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First version of the DNA Segment Mapper is Released

So many people were trying to use my DNA chromosome mapper tool to look at a picture of their DNA relatives’ matching segments that I realized that another tool was needed to meet that demand. The first version of the new DNA segment mapping tool is ready. More information is at http://blog.kittycooper.com/tools/segment-mapper/

Sample Output from the DNA Segment Mapper

Sample Output from the DNA Segment Mapper

 

The DNA Segment mapper can show the matching DNA from up to 40 people in a chromosome style chart. Here is what my Dad’s top 40 matches look like (names are removed). The first two are first and third cousins once removed.

There is a page under tools above with more complete description and documentation.

Results in from my Double 3rd Cousin!!

According to family lore, when their business needed money my great-grandmother Charlotte Langermann Thannhauser, on my German Jewish side,  fixed up her sister Lina with her husband’s half brother in order to get Lina’s dowry invested in the family enterprise. Not such an uncommon occurrance. I was able to convince Lina’s great-granddaughter on the straight maternal line to test at 23andme. She is almost doubly my third cousin, sharing DNA from the Thannhauser and Langermann lines but not Engel.Dbl3rdCousin

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Chromosome Mapping Tool Released

The DNA segment chromosome mapping tool is now released for all to try. This is the current URL:

http://kittymunson.com/dna/ChromosomeMapper.php

and the documentation is here:

http://blog.kittycooper.com/chromosome-mapper/

Thanks to all the testers, I think the bugs have been found and fixed. The next release will have some enhancements so make your suggestions here. So far I expect to add the following features:

  • ignore the side column so alternately chose a side and color
  • better error reporting and more bullet proof
  • add a third option and thus line on the chromosomes for unknown or both
  • add a note column that is part of what appears on mouse over with the MRCA
  • allow selection of colors
  • make a version designed to show overlaps on unknown relatives

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First version of Chromosome Mapping Tool

I am looking for more testers and some feedback on the colors. Click the read more for more images. Yes my data has a small bug for chromosome 1 and 9 :). In the actual tool mousing over the color tells you the ancestor, the segment size, and start and stop points. The actual output is much larger than the image below.

ChromMapper

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Building a Color Coded Chromosome Mapping Tool

I am starting work on a web based program that will generate color-coded images of the chromosome segments inherited from your ancestors on an image of all 23 of your chromosomes. Cece Moore has done this by hand and that is the model for what this program will do. Click here for the sample image  she posted in her geni.com blog article about autosomal DNA testing

The first release will just take your spreadsheet and make a picture. That spreadsheet will have the same columns as the family inheritance compare at 23andme (or chromosome compare at ftDNA and GEDmatch) plus 3 new columns, side (paternal or maternal), MRCA(s) and optional color choice for each MRCA. Initially 16 ancestors can be plotted. A color palette can be chosen instead of specific colors and that will include a grayscale for the color blind.

So I solicit all your suggestions. I am reposting here some of the thoughts of my fellow DNA-NEWBIE mailing list members, brought to us by ISOGG

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