importFrom("stats", "lm")
importFrom("utils", "combn")
importFrom("tcltk","setTkProgressBar","tkProgressBar")
importFrom("emmeans", "emmeans","contrast")
importFrom("car", "Anova", "lht")
importFrom("multcomp","cld")
importFrom("lpSolve","lp")
export(N_to_design, design_to_N, Cmatrix, A_eff, D_eff, ibd, bibd, btib, ibdtvc, is.proper, is.equir, is.connected, is.vb,is.orthogonal,aov.ibd, is.wholenumber, ccmat_LP, ccmat, A_eff.NNP, check.validity.NNP, interchange.NNP, LIP, ibdgen, do.exist.NBIB, NLIP, btib1, check.orthogonality,btibgen,g,gts, design, N, Information.Matrix, randomize)