts{l}] <in.fa.fai>\n/) if (@ARGV == 0 && -t STDIN); | |
27 while (<>) { | |
28 my @t = split; | |
29 my $last = 0; | |
30 for (my $i = 0; $i < $t[1];) { | |
31 my $e = ($t[1] - $i) / $l < 1.1? $t[1] : $i + $l; | |
32 print "$t[0]:".($i+1)."-$e\n"; | |
33 $i = $e; | |
34 } | |
35 } | |
36 } | |
37 | |
38 sub subsam { | |
39 die(qq/Usage: vcfutils.pl subsam <in.vcf> [samples]\n/) if (@ARGV == 0); | |
40 my ($fh, %h); | |
41 my $fn = shift(@ARGV); | |
42 my @col; | |
43 open($fh, ($fn =~ /\.gz$/)? "gzip -dc $fn |" : $fn) || die; | |
44 $h{$_} = 1 for (@ARGV); | |
45 while (<$fh>) { | |
46 if (/^##/) { | |
47 print; | |
48 } elsif (/^#/) { | |
49 my @t = split; | |
50 my @s = @t[0..8]; # all fixed fields + FORMAT | |
51 for (9 .. $#t) { | |
52 if ($h{$t[$_]}) { | |
53 push(@s, $t[$_]); | |
54 push(@col, $_); | |
55 } | |
56 } | |
57 pop(@s) if (@s == 9); # no sample selected; remove the FORMAT field | |
58 print join("\t", @s), "\n"; | |
59 } else { | |
60 my @t = split; | |
61 if (@col == 0) { | |
62 print join("\t", @t[0..7]), "\n"; | |
63 } else { | |
64 print join("\t", @t[0..8], map {$t[$_]} @col), "\n"; | |
65 } | |
66 } | |
67 } | |
68 close($fh); | |
69 } | |
70 | |
71 sub listsam { | |
72 die(qq/Usage: vcfutils.pl listsam <in.vcf>\n/) if (@ARGV == 0 && -t STDIN); | |
73 while (<>) { | |
74 if (/^#/ && !/^##/) { | |
75 my @t = split; | |
76 print join("\n", @t[9..$#t]), "\n"; | |
77 exit; | |
78 } | |
79 } | |
80 } | |
81 | |
82 sub fillac { | |
83 die(qq/Usage: vcfutils.pl fillac <in.vcf>\n\nNote: The GT field MUST BE present and always appear as the first field.\n/) if (@ARGV == 0 && -t STDIN); | |
84 while (<>) { | |
85 if (/^#/) { | |
86 print; | |
87 } else { | |
88 my @t = split; | |
89 my @c = (0, 0); | |
90 my $n = 0; | |
91 my $s = -1; | |
92 @_ = split(":", $t[8]); | |
93 for (0 .. $#_) { | |
94 if ($_[$_] eq 'GT') { $s = $_; last; } | |
95 } | |
96 if ($s < 0) { | |
97 print join("\t", @t), "\n"; | |
98 next; | |
99 } | |
100 for (9 .. $#t) { | |
101 if ($t[$_] =~ /^0,0,0/) { | |
102 } elsif ($t[$_] =~ /^([^\s:]+:){$s}(\d+).(\d+)/) { | |
103 ++$c[$2]; ++$c[$3]; | |
104 $n += 2; | |
105 } | |
106 } | |
107 my $AC = "AC=" . join("\t", @c[1..$#c]) . ";AN=$n"; | |
108 my $info = $t[7]; | |
109 $info =~ s/(;?)AC=(\d+)//; | |
110 $info =~ s/(;?)AN=(\d+)//; | |
111 if ($info eq '.') { | |
112 $info = $AC; | |
113 } else { | |
114 $info .= ";$AC"; | |
115 } | |
116 $t[7] = $info; | |
117 print join("\t", @t), "\n"; | |
118 } | |
119 } | |
120 } | |
121 | |
122 sub ldstats { | |
123 my %opts = (t=>0.9); | |
