Home > chronux_1_50 > spikesort > CORE_histxt.m

CORE_histxt   Windows

PURPOSE ^

CORE_HISTXT Core computational routine for HISTXT.

SYNOPSIS ^

function C = CORE_histxt(X,d)

DESCRIPTION ^

CORE_HISTXT       Core computational routine for HISTXT. 
   C = CORE_HISTXT(X,D), where X is an M x N matrix, returns a D x N
   matrix C such that C(i,j) = #[X(:,j)=i].

   CONDITIONS
   ----------
   X must only contain integer values between 1 and D.
   X must be of type double.

CROSS-REFERENCE INFORMATION ^

This function calls: This function is called by:

SOURCE CODE ^

0001 function C = CORE_histxt(X,d)
0002 %CORE_HISTXT       Core computational routine for HISTXT.
0003 %   C = CORE_HISTXT(X,D), where X is an M x N matrix, returns a D x N
0004 %   matrix C such that C(i,j) = #[X(:,j)=i].
0005 %
0006 %   CONDITIONS
0007 %   ----------
0008 %   X must only contain integer values between 1 and D.
0009 %   X must be of type double.
0010 
0011 C = hist(X,1:d);
0012 
0013 
0014 return;
0015 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
0016 %%%%%%%%%%%%%%%%%%%%%%%%%%%%% TEST CODE %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
0017 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
0018 % data = ceil(256*rand(1e5,10));
0019 % tic; counts = CORE_histxt(data,256);  t(1) = toc;
0020 % tic; counts2 = hist(data,1:256); t(2) = toc;
0021 % printf('CORE_histxt took %5.3f sec and equivalent native code took %5.3f sec.', t(1), t(2));
0022 % if (~isequal(counts,counts2))
0023 %     printf('The two calls did not produce the same results.');
0024 % end

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