Today GEDmatch launched a version of my segment mapper which is integrated with their database. It can be used as a way to easily visualize multiple matches on GENESIS. This first version shows how everyone compares to the first person on the list, like the current 2D chromosome browser but more compact. Also each color is a person.
One way to get a display like this at Genesis is to check the boxes (tier 1 only) next to your best matches in the one-to-many (up to 40 of them) and then click the button “Visualization” at the top of the page. Another way to get there is to use the Tier 1 tool “MultiKit Analysis” and select the kits you want to look at. Remember the first kit listed is the one that all the others will be compared to.
Once you are on the visualization page, at the bottom of the Chromosomes & Segments display there is a button called “Compact Map” which will make a chromosome map like the one above. I put a red arrow next to it in the image below.
If you have not yet played with Genesis, which will ultimately be the main GEDmatch site, here is a reason to try it. Your user id from GEDmatch will work on Genesis. Many kits are already migrated over. If yours is not yet moved over, you could just go aheas and upload your raw DNA file there. As you may already know, new 23andme kits and LivingDNA kits can only be uploaded to Genesis and not the old GEDmatch because they use the new chip.
I confess, I offered to sell my segment mapper code to them as I thought it would vastly improve their display functionality. I also agreed to support it and occasionally do additional work for them. How many of you knew I was a programmer as well as a blogger? And yes I have been doing alot of coding this week which is why I have not been blogging!
My next idea is to include everyone’s match to everyone else with one color per person and then indicate who they match where in those mouse over boxes. This would be a multi-way version of this chromosome browser, so a compact way to see your family triangulations. It is almost ready.
By the way another wonderful feature at Genesis is that you can select a group of kits to use for triangulation in the Tier 1 multi kit analyis. The way that works is when two of those kits have a three way match with the first kit, the match is displayed.
I am really excited about my segment mapper’s new home at Genesis. Give it a try and let me know what you think!