I am trying to generate a structure file through PGDSpider, for a diploid organism, where each locus is in two consecutive columns in one row, rather than data for each individual be stored as 2 consecutive rows, where each locus is in one column (as mentioned as one option in structure format: https://web.stanford.edu/group/pritchardlab/software/structure22/readme.pdf). In the spid file, I defined: # What is the ploidy of the data? VCF_PARSER_PLOIDY_QUESTION=DIPLOID_ONE_ROW (http://www.cmpg.unibe.ch/software/PGDSpider/PGDSpider%20manual_vers%202-1-1-5.pdf). However, the output still have each individuals be stored as 2 consecutive rows rather than in one row. Just wondering whether you have any suggestions for it.