support for numpy arrays and ds.mean/sum/var/minmax/cov/correlation
support for numpy arrays and ds.mean/sum/var/minmax/cov/correlation

maartenbreddels/vaex,maartenbreddels/vaex,maartenbreddels/vaex,maartenbreddels/vaex,maartenbreddels/vaex,maartenbreddels/vaex