How to write strings and numbers to a text file

Question

Shiva Teja Golla 2019-2-5

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/443280-how-to-write-strings-and-numbers-to-a-text-file

回答： cui,xingxing 2022-9-5

Hi,

I need to write a data whcih comprises strings and numbers to a text file (as shown below). The data is repetitive with some changes ( the text in bold changes every time). So, I want to use a loop to write this data to a text file . How can I do it through matlab...

Any help and ideas are appreciated....

*DIM,table_press_data_1,TABLE,6146,120,1,PN,PT

*TREAD,table_press_data_1,'press_data_1','csv','',0

*DIM,array_press_data_1,ARRAY,6146,120,1,,,

*DO,i,1,TMSTPNUM1,1

*VFUN,array_press_data_1(1,i),COPY,table_press_data_1(1,i)

*ENDDO

*DIM,table_press_data_2,TABLE,6146,120,1,PN,PT

*TREAD,table_press_data_2,'press_data_2','csv','',0

*DIM,array_press_data_2,ARRAY,6146,120,1,,,

*DO,i,1,TMSTPNUM2,1

*VFUN,array_press_data_2(1,i),COPY,table_press_data_2(1,i)

*ENDDO

*DIM,table_press_data_3,TABLE,6146,120,1,PN,PT

*TREAD,table_press_data_3,'press_data_3','csv','',0

*DIM,array_press_data_3,ARRAY,6146,120,1,,,

*DO,i,1,TMSTPNUM1,1

*VFUN,array_press_data_3(1,i),COPY,table_press_data_3(1,i)

*ENDDO

..........................................................

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KSSV 2019-2-5

USe Strcat to get the strings and write them using fprintf

Shiva Teja Golla 2019-2-5

How to get this line

*TREAD,table_press_data_1,'press_data_1','csv','',0

This line incluse some text which shound be in ' '.

How to get this line in the required format.

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Answer 1

Suryaansh Mata 2019-6-18

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https://ww2.mathworks.cn/matlabcentral/answers/443280-how-to-write-strings-and-numbers-to-a-text-file#answer_379660

To write the data onto a file in MATLAB save the data as a string (concatenate using the 'strcat' function) and use the 'fprintf' command to write onto a text file. In order to incorporate a ' into your string use double ' , i.e. str = 'John''s' will store the string John's into the variable str.

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Answer 2

Jan 2019-6-18

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/443280-how-to-write-strings-and-numbers-to-a-text-file#answer_379686

编辑：Jan 2019-6-18

在 MATLAB Online 中打开

Do you really want to create:

*DIM,table_press_data_1,TABLE,6146,120,1,PN,PT
*TREAD,table_press_data_1,'press_data_1','csv','',0
*DIM,array_press_data_1,ARRAY,6146,120,1,,, 
*DO,i,1,TMSTPNUM1,1
   *VFUN,array_press_data_1(1,i),COPY,table_press_data_1(1,i)
*ENDDO
...

Or is "table_press_data_1" a placeholder for something?

To get the shown text:

pattern = [ ...
    '*DIM,table_press_data_%d,TABLE,6146,120,1,PN,PT\n', ...
    '*TREAD,table_press_data_%d,''press_data_%d'',''csv'','',0\n', ...
    '*DIM,array_press_data_%d,ARRAY,6146,120,1,,, \n', ...
    '*DO,i,1,TMSTPNUM1,1\n', ...
    '  *VFUN,array_press_data_%d(1,i),COPY,table_press_data_%d(1,i)\n', ...
    '*ENDDO\n\n'];
[fid, msg] = fopen(FileName, 'w');
assert(fid ~= -1, 'Cannot open file %s: %s', FileName, msg);
for k = 1:17
    fprintf(fid, pattern, repmat(k, 1, 6));
    % Perhaps this is faster:
    % fwrite(fid, strrep(pattern, '%d', sprintf('%d', k)), 'char');
end
fclose(fid);