How to calculate frequencies of SNPs after meta-analysis by plink?

Question

[khn]

Hello,

Do you know how to calculate frequencies of SNPs after meta-analysis by plink? Summary stats that the plink produces do not include frequency of SNPs. So, how do you calculate it? Or do you just start using METAL as the information from plink is so limited by meta-analysis?

Thank you in advance!

[chrchang523]

With plink 2.0, if you add "cols=+a1freq" to the --glm command, allele frequencies are included in the output file.