isTargetChart.m
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	function tf = isTargetChart(hThis,hTarget)
	% ISTARGETCHART Is the Target a permitted chart object
	%
	% See also: graphics.Cursorbar.isTargetAxes, graphics.Cursorbar.
	%
	% Thanks to <a href="http://www.mathworks.com/matlabcentral/profile/authors/3354683-yaroslav">Yaroslav Don</a> for his assistance in updating cursorbar for
	% MATLAB Graphics and for his contribution of new functionality.

	% Copyright 2015-2016 The MathWorks, Inc.

	% set the target
	if nargin<2
	hTarget = hThis.Target;
	end

	% return empty if there is no Target
	if isempty(hTarget)
	tf = [];
	return
	end
	%
	if ~all(ishandle(hTarget))
	tf = false(size(hTarget));
	return
	end

	% check
	tf = arrayfun(@isChart,hTarget);

	function tf = isChart(hTarget)
	switch class(hTarget) % fastest comparison with switch
	case graphics.Cursorbar.PermittedChartTargets
	tf = true;
	otherwise
	tf = false;
	end