how to concatenate in matlab?

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sandy
sandy 2013-8-12
A=power; load ;density;
b=_mean;_std;_max;_min;
A is a set of string in .txt file 1 and B is a set of string in .txt file 2. I need to concatenate the corresponding strings in both text files and put it in the excel sheet, such that ,i need output as,
power_mean power_std power_max power_min load_mean and so on.
It should be stored in excel in a row(1*12). its nothing like creating header or label to my values. im stuck here... help me
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sandy
sandy 2013-8-12
strings in A is present in file header_01.txt in (3*1),also strings in b in header_02.txt in(4*1).i am loading both files to A and b in cell arrays only.
Inside A, power load density ; Inside b, mean std max min
my output should be in excel file and output come like, power_mean in 1*1,power_std in 1*2 and so on.below in each cells(1*12) in excel file
power_mean power_std power_max power_min load_mean and so on.

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回答（1 个）

Andrei Bobrov
Andrei Bobrov 2013-8-12
编辑：Andrei Bobrov 2013-8-12
A={'power'; 'load' ;'density'};
b={'mean';'std';'max';'min'};
[ii,jj] = ndgrid(1:numel(b),1:numel(A));
out = reshape(strcat(A(jj),{'_'},b(ii)),1,[]);
ADD
nm = {'E:\header_01.txt','E:\header_02.txt'};
c1 = cell(1,2);
for jj = 1:2
f = fopen(nm{jj});
c = textscan(f,'%s');
fclose(f);
a1 = regexp(c{:},'\w*','match');
c1{jj} = cat(1,a1{:});
end
n = cellfun('length',c1);
[ii,jj] = ndgrid(1:n(2),1:n(1));
out = reshape(strcat(c1{1}(jj),{'_'},c1{2}(ii)),1,[]);
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sandy
sandy 2013-8-12
hi Andrei,...thanks for ur reply... but it showing error if i run this code as, ??? Undefined function or method 'full' for input arguments of type 'cell'.
Error in ==> ndgrid at 38 varargin{i} = full(varargin{i}); % Make sure everything is full
Error in ==> append at 3 [ii,jj] = ndgrid(b,A);
Andrei Bobrov
Andrei Bobrov 2013-8-12
I did all the corrections.

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