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Plink beginner help please - excluding Chr 0

I'm trying to --make-bed from a pre QC file but get the following: 'Invalid bp coordinate on line 1 of .map file' I think its because I have several Chr 0 lines. I've tried to exclude as I think its because they are from Affymetrix chip (see PLINK .bim file shows chromosome 0 on Affymetrix chip ) but I cant get this function to work properly. This is what i'm trying:

--file pre_qc_data --exclude Chr 0 --out pre_qc_data

Any help (for a beginner, sorry!) much appreciated. KCT

plink gwas chromosome 0
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written by KCT • KCT

plink --b/file data_to_qc --chr 1-22 --make-bed --out pre_qc_data

This will give Chr 1-22 in output.

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written by Bioinformatics_NewComer Bioinformatics_NewComer

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