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aea29c8517 Alis*0001 function [varargout] = stats(A)
0002 % stats(A) writes the basic statistics of the A to the terminal which
0003 % are i) the minimum finite value
0004 % ii) the maximum finite value
0005 % iii) the mean of the finite values
0006 % iv) the S.D. of the finite values ( RMS of [A-mean] )
0007 % v) the fraction of non-finite elements excluded from calculations
0008 %
0009 % e.g.
0010 % >> stats(topo)
0011 % Min -4555 Max 0 Mean -2331.07 SD 1207.3441 N-Z 1024/1024
0012 %
0013 % [Min Max Mean SD]=stats(topo); returns the statistics in Min, Max,
0014 % Mean and SD and does not write to the terminal.
7f0effbc3a Jean*0015
73a5ad7d56 Alis*0016 A=A(:);
aea29c8517 Alis*0017
0018 %ii=find(A~=0);
0019 ii=find(isfinite(A));
0020 if isempty(ii)
0021 ii=1;
0022 end
0023 sZ=prod(size(A));
0024 minA=min(A(ii));
0025 maxA=max(A(ii));
0026 meanA=mean(A(ii));
0027 sdA=sqrt( mean( (A(ii)-meanA).^2 ) );
22586ff4d2 Alis*0028 rmsA=sqrt( mean( A(ii).^2 ) );
73a5ad7d56 Alis*0029 nZ=sum(~isfinite(A));
aea29c8517 Alis*0030 switch max(nargout)
0031 case {0}
22586ff4d2 Alis*0032 % disp( ...
0033 % sprintf('Min %0.5g Max %0.5g Mean %0.5g SD %0.5g NaN %i/%i',...
0034 % minA,maxA,meanA,sdA,nZ,sZ) );
aea29c8517 Alis*0035 disp( ...
22586ff4d2 Alis*0036 sprintf('Min %0.5g Max %0.5g Mean %0.5g RMS %0.5g NaN %i/%i',...
0037 minA,maxA,meanA,rmsA,nZ,sZ) );
aea29c8517 Alis*0038 case {1}
0039 varargout(1)={minA};
0040 case {2}
0041 varargout(1)={minA};
0042 varargout(2)={maxA};
0043 case {3}
0044 varargout(1)={minA};
0045 varargout(2)={maxA};
0046 varargout(3)={meanA};
0047 case {4}
0048 varargout(1)={minA};
0049 varargout(2)={maxA};
0050 varargout(3)={meanA};
0051 varargout(4)={sdA};
0052 otherwise
0053 error('Too many return arguments requested')
0054 end
