You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: brewermap_view.m
    path of file: ./repos/fieldtrip/external/brewermap
    
    the code of the file until where you have to start completion: function [map,scheme] = brewermap_view(N,scheme)
% An interactive figure for ColorBrewer colormap selectio
    
function bmv2D3D(h,~)
		% Switch between 2D-line and 3D-cube representation.
		%
		if get(h,'Value') % 2D
			set(H.ax3D, 'HitTest','off', 'Visible','off')
			set(H.ax2D, 'HitTest','on')
			set(H.pt3D, 'Visible','off')
			set(H.ln2D, 'Visible','on')
		else % 3D
			set(H.ax2D, 'HitTest','off')
			set(H.ax3D, 'HitTest','on', 'Visible','on')
			set(H.ln2D, 'Visible','off')
			set(H.pt3D, 'Visible','on')
		end
		%
		bmvUpDt();
	end
%
	function bmvChgS(~,e)
		% Change the color scheme.
		%
		scheme = get(e.NewValue,'String');
		%
		bmvUpDt()
	end