Hi everybody,  I want to use GCTA to estimate variance components. My data is for horse species. 

This program doesn't recognize the command: 

> gcta64  --reml  --grm r --pheno remel.phen.txt  --reml-pred-rand
> –qcovar tt.qcovar.txt  --out test1

*The following error occurs:  Error (invalid option "--qcovr.txt")*

my format of tt.qcovar.txt : (no header line; columns are family ID, individual ID, sex, EBV)


How can I solve my problem?

I appreciate your guiding me regarding this. 
Thanks

Hi, it is likely due to the fact that you are using an em-dash, as follows:

    –qcovar

It should, however, be two hyphens, like this:

    --qcovar

Kevin

