def adata():
    adata = ad.AnnData(np.zeros((100, 100)))
    adata.obsm["o"] = np.zeros((100, 50))
    adata.varm["o"] = np.zeros((100, 50))
    return adata
def poll(cls, context):
        userpref = context.user_preferences
        return (userpref.active_section == 'SYSTEM')