www.gusucode.com > matlab 案例源码 matlab代码程序 > matlab/SumValuesNativelyExample.m
%% Sum Values Natively %% % Create a vector of data, |val|, and a matrix of subscripts, |subs|. val = int8(10:15); subs = [1 1 1; 1 1 1; 1 1 2; 1 1 2; 2 3 1; 2 3 2] %% % The subscripts in |subs| define a 2-by-3-by-2 multidimensional array for % the output. %% % Use |accumarray| to sum the data values in |val| that have identical subscripts % in |subs|. You can use a function handle to sum the values in their native, % |int8|, integer class by using the |'native'| option of the |sum| function. A = accumarray(subs,val,[],@(x) sum(x,'native')) %% % The result is a 2-by-3-by-2 multidimensional array of class |int8|.