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/region/[coordinates]/ancestry

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Data Source

• The page queries https://api.catalog.igvf.org/api/variants/gnomad-alleles?region={coordinates} and maps the response into population-specific frequency fields (AFR, AMI, AMR, ASJ, EAS, FIN, NFE, SAS).
• Variants with a maximum allele frequency below the selected threshold are filtered out before any plots render.

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Controls

• Minimum Allele Frequency slider (0–0.20) filters the variant list; counts in the statistics card update in real time.
• Bin Settings allow switching between fixed deciles (0–1, step 0.1) or dynamically computed bins for the per-population histograms.

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Visualisations

• The population distribution bar chart summarises how many variants carry non-zero frequency in each ancestry group.
• Histograms for each population show the distribution of allele frequencies given the current filters and binning mode.
• The heatmap ranks variants by how many populations keep them below 5% frequency, highlighting rare or population-specific signals so you can decide whether to pursue functional annotations elsewhere in the catalog.