def pcaplot(x=None, y=None, z=None, labels=None, var1=None, var2=None, var3=None, axlabelfontsize=9,
            axlabelfontname="Arial", figtype='png', r=300, show=False, plotlabels=True, dim=(6, 4), theme=None):
    if theme == 'dark':
        general.dark_bg()
    if x is not None and y is not None and z is None:
        assert var1 is not None and var2 is not None and labels is not None, "var1 or var2 variable or labels are missing"
        plt.subplots(figsize=dim)
        for i, varnames in enumerate(labels):
            plt.scatter(x[i], y[i])
            if plotlabels:
                plt.text(x[i], y[i], varnames, fontsize=10)
        general.axis_labels("PC1 ({}%)".format(var1), "PC2 ({}%)".format(var2), axlabelfontsize, axlabelfontname)
        general.get_figure(show, r, figtype, 'pcaplot_2d', theme)
    elif x is not None and y is not None and z is not None:
        assert var1 and var2 and var3 and labels is not None, "var1 or var2 or var3 or labels are missing"
        # for 3d plot
        fig = plt.figure(figsize=dim)
        ax = fig.add_subplot(111, projection='3d')
        for i, varnames in enumerate(labels):
            ax.scatter(x[i], y[i], z[i])
            if plotlabels:
                ax.text(x[i], y[i], z[i], varnames, fontsize=10)
        ax.set_xlabel("PC1 ({}%)".format(var1), fontsize=axlabelfontsize, fontname=axlabelfontname)
        ax.set_ylabel("PC2 ({}%)".format(var2), fontsize=axlabelfontsize, fontname=axlabelfontname)
        ax.set_zlabel("PC3 ({}%)".format(var3), fontsize=axlabelfontsize, fontname=axlabelfontname)
        general.get_figure(show, r, figtype, 'pcaplot_3d', theme)