import(MASS, survey)
export(svycollinear, svyCooksD, svydfbetas, svydffits, svyhat, svystdres, svyvif, Vmat)
importFrom("graphics",
    "abline",
    "plot")
importFrom("stats",
    "dnorm",
    "glm.fit",
    "model.matrix",
    "predict",
    "residuals",
    "var",
    "vcov",
    "weighted.mean")
importFrom("utils",
    "head")
importFrom("Matrix",
    "bdiag")
