d07356d76401059fbe6c2d0890b1490546a62a4e max Mon Sep 14 02:54:50 2026 -0700 hg38 Fiber-seq: reissued GM12878 data and a nucleosome density track, refs #36210 The lab reprocessed GM12878 (PM00001) and replaced the files in place under the same hash directory. Ten of its twelve files changed; a size sweep over all 41 samples confirmed no other sample is affected. This fixes the two placeholder haplotype accessibility bigWigs that covered a single base, so that overlay now draws real data for the sample that comes up by default. Its peak calls changed substantially as well, 429,883 source peaks before and 196,742 now, which is noted on the description page since figures made from the first version of the track will not reproduce for GM12878. The downloader now fetches into <file>.part and moves it into place when complete. It used curl -C - straight onto the final file, which is right for an interrupted transfer and silently corrupting when the server has replaced the file: it would have appended the tail of the new 5.2 GB hap1 file to the 512-byte stub, and the size check afterwards would have passed. It also takes an optional list of accessions now, to refresh one sample without walking all 41. Nucleosome density (all.nucleosome.coverage.bw) was sent separately and is not in the lab's own hub. It is on the server for all 41 samples and is added as a seventh data type in the compendium. Unlike every other wiggle here it is a read depth rather than a percentage, so it cannot take fixed viewLimits: the genome-wide mean runs from 25 to 142 across samples with sequencing depth and single loci reach 1.7e5. It is drawn with autoScale, which the description page explains, and reads as the complement of the accessibility signal. diff --git src/hg/makeDb/scripts/fiberSeq/fiberSeqTrackDb.py src/hg/makeDb/scripts/fiberSeq/fiberSeqTrackDb.py index b80b193465b..f71e5574b7b 100755 --- src/hg/makeDb/scripts/fiberSeq/fiberSeqTrackDb.py +++ src/hg/makeDb/scripts/fiberSeq/fiberSeqTrackDb.py @@ -1,438 +1,461 @@ #!/usr/bin/env python3 """Generate the hg38 Fiber-seq trackDb stanza plus the faceted-composite metadata and color files. Writes, given the sample list in fiberSeqSamples.tsv: <trackDbDir>/fiberSeq.ra the track stanzas <dataDir>/fiberSeqCompendium_metadata.tsv the faceted sample table <dataDir>/fiberSeqCompendium_colors.json facet swatches Subtrack names are deliberately "<composite>_<accession>_<dataType>" with the accession as the only middle component. facetedCompositeUi() in hg/hgTrackUi/hgTrackUi.c derives the data element by cutting at the first underscore after the composite name, and cartDump.c rebuilds the subtrack name as composite_element_type, so an accession holding an underscore (or a middle part like "GM12878_PM00001") would make the browser look for tracks that do not exist. Sample name and cell type live in the metadata table instead. Usage: fiberSeqTrackDb.py [--data-dir DIR] [--gbdb-dir DIR] [--trackdb-dir DIR] """ import argparse import json import os import sys SCRIPT_DIR = os.path.dirname(os.path.abspath(__file__)) SAMPLE_LIST = os.path.join(SCRIPT_DIR, "fiberSeqSamples.tsv") # The seven cell lines the lab wants in the always-on overlay, in their order, # with the Okabe-Ito colors they chose in their own hub. DEFAULT_OVERLAY = [ ("PM00001", "230,159,0"), # GM12878, orange ("PM00004", "86,180,233"), # K562, sky blue ("PM00005", "0,158,115"), # HepG2, bluish green ("PM00010", "240,228,66"), # H1, yellow ("PM00008", "0,114,178"), # Hap1, blue ("PM00012", "213,94,0"), # Hek293T, vermillion ("PM00009", "204,121,167"), # Jurkat, reddish purple ] # Samples selected on a first visit. A clean cross-product with the three # default data types, so the facet table comes up as a tidy grid rather than the # ragged per-sample mix the source hub had. DEFAULT_SELECTED = ["PM00001", "PM00004", "PM00005"] HAP1_COLOR = "0,114,178" # Okabe-Ito blue HAP2_COLOR = "213,94,0" # Okabe-Ito vermillion # CpG haplotype-difference thresholds: file suffix, label, color. A sequential # yellow-to-red ramp over nested significance cutoffs, monotonic in lightness. DIFF_LEVELS = [ ("cpg.diffs_all.bw", "All", "137,143,143"), ("cpg.diffs_p0.01.bw", "p < 0.01", "235,229,52"), ("cpg.diffs_p0.001.bw", "p < 0.001", "245,148,22"), ("cpg.diffs_p0.0001.bw", "p < 0.0001", "255,0,0"), ] # Shown behind an info icon on the Sample class column heading. SAMPLE_CLASS_DESCRIPTION = ( "HPRC = Lymphoblastoid (B-lymphocyte, EBV) cell lines from the NHGRI " "Human Pangenome Reference Consortium") # Sample class swatches, shown next to that facet's checkboxes. # Okabe-Ito colors for the swatches. SAMPLE_CLASS_COLORS = { "HPRC": "#0072B2", "Common Cell Line": "#D55E00", } # Lymphoblastoid lines that are not from the Human Pangenome Reference # Consortium: GM12878 is the ENCODE line and HG002 is Genome in a Bottle. Both # are B-lymphocyte EBV lines like the HPRC samples, so cell type alone cannot # tell them apart and they have to be named. NOT_HPRC = {"GM12878", "HG002"} def sampleClass(sample, cellType): """Split a sample two ways for the Sample class column. HPRC is a lymphoblastoid (B-lymphocyte, EBV) line from the consortium; everything else, including the two lymphoblastoid lines listed in NOT_HPRC, is a common cell line.""" if "lymphoblastoid" in cellType.lower() and sample not in NOT_HPRC: return "HPRC" return "Common Cell Line" def readSamples(path): """Read fiberSeqSamples.tsv into a list of dicts, in file order.""" samples = [] with open(path) as f: for line in f: if line.startswith("#") or not line.strip(): continue fields = line.rstrip("\n").split("\t") if len(fields) < 4: sys.exit("bad sample line, want 4 fields: %s" % line.rstrip()) acc, sample, cellType, _hash = fields[:4] samples.append({ "accession": acc, "sample": sample, "cellType": cellType, "sampleClass": sampleClass(sample, cellType), }) if not samples: sys.exit("no samples read from %s" % path) return samples def writeMetadata(path, samples): """The sample table shown on the track UI page. A plain column name gets facet checkboxes, a leading underscore means searchable and sortable but not faceted. Accession is the primaryKey but sits last, since it is the least interesting thing about a sample. Nothing requires the primaryKey to come first: facetedComposite.js only checks that the column exists, and every use of it is by name. It is still the default sort, because accession order keeps the common cell lines together and then the HPRC samples together, which sample name in alphabetical order would scatter. Sample class is the one faceted column. Its two values, HPRC and Common Cell Line, each cover many samples, which is what a facet needs: facetedComposite.js only offers a value that occurs more than once, since a checkbox matching a single row is just a slow search box. The other three are underscored for that reason. Sample and Accession are unique per row by definition, and 12 of the 14 cell types are a single sample, so as a facet cell type drew two checkboxes and left 12 samples unreachable. Names are underscore separated rather than camelCase: the header is rendered by toTitleStyle() in facetedComposite.js, which turns an underscore into a space but does not split camelCase, so "sampleClass" would have read "sampleClass" in the table. A literal space cannot be used instead, because the saved sort order is a space separated list of column names and the submit code drops any name containing whitespace.""" with open(path, "w") as f: # A header cell may carry a longer description after a "|", which the # track UI shows behind an info icon on the column heading. f.write("_Sample\t_Cell_type\tSample_class|%s\tAccession\n" % SAMPLE_CLASS_DESCRIPTION) for