124 getopts('t:', \%opts); | |
125 die("Usage: vcfutils.pl ldstats [-t $opts{t}] <in.vcf>\n") if (@ARGV == 0 && -t STDIN); | |
126 my $cutoff = $opts{t}; | |
127 my ($last, $lastchr) = (0x7fffffff, ''); | |
128 my ($x, $y, $n) = (0, 0, 0); | |
129 while (<>) { | |
130 if (/^([^#\s]+)\s(\d+)/) { | |
131 my ($chr, $pos) = ($1, $2); | |
132 if (/NEIR=([\d\.]+)/) { | |
133 ++$n; | |
134 ++$y, $x += $pos - $last if ($lastchr eq $chr && $pos > $last && $1 > $cutoff); | |
135 } | |
136 $last = $pos; $lastchr = $chr; | |
137 } | |
138 } | |
139 print "Number of SNP intervals in strong LD (r > $opts{t}): $y\n"; | |
140 print "Fraction: ", $y/$n, "\n"; | |
141 print "Length: $x\n"; | |
142 } | |
143 | |
144 sub qstats { | |
145 my %opts = (r=>'', s=>0.02, v=>undef); | |
146 getopts('r:s:v', \%opts); | |
147 die("Usage: vcfutils.pl qstats [-r ref.vcf] <in.vcf>\n | |
148 Note: This command discards indels. Output: QUAL #non-indel #SNPs #transitions #joint ts/tv #joint/#ref #joint/#non-indel \n") if (@ARGV == 0 && -t STDIN); | |
149 my %ts = (AG=>1, GA=>1, CT=>1, TC=>1); | |
150 my %h = (); | |
151 my $is_vcf = defined($opts{v})? 1 : 0; | |
152 if ($opts{r}) { # read the reference positions | |
153 my $fh; | |
154 open($fh, $opts{r}) || die; | |
155 while (<$fh>) { | |
156 next if (/^#/); | |
157 if ($is_vcf) { | |
158 my @t = split; | |
159 $h{$t[0],$t[1]} = $t[4]; | |
160 } else { | |
161 $h{$1,$2} = 1 if (/^(\S+)\s+(\d+)/); | |
162 } | |
163 } | |
164 close($fh); | |
165 } | |
166 my $hsize = scalar(keys %h); | |
167 my @a; | |
168 while (<>) { | |
169 next if (/^#/); | |
170 my @t = split; | |
171 next if (length($t[3]) != 1 || uc($t[3]) eq 'N'); | |
172 $t[3] = uc($t[3]); $t[4] = uc($t[4]); | |
173 my @s = split(',', $t[4]); | |
174 $t[5] = 3 if ($t[5] eq '.' || $t[5] < 0); | |
175 next if (length($s[0]) != 1); | |
176 my $hit; | |
177 if ($is_vcf) { | |
178 $hit = 0; | |
179 my $aa = $h{$t[0],$t[1]}; | |
180 if (defined($aa)) { | |
181 my @aaa = split(",", $aa); | |
182 for (@aaa) { | |
183 $hit = 1 if ($_ eq $s[0]); | |
184 } | |
185 } | |
186 } else { | |
187 $hit = defined($h{$t[0],$t[1]})? 1 : 0; | |
188 } | |
189 push(@a, [$t[5], ($t[4] eq '.' || $t[4] eq $t[3])? 0 : 1, $ts{$t[3].$s[0]}? 1 : 0, $hit]); | |
190 } | |
191 push(@a, [-1, 0, 0, 0]); # end marker | |
192 die("[qstats] No SNP data!\n") if (@a == 0); | |
193 @a = sort {$b->[0]<=>$a->[0]} @a; | |
194 my $next = $opts{s}; | |
195 my $last = $a[0]; | |
196 my @c = (0, 0, 0, 0); | |
197 my @lc; | |
198 $lc[1] = $lc[2] = 0; | |
199 for my $p (@a) { | |
