Released minimap2-2.3 (r531)

Author: lh3

NEWS.md

@@ -1,3 +1,37 @@
+Release 2.3-r531 (22 October 2017)
+----------------------------------
+
+This release come with many improvements and bug fixes:
+
+ * The **sr** preset now supports paired-end short-read alignment. Minimap2 is
+   3-4 times as fast as BWA-MEM, but is slightly less accurate on simulated
+   reads.
+
+ * Meticulous improvements to assembly-to-assembly alignment (special thanks to
+   Alexey Gurevich from the QUAST team): a) apply a small penalty to matches
+   between ambiguous bases; b) reduce missing alignments due to spurious
+   overlaps; c) introduce the short form of the `cs` tag, an improvement to the
+   SAM MD tag.
+
+ * Make sure gaps are always left-aligned.
+
+ * Recognize `U` bases from Oxford Nanopore Direct RNA-seq (#33).
+
+ * Fixed slightly wrong chaining score. Fixed slightly inaccurate coordinates
+   for split alignment.
+
+ * Fixed multiple reported bugs: 1) wrong reference name for inversion
+   alignment (#30); 2) redundant SQ lines when multiple query files are
+   specified (#39); 3) non-functioning option `-K` (#36).
+
+This release has implemented all the major features I planned five months ago,
+with the addition of spliced long-read alignment. The next couple of releases
+will focus on fine tuning of base algorithms.
+
+(2.3: 22 October 2017, r531)
+
+
+
 Release 2.2-r409 (17 September 2017)
 ------------------------------------
 

README.md

@@ -1,4 +1,4 @@
-[![Release](https://img.shields.io/badge/Release-v2.2-blue.svg?style=flat)](https://github.com/lh3/minimap2/releases)
+[![Release](https://img.shields.io/badge/Release-v2.3-blue.svg?style=flat)](https://github.com/lh3/minimap2/releases)
 [![BioConda](https://img.shields.io/conda/vn/bioconda/minimap2.svg?style=flat)](https://anaconda.org/bioconda/minimap2)
 [![PyPI](https://img.shields.io/pypi/v/mappy.svg?style=flat)](https://pypi.python.org/pypi/mappy)
 [![Python Version](https://img.shields.io/pypi/pyversions/mappy.svg?style=flat)](https://pypi.python.org/pypi/mappy)

main.c

@@ -6,7 +6,7 @@
 #include "mmpriv.h"
 #include "getopt.h"
 
-#define MM_VERSION "2.2-r526-dirty"
+#define MM_VERSION "2.3-r531"
 
 #ifdef __linux__
 #include <sys/resource.h>
@@ -68,7 +68,7 @@ int main(int argc, char *argv[])
 	const char *opt_str = "2aSw:k:K:t:r:f:Vv:g:G:I:d:XT:s:x:Hcp:M:n:z:A:B:O:E:m:N:Qu:R:hF:i:L";
 	mm_mapopt_t opt;
 	mm_idxopt_t ipt;
-	int i, c, n_threads = 3, long_idx, max_gap_ref = 0;
+	int i, c, n_threads = 3, long_idx;
 	char *fnw = 0, *rg = 0, *s;
 	FILE *fp_help = stderr;
 	mm_idx_reader_t *idx_rdr;
@@ -98,7 +98,7 @@ int main(int argc, char *argv[])
 		else if (c == 't') n_threads = atoi(optarg);
 		else if (c == 'v') mm_verbose = atoi(optarg);
 		else if (c == 'g') opt.max_gap = (int)mm_parse_num(optarg);
-		else if (c == 'G') max_gap_ref = (int)mm_parse_num(optarg);
+		else if (c == 'G') mm_mapopt_max_intron_len(&opt, (int)mm_parse_num(optarg));
 		else if (c == 'F') opt.max_frag_len = (int)mm_parse_num(optarg);
 		else if (c == 'i') opt.min_iden = atof(optarg);
 		else if (c == 'N') opt.best_n = atoi(optarg);
@@ -174,7 +174,7 @@ int main(int argc, char *argv[])
 			else if (*optarg == 'r') opt.flag |= MM_F_SPLICE_REV, opt.flag &= ~MM_F_SPLICE_FOR; // match CT-AC (reverse complement of GT-AG)
 			else if (*optarg == 'n') opt.flag &= ~(MM_F_SPLICE_FOR|MM_F_SPLICE_REV); // don't try to match the GT-AG signal
 			else {
-				fprintf(stderr, "[E::%s] unrecognized cDNA direction\n", __func__);
+				fprintf(stderr, "[ERROR]\033[1;31m unrecognized cDNA direction\033[0m\n");
 				return 1;
 			}
 		} else if (c == 'O') {
@@ -185,14 +185,9 @@ int main(int argc, char *argv[])
 			if (*s == ',') opt.e2 = strtol(s + 1, &s, 10);
 		}
 	}
-	if (max_gap_ref > 0) {
-		opt.max_gap_ref = max_gap_ref;
-		if (opt.flag & MM_F_SPLICE) opt.bw = max_gap_ref; // in the splice mode, this also changes the bandwidth
-	}
-	if ((opt.flag & MM_F_OUT_SAM) && (opt.flag & MM_F_OUT_CS_LONG)) {
-		opt.flag &= ~MM_F_OUT_CS_LONG;
-		if (mm_verbose >= 2)
-			fprintf(stderr, "[WARNING]\033[1;31m in SAM, only the short form of the cs tag is outputted.\033[0m\n");
+	if ((opt.flag & MM_F_SPLICE) && (opt.flag & MM_F_FRAG_MODE)) {
+		fprintf(stderr, "[ERROR]\033[1;31m --splice and --frag should not be specified at the same time.\033[0m\n");
+		return 1;
 	}
 
