@deckyard/strider

Reads a STRidER STR allele-frequency export in XML, which holds every population at once, and converts the population you choose into the FrequencyDb that @deckyard/forensicgenetics computes with. Frequencies are kept as published.

Manual: https://deckyard.github.io/deck-strider-frequency-converter/

Install

Requires Jennifer 0.25.0 or newer. Neither this deck nor its dependency is in the public registry yet, so point jvc at this repository; the manifest carries the [sources] entry for @deckyard/forensicgenetics:

jvc source @deckyard/strider https://github.com/deckyard/deck-strider-frequency-converter.git
jvc add @deckyard/strider
jvc install

This vendors both decks under vendor/deckyard/. Without jvc, copy the src/ of both (from a checkout or a deckyard-strider-<version>.tar.gz release archive):

mkdir -p vendor/deckyard/strider vendor/deckyard/forensicgenetics
cp path/to/deck-strider-frequency-converter/src/*.j vendor/deckyard/strider/
cp path/to/deck-forensicgenetics/src/*.j            vendor/deckyard/forensicgenetics/
rm -f vendor/*/*/*_test.j

Example

use fs;
import "@deckyard/strider/" as strider;
import "@deckyard/forensicgenetics/" as forensics;

def t as strider.Table init strider.parse(fs.readString("strider.xml"));
strider.populations($t);                  # ["Entire Database", "Europe", "AUSTRIA", ...]
strider.frequencySums($t, "AUSTRIA");     # locus -> sum, each ~1.0 for a sound table
def db as forensics.FrequencyDb init strider.toFrequencyDb($t, "AUSTRIA", "STRidER AT");

Data

The deck ships no real STRidER table. STRidER's terms of use reserve redistribution and permit downloads for private, non-commercial use only; download the XML yourself from https://strider.online/frequencies/xml. testdata/frequencies.xml is synthetic.

Tests

jennifer test src/strider_test.j
jennifer run examples/readtable.j [export.xml] ["POPULATION"]

Licence

LGPL-3.0-only, see LICENSE. Copyright (C) 2026 mplx <[email protected]>.