function clim=dbdyn_calc2(cmin,cmax,datax)
%
% cmin = minimum level ([]=use data min);
% cmax = maximum level ([]=use data max);
% Set cmin=-999 and cmax=dbdyn to get max of data set with dbdyn dynamic range.
if isempty(cmin), 
	dmin=min(min(datax)); 
else, 
	if cmin==-999, 
		dmax=max(max(datax)); dmin=dmax - abs(cmax);
	else
		dmin=cmin; 
	end
end
if isempty(cmax), dmax=max(max(datax)); elseif cmin~=-999, dmax=cmax; end
if dmin==dmax, dmax=dmin + 1; end;
clim=[dmin dmax];
%
% COPYRIGHT (c) 2008
% 
% Applied Research Laboratories, The University of Texas at Austin
% (ARL:UT)
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% IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
% PURPOSE, OR NONINFRINGEMENT.
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