200 if ($p->[0] == -1 || ($p->[0] != $last && $c[0]/@a > $next)) { | |
201 my @x; | |
202 $x[0] = sprintf("%.4f", $c[1]-$c[2]? $c[2] / ($c[1] - $c[2]) : 100); | |
203 $x[1] = sprintf("%.4f", $hsize? $c[3] / $hsize : 0); | |
204 $x[2] = sprintf("%.4f", $c[3] / $c[1]); | |
205 my $a = $c[1] - $lc[1]; | |
206 my $b = $c[2] - $lc[2]; | |
207 $x[3] = sprintf("%.4f", $a-$b? $b / ($a-$b) : 100); | |
208 print join("\t", $last, @c, @x), "\n"; | |
209 $next = $c[0]/@a + $opts{s}; | |
210 $lc[1] = $c[1]; $lc[2] = $c[2]; | |
211 } | |
212 ++$c[0]; $c[1] += $p->[1]; $c[2] += $p->[2]; $c[3] += $p->[3]; | |
213 $last = $p->[0]; | |
214 } | |
215 } | |
216 | |
217 sub varFilter { | |
218 my %opts = (d=>2, D=>10000000, a=>2, W=>10, Q=>10, w=>3, p=>undef, 1=>1e-4, 2=>1e-100, 3=>0, 4=>1e-4, G=>0, S=>1000, e=>1e-4); | |
219 getopts('pd:D:W:Q:w:a:1:2:3:4:G:S:e:', \%opts); | |
220 die(qq/ | |
221 Usage: vcfutils.pl varFilter [options] <in.vcf> | |
222 | |
223 Options: -Q INT minimum RMS mapping quality for SNPs [$opts{Q}] | |
224 -d INT minimum read depth [$opts{d}] | |
225 -D INT maximum read depth [$opts{D}] | |
226 -a INT minimum number of alternate bases [$opts{a}] | |
227 -w INT SNP within INT bp around a gap to be filtered [$opts{w}] | |
228 -W INT window size for filtering adjacent gaps [$opts{W}] | |
229 -1 FLOAT min P-value for strand bias (given PV4) [$opts{1}] | |
230 -2 FLOAT min P-value for baseQ bias [$opts{2}] | |
231 -3 FLOAT min P-value for mapQ bias [$opts{3}] | |
232 -4 FLOAT min P-value for end distance bias [$opts{4}] | |
233 -e FLOAT min P-value for HWE (plus F<0) [$opts{e}] | |
234 -p print filtered variants | |
235 | |
236 Note: Some of the filters rely on annotations generated by SAMtools\/BCFtools. | |
237 \n/) if (@ARGV == 0 && -t STDIN); | |
238 | |
239 # calculate the window size | |
240 my ($ol, $ow) = ($opts{W}, $opts{w}); | |
241 my $max_dist = $ol > $ow? $ol : $ow; | |
242 # the core loop | |
243 my @staging; # (indel_filtering_score, flt_tag, indel_span; chr, pos, ...) | |
244 while (<>) { | |
245 my @t = split; | |
246 if (/^#/) { | |
247 print; next; | |
248 } | |
249 next if ($t[4] eq '.'); # skip non-var sites | |
250 next if ($t[3] eq 'N'); # skip sites with unknown ref ('N') | |
251 # check if the site is a SNP | |
252 my $type = 1; # SNP | |
253 if (length($t[3]) > 1) { | |
254 $type = 2; # MNP | |
255 my @s = split(',', $t[4]); | |
256 for (@s) { | |
257 $type = 3 if (length != length($t[3])); | |
258 } | |
259 } else { | |
260 my @s = split(',', $t[4]); | |
261 for (@s) { | |
262 $type = 3 if (length > 1); | |
263 } | |
264 } | |
