Development Notes

Six of the new regions [Tigray, Zanjan, Yazd, Rakhine, Veracruz, Kütahya] were large enough that I had to also enter in their areas, so that heatmaps represent samples appropriately to the most specific level of geographic resolution.

Changes to regional code positions

Bari, Ancona, Pembrokeshire - The previous positions were on the edge of the respective region and on the coast, contributing to inaccuracy by underrepresenting the likely true frequency at their centers and exaggerating the frequency at the edge, which would get less heat from neighboring regions further inland.

Vestfold Norway - By manual check I found the position I had been using was wrong - it was a place in Denmark that had a street named 'Vestfold'. The original position was computed by automated software that sometimes confuses street names with place names. I have been correcting these errors as I see them and people notify me of them.

Instructions

Use Y Heatmap Alpha or Y Heatmap Classic to generate relative frequency maps for free.

Or I can generate them for you as part my paid consulting work to advance your male line research goals.

For a free quote, contact me by email: hunter provyn at gmail dot com

Haplogroup Research Analytical Suite

I'm putting the final touches on a new set of layers that can optionally be added to the maps.

This new integrated tool combines features from the heatmaps and PhyloGeographer along with new functionality and will be called the HRAS (Haplogroup Research Analytical Suite).

A country statistics layer will indicate the total sampling rate by country and what percentage of the samples from each country are positive for the given haplogroup.

Upstream and downstream migration path layers will indicate centroids of upstream or downstream subclades as calculated by a recursive algorithm similar to PhyloGeographer. The default parameters of this algorithm can be modified by the user.

There will be a feature to compute relative frequency based on modern samples only vs a user-specified ancient time interval.

A diversification-over-time graph will be supported.

I'll give a talk about the new analytical suite at the conference Traces of the past… Genetic and traditional genealogy in archaeological, historical and socio-cultural research in Chorzow, Poland from 14:40-15:10 on Thursday, April 20, 2023.