s in samples: f.write("%s\t%s\t%s\t%s\n" % (s["sample"], s["cellType"], s["sampleClass"], s["accession"])) def writeColors(path): """Swatches beside a facet's checkboxes, keyed by column name. Only faceted columns get swatches, so the key has to match the column name exactly as the header writes it, underscore prefix included if it has one.""" with open(path, "w") as f: json.dump({"Sample_class": SAMPLE_CLASS_COLORS}, f, indent=4) f.write("\n") def stanza(indent, lines): """Render one trackDb stanza at the given indent, with a trailing blank.""" pad = " " * indent return "".join("%s%s\n" % (pad, l) for l in lines) + "\n" def accOverlay(gbdb, samples): """The always-on overlay of the seven common cell lines.""" byAcc = {s["accession"]: s for s in samples} out = stanza(4, [ "track fiberSeqAcc", "parent fiberSeq", "container multiWig", "aggregate transparentOverlay", "showSubtrackColorOnUi on", "type bigWig 0 100", "viewLimits 0:100", "autoScale off", "alwaysZero on", "graphTypeDefault bar", "windowingFunction maximum", "maxHeightPixels 100:50:8", "visibility full", "priority 1", "shortLabel Fiber-seq Acc", "longLabel Fiber-seq percent-accessible chromatin in seven common cell lines", ]) for acc, color in DEFAULT_OVERLAY: s = byAcc[acc] out += stanza(8, [ "track fiberSeqAcc_%s" % acc, "parent fiberSeqAcc", "type bigWig", "bigDataUrl %s/%s/all.percent.accessible.bw" % (gbdb, acc), "color %s" % color, "shortLabel %s" % s["sample"], "longLabel %s Fiber-seq percent-accessible chromatin, both haplotypes" % s["sample"], ]) return out def compendium(gbdb, dataUrlDir, samples): - """One faceted composite over all six per-sample data types. + """One faceted composite over all seven per-sample data types. Accessibility and CpG methylation are read off the same molecules in the same experiment, so they belong in one table: the user picks a sample once, and cartDump.c assigns priority with the data element as the outer loop and - the data type as the inner one, which keeps a sample's six subtracks + the data type as the inner one, which keeps a sample's seven subtracks contiguous in the image. Split across two composites they would draw as an accessibility block followed by a methylation block, and comparing the two for one sample would mean reading across every other sample. """ out = stanza(4, [ "track fiberSeqCompendium", "parent fiberSeq", "compositeTrack faceted", "type bigWig", "shortLabel Fiber-seq Compendium", - "longLabel Fiber-seq accessibility, FIRE peaks and CpG methylation " - "in %d samples" % len(samples), + "longLabel Fiber-seq accessibility, peaks, nucleosomes and CpG " + "methylation in %d samples" % len(samples), "metaDataUrl %s/fiberSeqCompendium_metadata.tsv" % dataUrlDir, "colorSettingsUrl %s/fiberSeqCompendium_colors.json" % dataUrlDir, "primaryKey Accession", # Declared order sets the order of the data type checkboxes, and of the # subtracks within each sample. No data type name may contain an # underscore: hgTrackUi globs "<composite>_*_<dataType>_sel". 'dataTypes acc|"Percent accessible" peaks|"FIRE peaks" ' - 'hap|"Haplotype accessibility" cpg|"CpG methylation" ' + 'hap|"Haplotype accessibility" nuc|"Nucleosome density" ' + 'cpg|"CpG methylation" ' 'cpgHap|"Haplotype CpG" cpgDiff|"CpG haplotype difference"', "defaultSortField Accession", "defaultGroupBy sample", "maxCheckboxes 50", "noInherit on", "visibility hide", "priority 2", ]) for i, s in enumerate(samples): acc, name = s["accession"], s["sample"] # A clean cross-product on a first visit: three samples, and the three # data types that answer the question the merge is for, accessibility # next to methylation. on = "on" if acc in DEFAULT_SELECTED else "off" # Without an explicit priority the subtracks fall back to a label sort, # which on a first visit puts a