change .705 file format to PLINK

The .705 file is a very efficient and specific file format top store SNP #genomic data. This video shows how to change it to a classic ped format that could be loaded in #PLINK
.705 file format description: interbull.org/...
Small example data: github.com/Gen...

[@glenndorsey9068]

Your videos are invaluable to me. I learn something new from each one. I don’t use 705 files but I do have data I have to process with r prior to loading into plink and I learned a new technique from your code. I wish you would focus one session on different ways plink handles allele coding. For example when to use -keep allele coding and merging AB coded files with atgc. Thanks again for all your help.

[@GenomicsBootCamp]

Thanks for the idea! I tried to cover the most frequent topics for PLINK data handling, but it the list is likely not complete. I might go through it again, creating a series shorter, but on point vireos for using all the features.
As for your question, there is a simlar video on the channel, changing between TOP and FORWARD coding. Changing from/to AB coding is similar. The key is to find a reliable conversion file.
The link to the video I mentioned: ua-cam.com/video/RhHI0lwXDNI/v-deo.html

[@alkamilalkamil8009]

Very useful technique, really amazing videos and of high values, thanks ,
Here you chose one set of data of 20, but what about the others?
I mean if you have different sources of data that let us say 60k , 50k or others in this way we can adjust all to 60k or the opposite?

[@GenomicsBootCamp]

I am not sure if I get your question correctly. The 20 SNPs were only as an example. If you have lines with 60K SNPs, you enter that particular number, to select rows with the same number of SNPs, and then transform to ped file.