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How can I modify a part of my text file

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Izem 2020-9-7

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关闭： Rik 2020-9-8

Hello everyone,

I have a .dat file like in the picture and I would like to modify I3 values (the last column). I want to replace the values by (old values+Delta(m,n)) .

I can't use textscan since the beginning of the file has a different format. Do you have any idea on how can I do this ?

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KSSV 2020-9-7

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Why you cannot use textscan? You can give headerlines in textscan and skip the initial lines.

Izem 2020-9-7

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Thank you for your answer! But please how ? do you have an example ?

KSSV 2020-9-7

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Attach your text file.

Izem 2020-9-7

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I am really sorry, I cant because it's a .m01 file but I read it as a text file. It s exactely as in the picture, the headerline is 9.

I can take care of details, I Just need the important part of the algorithm

Izem 2020-9-8

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Matlab.txt

Hello! I wrote it in this text file, please find it attached

Rik 2020-9-8

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How is this question different from you previous question?

Izem 2020-9-8

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t is not different. I accpeted your answer before testing it and I apologize for that. but It is not working for me, I have these errors :

-'readfile' is not found in the current folder or on the MATLAB path, but exists in, but that's ok when I change it to fileread

-Brace indexing is not supported for variables of this type. I tried some solution but did'nt work

Izem 2020-9-8

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在 MATLAB Online 中打开

I can modify the text file using textscan like this :

            fip = fopen(['InputPidSidelinef',num2str(f(c)),'.dat']);
            C = textscan(fip,'%s %s %f');
            
            fic = fopen(newname);
            delta = C(:,3);
            correction = delta{1,1};
            data = textscan(fic,'%f %f %f %f %f %f %f','headerLines',8);
            vals = data{7};
            for i=1:length(vals)
                data{7}(i) = data{7}(i)+correction(i);
            end
            

But hwo can I store all the data and write it back ?

Izem 2020-9-8

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@Rik can you please help! I am really strugling with this..

Rik 2020-9-8

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You need to get my readfile function from the FEX or with the add-on explorer. Did you do that?

Izem 2020-9-8

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I don't know what FEX or add-on explorer mean, can you please just tell me how can I store data and write it back after using textscan as in my previous comment.

what you did last time : 'str=data{n};' was not working

So do you have any idea how can I do it ?

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