Question: PLINK: merge .bed files
1
gravatar for bsmith030465
4.1 years ago by
bsmith030465150
United States
bsmith030465150 wrote:

Hi,

I had a set of .bed,.bim, .fam files (myfile1.bed, myfile2.bed, ...) that I wanted to merge to get one file in .bed , bim, fam format.

I am trying:

<p>plink --file myfile1 --merge-list all_my_files.txt --make-bed --out mymerged</p>

 

where all_my_files.txt is a file containing the filepaths for the files I want merged (myfile2, myfile3, ....)

However, I get the following error:

<p>ERROR: No file [ myfile1.ped ] exists.</p>

 

How can I specify that I want my bed (and not ped) files merged into a new bed file?

 

many thanks!

plink • 13k views
ADD COMMENTlink modified 4.1 years ago by deepue110 • written 4.1 years ago by bsmith030465150
1

Aren't you merging binary files? You should use --bfile:

plink --bfile myfile1 --merge-list all_my_files.txt --make-bed --out mymerged

 

ADD REPLYlink written 4.1 years ago by alesssia520

Hi alesssia,

Thanks for that. My command is now:

plink --bfile myfile1 --merge-list all_my_files.txt --make-bed --out mymerged

 

and my 'all_my_files.txt' now contains:

myfile10.bed

myfile10.bim

myfile10.fam

myfile11.bed

myfile11.bim

myfile11.fam

.

.

.

 

Does this look like the right command, and does my file list contain the correct nomenclature/order of the files?

thanks!!

ADD REPLYlink written 4.1 years ago by bsmith030465150
1

http://pngu.mgh.harvard.edu/~purcell/plink/dataman.shtml#mergelist

ADD REPLYlink written 4.1 years ago by alesssia520

Hi Alesssia,

thanks!

ADD REPLYlink written 4.1 years ago by bsmith030465150
0
gravatar for deepue
4.1 years ago by
deepue110
Finland
deepue110 wrote:
plink --bfile myfile1 --bmerge-list all_my_files.txt --make-bed --out mymerged

should work.

ADD COMMENTlink written 4.1 years ago by deepue110

The --merge-list (without a preceding 'b') flag is also used to merge multiple binary filesets; see alesssia's link.

Note that you cannot split a fileset across multiple lines of the --merge-list file; i.e. bsmith030465's sample all_my_files.txt is not in the correct input format.  Either fully spell out all three filenames on the same line in .bed-.bim-.fam order, or include just the common prefix (this latter mode is only supported by PLINK 1.9).

ADD REPLYlink written 4.1 years ago by chrchang5235.5k
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