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You can install the {{man label|DNA Segment Map Gramplet}} on the bottombar of one of the People or Relationship category list views.
Initially the {{man label|DNA Segment Map Gramplet}} with no DNA information (chromosome data) is empty as the purpose of this gramplet is to view DNA segment data for the active user and a set of associated users. Once the user has done an autosomal DNA test and uploaded their data to one of the [[#Getting_the_chromosome_data|vendors]] (GEDmatch or FamilyTreeDNA, for example), the vendor can calculate the shared DNA segments with others in their system. These list of people with their shared segments are input to this gramplet for visualization.
Each person with shared segments will be a separate Association. The Notes in the Association should contain the shared segment info as calculated by the vendor.
====Configuration====
The following are capabilities that are currently disabled but can be enabled if user desire. These add complications to the user interface and are deemed not beneficial
The <code>[map]</code> section of the gramplets config file <code>DNASegmentMap.ini</code> has the following options. Remove the comment (double semi-colon) and edit as needed while Gramps is not started. Changes are not reflected until the next time the Gramps is started.
==== Example ====
[[File:DNA-SegmentMapGramplet-addon-Associations-Note-with-DNA-data-example-60.png|thumb|600px|right]]
Create an Association of type DNA as described in the [[Gramps_{{man version}}_Wiki_Manual_-_Entering_and_editing_data:_detailed_-_part_1#Associations|Association]] page to Person A. Add a Note with the DNA shared segment data. Set the Note private if you do not want the data printed in reports. (For this example use the [[#DNA_Example_data|DNA Example data]] above.)
{{-}}
[[File:DNA-SegmentMapGramplet-addon-PersonReferenceEditor-example-60.png|thumb|600px|right]]
=== Reference Info ===
==== Centromere Areas ====
Machines have difficulties to read the area around the centromere. There are less SNPs to read, therefore there is higher probability of false positive matches. For example, if you have a match exactly around the centromere, then it is most probably a false positive match. The area of the centromere id dependent on the Build (36, 37, or 38). For example, the list for Build 37 (the most common) is
</pre>
== Issues ==
* When the user has no DNA data, have the gramplet still show a blank chromosome chart & legend with a message link to this page?
* Legend with rollover tooltip does not work (win 10)
=== Future feature To Do ===
* Add user config to specify the Association Type. Currently, the Association Type of DNA is used for this gramplet. It could be made user-controllable.
=== History ===
* DNA Segment Map gramplet [https://github.com/gramps-project/addons-source/pull/550 Pull Request #550] (GitHub pre-release) Jun 25, 2023
* [https://gramps.discourse.group/t/updated-dna-gramplet-ready-for-review/807 Updated DNA gramplet ready for review], Discourse forum discussion on the DNAgramplet; 15th of October, 2020
== See also ==
* [[Addon:DNAMatches|DNA Matches gramplet]] addon presents the users with a table of people whose DNA has a match with the currently selected person.
* [[Addon:SyncAssociation|Sync Association]] addon tool - For every Association, if there is not a reciprocal Association then it will be created. That is, where Person John Smith has a DNA Association (with an Association Note) to Person Jane Jones, then if Jane Jones does not have a corresponding DNA Association to John Smith, it will be created which shares the Note.
* [[Addon:SyncAssociation#Add_Types_to_the_Sync_Association_tool|Add Types to the SyncAssociation tool]]
* [[Gramps_{{man version}}_Wiki_Manual_-_Entering_and_editing_data:_detailed_-_part_1#Associations|Introduction to Associations in Gramps]]
* [[Roles, Relationships & Associations]]
* [[Genetics]]
* [https://thegeneticgenealogist.com/2016/11/21/visual-phasing-an-example-part-1-of-5 Visual Phasing: An Example (Series of 5 parts)], By The Genetic Genealogist, 21st November 2016
[[Category:Plugins]]
[[Category:Addons]]