 	if (argc == optind || fp_help == stdout) {
@@ -207,8 +202,8 @@ int main(int argc, char *argv[])
 		fprintf(fp_help, "  Mapping:\n");
 		fprintf(fp_help, "    -f FLOAT     filter out top FLOAT fraction of repetitive minimizers [%g]\n", opt.mid_occ_frac);
 		fprintf(fp_help, "    -g NUM       stop chain enlongation if there are no minimizers in INT-bp [%d]\n", opt.max_gap);
-		fprintf(fp_help, "    -G NUM       max reference skip/intron length [-xsplice:200k]\n");
-		fprintf(fp_help, "    -F NUM       max fragment length in the fragment mode [-xsr:800]\n");
+		fprintf(fp_help, "    -G NUM       max intron length (effective with -xsplice; changing -r) [200k]\n");
+		fprintf(fp_help, "    -F NUM       max fragment length (effective with -xsr or in the fragment mode) [800]\n");
 		fprintf(fp_help, "    -r NUM       bandwidth used in chaining and DP-based alignment [%d]\n", opt.bw);
 		fprintf(fp_help, "    -n INT       minimal number of minimizers on a chain [%d]\n", opt.min_cnt);
 		fprintf(fp_help, "    -m INT       minimal chaining score (matching bases minus log gap penalty) [%d]\n", opt.min_chain_score);
@@ -228,7 +223,7 @@ int main(int argc, char *argv[])
 		fprintf(fp_help, "  Input/Output:\n");
 		fprintf(fp_help, "    -a           output in the SAM format (PAF by default)\n");
 		fprintf(fp_help, "    -Q           don't output base quality in SAM\n");
-		fprintf(fp_help, "    -L           write CIGAR with >65535 ops in the CG tag (compatible with future tools)\n");
+		fprintf(fp_help, "    -L           write CIGAR with >65535 ops at the CG tag\n");
 		fprintf(fp_help, "    -R STR       SAM read group line in a format like '@RG\\tID:foo\\tSM:bar' []\n");
 		fprintf(fp_help, "    -c           output CIGAR in PAF\n");
 		fprintf(fp_help, "    --cs[=STR]   output the cs tag; STR is 'short' (if absent) or 'long' [none]\n");

map.c

@@ -52,6 +52,12 @@ void mm_mapopt_update(mm_mapopt_t *opt, const mm_idx_t *mi)
 		fprintf(stderr, "[M::%s::%.3f*%.2f] mid_occ = %d\n", __func__, realtime() - mm_realtime0, cputime() / (realtime() - mm_realtime0), opt->mid_occ);
 }
 
+void mm_mapopt_max_intron_len(mm_mapopt_t *opt, int max_intron_len)
+{
+	if ((opt->flag & MM_F_SPLICE) && max_intron_len > 0)
+		opt->max_gap_ref = opt->bw = max_intron_len;
+}
+
 int mm_set_opt(const char *preset, mm_idxopt_t *io, mm_mapopt_t *mo)
 {
 	if (preset == 0) {

minimap.h

@@ -161,6 +161,8 @@ int mm_set_opt(const char *preset, mm_idxopt_t *io, mm_mapopt_t *mo);
  */
 void mm_mapopt_update(mm_mapopt_t *opt, const mm_idx_t *mi);
 
+void mm_mapopt_max_intron_len(mm_mapopt_t *opt, int max_intron_len);
+
 /**
  * Initialize an index reader
  *