265 # clear the out-of-range elements | |
266 while (@staging) { | |
267 # Still on the same chromosome and the first element's window still affects this position? | |
268 last if ($staging[0][3] eq $t[0] && $staging[0][4] + $staging[0][2] + $max_dist >= $t[1]); | |
269 varFilter_aux(shift(@staging), $opts{p}); # calling a function is a bit slower, not much | |
270 } | |
271 my $flt = 0; | |
272 # parse annotations | |
273 my ($dp, $mq, $dp_alt) = (-1, -1, -1); | |
274 if ($t[7] =~ /DP4=(\d+),(\d+),(\d+),(\d+)/i) { | |
275 $dp = $1 + $2 + $3 + $4; | |
276 $dp_alt = $3 + $4; | |
277 } | |
278 if ($t[7] =~ /DP=(\d+)/i) { | |
279 $dp = $1; | |
280 } | |
281 $mq = $1 if ($t[7] =~ /MQ=(\d+)/i); | |
282 # the depth and mapQ filter | |
283 if ($dp >= 0) { | |
284 if ($dp < $opts{d}) { | |
285 $flt = 2; | |
286 } elsif ($dp > $opts{D}) { | |
287 $flt = 3; | |
288 } | |
289 } | |
290 $flt = 4 if ($dp_alt >= 0 && $dp_alt < $opts{a}); | |
291 $flt = 1 if ($flt == 0 && $mq >= 0 && $mq < $opts{Q}); | |
292 $flt = 7 if ($flt == 0 && /PV4=([^,]+),([^,]+),([^,]+),([^,;\t]+)/ | |
293 && ($1<$opts{1} || $2<$opts{2} || $3<$opts{3} || $4<$opts{4})); | |
294 $flt = 8 if ($flt == 0 && ((/MXGQ=(\d+)/ && $1 < $opts{G}) || (/MXSP=(\d+)/ && $1 >= $opts{S}))); | |
295 # HWE filter | |
296 if ($t[7] =~ /G3=([^;,]+),([^;,]+),([^;,]+).*HWE=([^;,]+)/ && $4 < $opts{e}) { | |
297 my $p = 2*$1 + $2; | |
298 my $f = ($p > 0 && $p < 1)? 1 - $2 / ($p * (1-$p)) : 0; | |
299 $flt = 9 if ($f < 0); | |
300 } | |
301 | |
302 my $score = $t[5] * 100 + $dp_alt; | |
303 my $rlen = length($t[3]) - 1; # $indel_score<0 for SNPs | |
304 if ($flt == 0) { | |
305 if ($type == 3) { # an indel | |
306 # filtering SNPs and MNPs | |
307 for my $x (@staging) { | |
308 next if (($x->[0]&3) == 3 || $x->[1] || $x->[4] + $x->[2] + $ow < $t[1]); | |
309 $x->[1] = 5; | |
310 } | |
311 # check the staging list for indel filtering | |
312 for my $x (@staging) { | |
313 next if (($x->[0]&3) != 3 || $x->[1] || $x->[4] + $x->[2] + $ol < $t[1]); | |
314 if ($x->[0]>>2 < $score) { | |
315 $x->[1] = 6; | |
316 } else { | |
317 $flt = 6; last; | |
318 } | |
319 } | |
320 } else { # SNP or MNP | |
321 for my $x (@staging) { | |
322 next if (($x->[0]&3) != 3 || $x->[4] + $x->[2] + $ow < $t[1]); | |
323 if ($x->[4] + length($x->[7]) - 1 == $t[1] && substr($x->[7], -1, 1) eq substr($t[4], 0, 1) | |
324 && length($x->[7]) - length($x->[6]) == 1) { | |
325 $x->[1] = 5; | |
326 } else { $flt = 5; } | |
327 last; | |
328 } | |
329 # check MNP | |
330 for my $x (@staging) { | |
