how to concatenate two fields in a struct ?

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sandy 2013-9-6

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hi...i want to concatenate fields namels data and text data below,how to do this? textdata is the label name for the maindata...any suggestion ?

   struct(1*1)
            maindata(138*173 double)
            textdata(138*1 cell)

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Answer 1

Geert 2013-9-6

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Sandy,

it is still very unclear what you exactly want. In what format do you want your output data?

Do you want something like the following example?

cc = struct;
cc.maindata = [0 +1.193790E+1 +5.275883E+0 +1.796951E+1;
    0 +1.188781E+1 +6.487981E+0 +1.919098E+1
    0 +1.175415E+1 +5.493386E+0 +1.851824E+1];
cc.textdata = {'SAMPLE_20130606_1358'; 'SAMPLE_20130606_1408'; 'SAMPLE_20130606_1418'}
concatenateddata = cell(size(cc.maindata,1),size(cc.maindata,2) + size(cc.textdata,2));
for ii = 1:size(cc.maindata,1)
    concatenateddata{ii,1} = cc.textdata{ii};
    for jj=1:size(cc.maindata,2)
        concatenateddata{ii,jj+1} = cc.maindata(ii,jj);
    end
end

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sandy 2013-9-6

编辑：sandy 2013-9-6

YES...IT WORKS..thanks a lot Geert.THIS IS WHAT I WANT...can you see this question too < http://www.mathworks.in/matlabcentral/answers/86404-how-to-read-sts-file-in-matlab>

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Answer 2

Geert 2013-9-6

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Can you be more specific?

Do you want to convert the (double) data in maindata to a string, and concatenate it to the strings in the cell array textdata? In that case, here is an example code snippet on how to do it:

cc = struct;
cc.maindata = [1 2;3 4; 5 6];
cc.textdata = {'firststring'; 'secondstring'; 'thirdstring'}
concatenateddata = cell(3,1);
for ii = 1:size(cc.maindata,1)
    concatenateddata{ii} = [num2str(cc.maindata(ii,:)),' ', cc.textdata{ii}];
end

Please make your question more understandable.

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sandy 2013-9-6

编辑：sandy 2013-9-6

在 MATLAB Online 中打开

HI...your code concatenating both to singel cell as output,but i need output in each cell(like horzcat()) ... inside textdata(138*1) present in each cell

SAMPLE_20130606_1358   
SAMPLE_20130606_1408   
SAMPLE_20130606_1418   
.....

inisde maindata(138*173) in each cell

+1.193790E+1 +5.275883E+0 +1.796951E+1
+1.188781E+1 +6.487981E+0 +1.919098E+1
+1.175415E+1 +5.493386E+0 +1.851824E+1

i need to concatenate both,,where string and numeric in each cell of the output variable,it like below

 SAMPLE_20130606_1358   0 +1.193790E+1 +5.275883E+0 +1.796951E+1
SAMPLE_20130606_1408   0 +1.188781E+1 +6.487981E+0 +1.919098E+1
SAMPLE_20130606_1418   0 +1.175415E+1 +5.493386E+0 +1.851824E+1
SAMPLE_20130606_1428   0 +1.282015E+1 +5.903331E+0 +1.901381E+1
SAMPLE_20130606_1438   0 +1.160890E+1 +5.647130E+0 +2.120915E+1
SAMPLE_20130606_1448   0 +1.158797E+1 +5.673629E+0 +1.841896E+1

sandy 2013-9-10

see this query http://www.mathworks.in/matlabcentral/answers/86404-how-to-read-sts-file-in-matlab

there.i used importdata() to read my file and output as struct containing names and values as separate.so i used concatenate to join both to save in excel..

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