sample's data types in an arbitrary # order (Peaks, CpG, Acc). Sample order outer and declared data type # order inner matches the row of checkboxes across the top of the table. # cartDump.c replaces these with its own priorities as soon as the user # submits a selection, so this only sets the starting order. pri = lambda j: "priority %d" % (i * 10 + j + 1) out += stanza(8, [ "track fiberSeqCompendium_%s_acc" % acc, "parent fiberSeqCompendium %s" % on, "type bigWig", "bigDataUrl %s/%s/all.percent.accessible.bw" % (gbdb, acc), "shortLabel %s Acc" % name, "longLabel %s Fiber-seq percent accessible, both haplotypes" % name, "color 0,0,0", "viewLimits 0:100", "autoScale off", "alwaysZero on", "graphTypeDefault bar", "windowingFunction maximum", "maxHeightPixels 100:40:8", "onlyVisibility full", pri(0), ]) # bigNarrowPeak, so the point-source offset in the tenth column is drawn # as a tick inside the peak (lfFromEncodePeak() sets tallStart/tallEnd # from it). Its filters are the ENCODE peak settings, signalFilter and # qValueFilter, which encodePeakCfgUi() already knows how to draw; the # bigBed-generic filter.<field> settings are not read by this type. # Both defaults are the full range, so nothing is hidden until the user # narrows it. signalValue tops out near 90 and the FIRE pipeline caps # qValue at 100. pValue is -1 throughout, so no filter is offered. out += stanza(8, [ "track fiberSeqCompendium_%s_peaks" % acc, "parent fiberSeqCompendium %s" % on, "type bigNarrowPeak", "bigDataUrl %s/%s/fire-peaks.ucsc.bb" % (gbdb, acc), "shortLabel %s Peaks" % name, "longLabel %s Fiber-seq FIRE peaks" % name, "signalFilter 0", "signalFilterLimits 0:100", "qValueFilter 0", "qValueFilterLimits 0:100", "scoreFilter 0", "scoreFilterLimits 0:1000", "mouseOver <b>%s FIRE peak</b><br>FIRE score: ${signalValue}" "<br>-log10 FDR: ${qValue}<br>Score: ${score}" % name, "onlyVisibility dense", pri(1), ]) out += hapOverlay(gbdb, acc, name, "hap", "hap1.percent.accessible.bw", "hap2.percent.accessible.bw", "%s Hap1/2" % name, "%s Fiber-seq percent accessible, haplotype 1 (blue) " "and 2 (orange)" % name, "%s Fiber-seq percent accessible, haplotype" % name, "maximum", pri(2)) + # Nucleosome density is read depth, not a percentage, so unlike every + # other wiggle here it cannot have fixed viewLimits: the per-sample mean + # runs from 25 (PS00971) to 142 (GM12878) purely with sequencing depth, + # and single loci spike into the hundred thousands. autoScale per + # window is the only setting that shows all 41 samples usefully, and + # absolute values are not comparable between samples anyway. + out += stanza(8, [ + "track fiberSeqCompendium_%s_nuc" % acc, + "parent fiberSeqCompendium off", + "type bigWig", + "bigDataUrl %s/%s/all.nucleosome.coverage.bw" % (gbdb, acc), + "shortLabel %s Nuc" % name, + "longLabel %s Fiber-seq nucleosome density, both haplotypes" % name, + "color 0,158,115", + "autoScale on", + "alwaysZero on", + "windowingFunction mean", + "maxHeightPixels 100:40:8", + "onlyVisibility full", + pri(3), + ]) + out += stanza(8, [ "track fiberSeqCompendium_%s_cpg" % acc, "parent fiberSeqCompendium %s" % on, "type bigWig 0 100", "bigDataUrl %s/%s/cpg.combined.bw" % (gbdb, acc), "shortLabel %s CpG" % name, "longLabel %s CpG methylation, both haplotypes" % name, "color 0,0,0", "viewLimits 0:100", "autoScale off", "windowingFunction mean", "maxHeightPixels 100:40:8", "onlyVisibility full", - pri(3), + pri(4), ]) out += hapOverlay(gbdb, acc, name, "cpgHap", "cpg.hap1.bw", "cpg.hap2.bw", "%s CpG Hap1/2" % name, "%s CpG methylation, haplotype 1 (blue) and 2 (orange)" % name, "%s CpG methylation, haplotype" % name, - "mean", pri(4)) + "mean", pri(5)) out += stanza(8, [ "track fiberSeqCompendium_%s_cpgDiff" % acc, "parent fiberSeqCompendium off", "container multiWig", "aggregate