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Simple addition for an alignment length filter #4

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Simple addition for an alignment length filter #4

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9 changes: 9 additions & 0 deletions index.html
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Original file line number Diff line number Diff line change
Expand Up @@ -100,6 +100,15 @@
</div>
</div>
</p>
<p>
<div class="form-group">
Show only alignments that are
<div class="input-group">
<input id="alignment-length-threshold" class="form-control" type="number" step="any" value="0" />
</div>
nucleotides or longer.
</div>
</p>
<p>Show only alignments whose bit score is at least <input id="bitscore-threshold" class="form-control" type="number" step="any" min="0" value="0" /></p>
<p>
<div class="form-group">
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4 changes: 3 additions & 1 deletion js/blast_parser.js
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Original file line number Diff line number Diff line change
Expand Up @@ -199,6 +199,7 @@ BlastParser.prototype._sort_by_score = function(iterations) {

BlastParser.prototype._filter_by_thresholds = function(iterations) {
var evalue_threshold = parseFloat($('#evalue-threshold').val());
var alignment_length_threshold = parseFloat($('#alignment-length-threshold').val());
var bitscore_threshold = parseFloat($('#bitscore-threshold').val());
var coverage_threshold = parseFloat($('#hsp-coverage-threshold').val()) / 100;

Expand All @@ -210,7 +211,8 @@ BlastParser.prototype._filter_by_thresholds = function(iterations) {
var coverage = (hsp.query_end - hsp.query_start + 1) / query_length;
return hsp.evalue <= Math.pow(10, evalue_threshold) &&
hsp.bit_score >= bitscore_threshold &&
coverage >= coverage_threshold;
coverage >= coverage_threshold &&
hsp.alignment_length >= alignment_length_threshold;
});
// Exclude hits without any HSPs that pass filter.
return hit.filtered_hsps.length > 0;
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