331 next if (($x->[0]&3) == 3 || $x->[4] + $x->[2] < $t[1]); | |
332 if ($x->[0]>>2 < $score) { | |
333 $x->[1] = 8; | |
334 } else { | |
335 $flt = 8; last; | |
336 } | |
337 } | |
338 } | |
339 } | |
340 push(@staging, [$score<<2|$type, $flt, $rlen, @t]); | |
341 } | |
342 # output the last few elements in the staging list | |
343 while (@staging) { | |
344 varFilter_aux(shift @staging, $opts{p}); | |
345 } | |
346 } | |
347 | |
348 sub varFilter_aux { | |
349 my ($first, $is_print) = @_; | |
350 if ($first->[1] == 0) { | |
351 print join("\t", @$first[3 .. @$first-1]), "\n"; | |
352 } elsif ($is_print) { | |
353 print STDERR join("\t", substr("UQdDaGgPMS", $first->[1], 1), @$first[3 .. @$first-1]), "\n"; | |
354 } | |
355 } | |
356 | |
357 sub gapstats { | |
358 my (@c0, @c1); | |
359 $c0[$_] = $c1[$_] = 0 for (0 .. 10000); | |
360 while (<>) { | |
361 next if (/^#/); | |
362 my @t = split; | |
363 next if (length($t[3]) == 1 && $t[4] =~ /^[A-Za-z](,[A-Za-z])*$/); # not an indel | |
364 my @s = split(',', $t[4]); | |
365 for my $x (@s) { | |
366 my $l = length($x) - length($t[3]) + 5000; | |
367 if ($x =~ /^-/) { | |
368 $l = -(length($x) - 1) + 5000; | |
369 } elsif ($x =~ /^\+/) { | |
370 $l = length($x) - 1 + 5000; | |
371 } | |
372 $c0[$l] += 1 / @s; | |
373 } | |
374 } | |
375 for (my $i = 0; $i < 10000; ++$i) { | |
376 next if ($c0[$i] == 0); | |
377 $c1[0] += $c0[$i]; | |
378 $c1[1] += $c0[$i] if (($i-5000)%3 == 0); | |
379 printf("C\t%d\t%.2f\n", ($i-5000), $c0[$i]); | |
380 } | |
381 printf("3\t%d\t%d\t%.3f\n", $c1[0], $c1[1], $c1[1]/$c1[0]); | |
382 } | |
383 | |
384 sub ucscsnp2vcf { | |
385 die("Usage: vcfutils.pl <in.ucsc.snp>\n") if (@ARGV == 0 && -t STDIN); | |
386 print "##fileformat=VCFv4.0\n"; | |
387 print join("\t", "#CHROM\tPOS\tID\tREF\tALT\tQUAL\tFILTER\tINFO"), "\n"; | |
388 while (<>) { | |
389 my @t = split("\t"); | |
390 my $indel = ($t[9] =~ /^[ACGT](\/[ACGT])+$/)? 0 : 1; | |
391 my $pos = $t[2] + 1; | |
392 my @alt; | |
393 push(@alt, $t[7]); | |
394 if ($t[6] eq '-') { | |
395 $t[9] = reverse($t[9]); | |
396 $t[9] =~ tr/ACGTRYMKWSNacgtrymkwsn/TGCAYRKMWSNtgcayrkmwsn/; | |
397 } | |
398 my @a = split("/", $t[9]); | |
399 for (@a) { | |
400 push(@alt, $_) if ($_ ne $alt[0]); | |
401 } | |
402 if ($indel) { | |
403 --$pos; | |
404 for (0 .. $#alt) { | |
405 $alt[$_] =~ tr/-//d; | |
406 $alt[$_] = "N$alt[$_]"; | |
407 } | |
408 } | |
409 my $ref = shift(@alt); | |
410 my $af = $t[13] > 0? ";AF=$t[13]" : ''; | |
411 my $valid = ($t[12] eq 'unknown')? '' : ";valid=$t[12]"; | |
412 my $info = "molType=$t[10];class=$t[11]$valid$af"; | |