solidOverlay", "showSubtrackColorOnUi on", "type bigWig -100 100", "viewLimits -100:100", "autoScale off", "windowingFunction mean", "maxHeightPixels 100:50:8", "shortLabel %s CpG diff" % name, "longLabel %s CpG methylation difference between haplotypes, " "by significance threshold" % name, "onlyVisibility full", - pri(5), + pri(6), ]) # Least significant first, so the more significant levels draw on top. for i, (fname, label, color) in enumerate(DIFF_LEVELS): out += stanza(12, [ "track fiberSeqCompendium_%s_cpgDiff_l%d" % (acc, i), "parent fiberSeqCompendium_%s_cpgDiff" % acc, "type bigWig", "bigDataUrl %s/%s/%s" % (gbdb, acc, fname), "color %s" % color, "shortLabel %s %s" % (name, label), "longLabel %s CpG haplotype difference, %s" % (name, label), ]) return out def hapOverlay(gbdb, acc, name, dataType, file1, file2, shortLabel, longLabel, childLongLabel, windowing, priority): """A haplotype 1 / haplotype 2 transparent overlay, used for both the accessibility and the CpG haplotype data types.""" out = stanza(8, [ "track fiberSeqCompendium_%s_%s" % (acc, dataType), "parent fiberSeqCompendium off", "container multiWig", "aggregate transparentOverlay", "showSubtrackColorOnUi on", "type bigWig 0 100", "viewLimits 0:100", "autoScale off", "alwaysZero on", "windowingFunction %s" % windowing, "maxHeightPixels 100:40:8", "shortLabel %s" % shortLabel, "longLabel %s" % longLabel, "onlyVisibility full", priority, ]) for hap, fname, color in (("h1", file1, HAP1_COLOR), ("h2", file2, HAP2_COLOR)): n = hap[1] out += stanza(12, [ "track fiberSeqCompendium_%s_%s_%s" % (acc, dataType, hap), "parent fiberSeqCompendium_%s_%s" % (acc, dataType), "type bigWig", "bigDataUrl %s/%s/%s" % (gbdb, acc, fname), "color %s" % color, "shortLabel %s Hap%s" % (name, n), "longLabel %s %s" % (childLongLabel, n), ]) return out def main(): ap = argparse.ArgumentParser(description=__doc__, formatter_class=argparse.RawDescriptionHelpFormatter) ap.add_argument("--data-dir", default="/hive/data/genomes/hg38/bed/fiberSeq", help="where the metadata and color files are written") ap.add_argument("--gbdb-dir", default="/gbdb/hg38/fiberSeq", help="bigDataUrl prefix, i.e. the symlink directory") ap.add_argument("--trackdb-dir", default=os.path.expanduser( "~/kent/src/hg/makeDb/trackDb/human/hg38"), help="where fiberSeq.ra is written") args = ap.parse_args() samples = readSamples(SAMPLE_LIST) # The faceted composite fetches these over http, from the same /gbdb path # the browser serves, so trackDb refers to them the same way. writeMetadata(os.path.join(args.data_dir, "fiberSeqCompendium_metadata.tsv"), samples) writeColors(os.path.join(args.data_dir, "fiberSeqCompendium_colors.json")) raPath = os.path.join(args.trackdb_dir, "fiberSeq.ra") with open(raPath, "w") as f: f.write("# Fiber-seq: chromatin accessibility, FIRE regulatory elements and CpG\n" "# methylation from PacBio HiFi Fiber-seq, Stergachis and Vollger labs.\n" "# Generated by hg/makeDb/scripts/fiberSeq/fiberSeqTrackDb.py.\n" "# Do not edit by hand, edit the script and regenerate.\n\n") f.write(stanza(0, [ "track fiberSeq", "superTrack on show", "shortLabel Fiber-seq", "longLabel Fiber-seq chromatin accessibility, regulatory elements and CpG methylation", "group regulation", "priority 2.5", ])) f.write(accOverlay(args.gbdb_dir, samples)) f.write(compendium(args.gbdb_dir, args.gbdb_dir, samples)) - # Per sample: acc, peaks, cpg, three container stanzas (hap, cpgHap, + # Per sample: acc, peaks, nuc, cpg, three container stanzas (hap, cpgHap, # cpgDiff) and their 2 + 2 + 4 children. - nSub = len(DEFAULT_OVERLAY) + len(samples) * (3 + 3 + 8) + nSub = len(DEFAULT_OVERLAY) + len(samples) * (4 + 3 + 8) print("wrote %s" % raPath) print(" %d samples, %d track stanzas" % (len(samples), nSub + 3)) print(" metadata and colors in %s" % args.data_dir) if __name__ == "__main__": main()