minimap2.1

@@ -1,4 +1,4 @@
-.TH minimap2 1 "17 October 2017" "minimap2-2.2-dirty (r518)" "Bioinformatics tools"
+.TH minimap2 1 "22 October 2017" "minimap2-2.2-dirty (r531)" "Bioinformatics tools"
 .SH NAME
 .PP
 minimap2 - mapping and alignment between collections of DNA sequences
@@ -126,7 +126,7 @@ Stop chain enlongation if there are no minimizers in
 [10000].
 .TP
 .BI -r \ INT
-Bandwidth used in chaining and DP-based alignment [1000]. This option
+Bandwidth used in chaining and DP-based alignment [500]. This option
 approximately controls the maximum gap size.
 .TP
 .BI -n \ INT
@@ -148,7 +148,7 @@ diagonal minimizer hits will also be suppressed.
 .TP
 .BI -p \ FLOAT
 Minimal secondary-to-primary score ratio to output secondary mappings [0.8].
-Between two chains overlaping over half of the shorter chain (controled by
+Between two chains overlaping over half of the shorter chain (controlled by
 .BR --mask-level ),
 the chain with a lower score is secondary to the chain with a higher score.
 If the ratio of the scores is below
@@ -163,10 +163,16 @@ secondary alignments [5]. This option has no effect when
 is applied.
 .TP
 .BI -G \ NUM
-Maximal intron length in the splice mode [200k]. This option also changes the
-bandwidth to
+Maximum gap on the reference (effective with
+.BR -xsplice / --splice ).
+This option also changes the chaining and alignment band width to
 .IR NUM .
-Increasing this option slows down spliced alignment.
+Increasing this option slows down spliced alignment. [200k]
+.TP
+.BI -F \ NUM
+Maximum fragment length (aka insert size; effective with
+.BR -xsr / --frag)
+[800]
 .TP
 .BI --max-chain-skip \ INT
 A heuristics that stops chaining early [50]. Minimap2 uses dynamic programming
@@ -175,6 +181,23 @@ option makes minimap2 exits the inner loop if it repeatedly sees seeds already
 on chains. Set
 .I INT
 to a large number to switch off this heurstics.
+.TP
+.B --no-long-join
+Disable the long gap patching heuristic. When this option is applied, the
+maximum alignment gap is mostly controlled by
+.BR -r .
+.TP
+.B --splice
+Enable the splice alignment mode.
+.TP
+.B --sr
+Enable short-read alignment heuristics. In the short-read mode, minimap2
+applies a second round of chaining with a higher minimizer occurrence threshold
+if no good chain is found. In addition, minimap2 attempts to patch gaps between
+seeds with ungapped alignment.
+.TP
+.BR --frag [= no | yes ]
+Whether to enable the fragment mode [no]
 .SS Alignment options
 .TP 10
 .BI -A \ INT
@@ -194,6 +217,7 @@ Gap extension penalty [2,1]. A gap of length
 .I k
 costs
 .RI min{ O1 + k * E1 , O2 + k * E2 }.
+In the splice mode, the second gap penalties are not used.
 .TP
 .BI -z \ INT
 Break an alignment if the running score drops too quickly along the diagonal of
@@ -217,6 +241,9 @@ no attempt to match GT-AG [n]
 .TP
 .BI --cost-non-gt-ag \ INT
 Cost of non-canonical splicing sites [0].
+.TP
+.BI --end-bonus \ INT
+Score bonus when alignment extends to the end of the query sequence [10].
 .SS Input/output options
 .TP 10
 .B -a
@@ -226,9 +253,15 @@ by default.
 .B -Q
 Ignore base quality in the input file.
 .TP
+.B -L
+Write CIGAR with >65535 operators at the CG tag. Older tools are unable to
+convert alignments with >65535 CIGAR ops to BAM. This option makes minimap2 SAM
+compatible with older tools. Newer tools recognizes this tag and reconstruct
+the real CIGAR in memory.
+.TP
 .BI -R \ STR
 SAM read group line in a format like
-.B @RG\\\\tID:foo\\\\tSM:bar
+.RB @RG\\\\tID:foo\\\\tSM:bar
 [].
 .TP
 .B -c
@@ -249,6 +282,11 @@ is given,
 .I short
 is assumed. [none]
 .TP
+.BI --seed \ INT
+Integer seed for randomizing equally best hits. Minimap2 hashes
+.I INT
+and read name when choosing between equally best hits. [11]
+.TP
 .BI -t \ INT
 Number of threads [3]. Minimap2 uses at most three threads when indexing target
 sequences, and uses up to
@@ -271,6 +309,9 @@ K/M/G/k/m/g suffix is accepted. A large
 helps load balancing in the multi-threading mode, at the cost of increased
 memory.
 .TP
+.BR --secondary [= yes | no ]
+Whether to output secondary alignments [yes]
+.TP
 .B --version
 Print version number to stdout
 .SS Preset options
@@ -343,9 +384,9 @@ tag ignores introns to demote hits to pseudogenes.
 .B sr
 Short single-end reads without splicing
 .RB ( -k21
-.B -w11 -A2 -B8 -O12,32 -E2,1 -r50 -p.5 -N20 -f1000,5000 -n2 -m20 -s40 -g200
-.B -2K50m --frag
-.BR --sr ).
+.B -w11 --sr --frag -A2 -B8 -O12,32 -E2,1 -r50 -p.5 -N20 -f1000,5000 -n2 -m20
+.B -s40 -g200 -2K50m
+.BR --secondary=no ).
 .RE
 .SS Miscellaneous options
 .TP 10
@@ -358,7 +399,7 @@ multi-threading mode.
 .B --print-qname
 Print query names to stderr, mostly to see which query is crashing minimap2.
 .TP
-.B --print-seed
+.B --print-seeds
 Print seed positions to stderr, for debugging only.
 .SH OUTPUT FORMAT
 .PP

setup.py

@@ -23,7 +23,7 @@ def readme():
 
 setup(
 	name = 'mappy',
-	version = '2.2',
+	version = '2.3',
 	url = 'https://github.com/lh3/minimap2',
 	description = 'Minimap2 python binding',
 	long_description = readme(),