413 print join("\t", $t[1], $pos, $t[4], $ref, join(",", @alt), 0, '.', $info), "\n"; | |
414 } | |
415 } | |
416 | |
417 sub hapmap2vcf { | |
418 die("Usage: vcfutils.pl <in.ucsc.snp> <in.hapmap>\n") if (@ARGV == 0); | |
419 my $fn = shift(@ARGV); | |
420 # parse UCSC SNP | |
421 warn("Parsing UCSC SNPs...\n"); | |
422 my ($fh, %map); | |
423 open($fh, ($fn =~ /\.gz$/)? "gzip -dc $fn |" : $fn) || die; | |
424 while (<$fh>) { | |
425 my @t = split; | |
426 next if ($t[3] - $t[2] != 1); # not SNP | |
427 @{$map{$t[4]}} = @t[1,3,7]; | |
428 } | |
429 close($fh); | |
430 # write VCF | |
431 warn("Writing VCF...\n"); | |
432 print "##fileformat=VCFv4.0\n"; | |
433 while (<>) { | |
434 my @t = split; | |
435 if ($t[0] eq 'rs#') { # the first line | |
436 print join("\t", "#CHROM\tPOS\tID\tREF\tALT\tQUAL\tFILTER\tINFO\tFORMAT", @t[11..$#t]), "\n"; | |
437 } else { | |
438 next unless ($map{$t[0]}); | |
439 next if (length($t[1]) != 3); # skip non-SNPs | |
440 my $a = \@{$map{$t[0]}}; | |
441 my $ref = $a->[2]; | |
442 my @u = split('/', $t[1]); | |
443 if ($u[1] eq $ref) { | |
444 $u[1] = $u[0]; $u[0] = $ref; | |
445 } elsif ($u[0] ne $ref) { next; } | |
446 my $alt = $u[1]; | |
447 my %w; | |
448 $w{$u[0]} = 0; $w{$u[1]} = 1; | |
449 my @s = (@$a[0,1], $t[0], $ref, $alt, 0, '.', '.', 'GT'); | |
450 my $is_tri = 0; | |
451 for (@t[11..$#t]) { | |
452 if ($_ eq 'NN') { | |
453 push(@s, './.'); | |
454 } else { | |
455 my @a = ($w{substr($_,0,1)}, $w{substr($_,1,1)}); | |
456 if (!defined($a[0]) || !defined($a[1])) { | |
457 $is_tri = 1; | |
458 last; | |
459 } | |
460 push(@s, "$a[0]/$a[1]"); | |
461 } | |
462 } | |
463 next if ($is_tri); | |
464 print join("\t", @s), "\n"; | |
465 } | |
466 } | |
467 } | |
468 | |
469 sub vcf2fq { | |
470 my %opts = (d=>3, D=>100000, Q=>10, l=>5); | |
471 getopts('d:D:Q:l:', \%opts); | |
472 die(qq/ | |
473 Usage: vcfutils.pl vcf2fq [options] <all-site.vcf> | |
474 | |
475 Options: -d INT minimum depth [$opts{d}] | |
476 -D INT maximum depth [$opts{D}] | |
477 -Q INT min RMS mapQ [$opts{Q}] | |
478 -l INT INDEL filtering window [$opts{l}] | |
479 \n/) if (@ARGV == 0 && -t STDIN); | |
480 | |
481 my ($last_chr, $seq, $qual, $last_pos, @gaps); | |
482 my $_Q = $opts{Q}; | |
483 my $_d = $opts{d}; | |
484 my $_D = $opts{D}; | |
485 | |
486 my %het = (AC=>'M', AG=>'R', AT=>'W', CA=>'M', CG=>'S', CT=>'Y', | |
487 GA=>'R', GC=>'S', GT=>'K', TA=>'W', TC=>'Y', TG=>'K'); | |
488 | |
489 $last_chr = ''; | |
490 while (<>) { | |
491 next if (/^#/); | |
492 my @t = split; | |
493 if ($last_chr ne $t[0]) { | |
