saving matrix using fprintf in .txt file with different formatSpec

Question

sermet OGUTCU 2021-10-8

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1469671-saving-matrix-using-fprintf-in-txt-file-with-different-formatspec

评论： Star Strider 2021-10-9

data=[2 0.232 0.333 0.421 0.111;3 0.111 0.252 0.385 0.600;4 0.500 0.620 0.100 0.210];
startingFolder='C:\Program Files\MATLAB';
if ~exist(startingFolder, 'dir')
    startingFolder = pwd;
end
defaultFileName=fullfile(startingFolder, '*.txt');
[baseFileName, folder]=uiputfile(defaultFileName, 'Select a file');
if baseFileName == 0
    return
end
fullFileName = fullfile(folder, baseFileName);   %fullfile=building file
fid = fopen(fullFileName, 'w');
fprintf(fid, '%*s\n\n', 15, 'Clock_comparisons_uncorrected (** GPS **)');
fprintf(fid,'%*s %*s %*s %*s %*s\n',1,'PRN',1,' RMS(ns)', 1, 'RMS(m)', 1, 'STD(ns)', 1, 'STD(m)');
% ...

After the last line, I need to print data matrix in the txt file (after the PRN RMS(ns) RMS(m) STD(ns) STD(m) header) as following:

2 0.2320 0.3330 0.4210 0.1110

3 0.1110 0.2520 0.3850 0.6000

4 0.5000 0.6200 0.1000 0.2100

I tried the following codes, but formatSpec cannot be seperated for each column so the values of first columns are printed with three digits after the integer.

fmt = [repmat('%.3f ', 1, 4), '%.3f\n'];
fprintf(fid, fmt, data');

I also used the following code using different arrays for each column, but this time orders of columns and rows are not the same as the data matrix.

fprintf(fid,'%.0f %.3f %.3f %.3f %.3f\n',column_1, column_2, column_3,column_4,column_5);

My matlab version is 2019a.

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Star Strider 2021-10-8

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1469671-saving-matrix-using-fprintf-in-txt-file-with-different-formatspec#answer_804236

Try something like this —

data=[2 0.232 0.333 0.421 0.111;3 0.111 0.252 0.385 0.600;4 0.500 0.620 0.100 0.210];
fid = 1;                                                                                    % Standard Output For Simplicity
fprintf(fid,'%.0f %.3f %.3f %.3f %.3f\n', data.')
2 0.232 0.333 0.421 0.111
3 0.111 0.252 0.385 0.600
4 0.500 0.620 0.100 0.210
fclose(fid);                                                                                % Remember To Close The File When You HJave Finished Writing To It (Or Reading From It)