494 &v2q_post_process($last_chr, \$seq, \$qual, \@gaps, $opts{l}) if ($last_chr); | |
495 ($last_chr, $last_pos) = ($t[0], 0); | |
496 $seq = $qual = ''; | |
497 @gaps = (); | |
498 } | |
499 die("[vcf2fq] unsorted input\n") if ($t[1] - $last_pos < 0); | |
500 if ($t[1] - $last_pos > 1) { | |
501 $seq .= 'n' x ($t[1] - $last_pos - 1); | |
502 $qual .= '!' x ($t[1] - $last_pos - 1); | |
503 } | |
504 if (length($t[3]) == 1 && $t[7] !~ /INDEL/ && $t[4] =~ /^([A-Za-z.])(,[A-Za-z])*$/) { # a SNP or reference | |
505 my ($ref, $alt) = ($t[3], $1); | |
506 my ($b, $q); | |
507 $q = $1 if ($t[7] =~ /FQ=(-?[\d\.]+)/); | |
508 if ($q < 0) { | |
509 $_ = ($t[7] =~ /AF1=([\d\.]+)/)? $1 : 0; | |
510 $b = ($_ < .5 || $alt eq '.')? $ref : $alt; | |
511 $q = -$q; | |
512 } else { | |
513 $b = $het{"$ref$alt"}; | |
514 $b ||= 'N'; | |
515 } | |
516 $b = lc($b); | |
517 $b = uc($b) if (($t[7] =~ /MQ=(\d+)/ && $1 >= $_Q) && ($t[7] =~ /DP=(\d+)/ && $1 >= $_d && $1 <= $_D)); | |
518 $q = int($q + 33 + .499); | |
519 $q = chr($q <= 126? $q : 126); | |
520 $seq .= $b; | |
521 $qual .= $q; | |
522 } elsif ($t[4] ne '.') { # an INDEL | |
523 push(@gaps, [$t[1], length($t[3])]); | |
524 } | |
525 $last_pos = $t[1]; | |
526 } | |
527 &v2q_post_process($last_chr, \$seq, \$qual, \@gaps, $opts{l}); | |
528 } | |
529 | |
530 sub v2q_post_process { | |
531 my ($chr, $seq, $qual, $gaps, $l) = @_; | |
532 for my $g (@$gaps) { | |
533 my $beg = $g->[0] > $l? $g->[0] - $l : 0; | |
534 my $end = $g->[0] + $g->[1] + $l; | |
535 $end = length($$seq) if ($end > length($$seq)); | |
536 substr($$seq, $beg, $end - $beg) = lc(substr($$seq, $beg, $end - $beg)); | |
537 } | |
538 print "\@$chr\n"; &v2q_print_str($seq); | |
539 print "+\n"; &v2q_print_str($qual); | |
540 } | |
541 | |
542 sub v2q_print_str { | |
543 my ($s) = @_; | |
544 my $l = length($$s); | |
545 for (my $i = 0; $i < $l; $i += 60) { | |
546 print substr($$s, $i, 60), "\n"; | |
547 } | |
548 } | |
549 | |
550 sub usage { | |
551 die(qq/ | |
552 Usage: vcfutils.pl <command> [<arguments>]\n | |
553 Command: subsam get a subset of samples | |
554 listsam list the samples | |
555 fillac fill the allele count field | |
556 qstats SNP stats stratified by QUAL | |
557 | |
558 hapmap2vcf convert the hapmap format to VCF | |
559 ucscsnp2vcf convert UCSC SNP SQL dump to VCF | |
560 | |
561 varFilter filtering short variants (*) | |
562 vcf2fq VCF->fastq (**) | |
563 | |
564 Notes: Commands with description endting with (*) may need bcftools | |
565 specific annotations. | |
566 \n/); | |
567 } |