I wanna create a txt file and assign data from matlab variables into this file. The point is I wanna create txt file without opening any file like in the case of "save as" in world or excel. I also want that user can choose directory and file name.

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sermet 2013-5-28

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https://ww2.mathworks.cn/matlabcentral/answers/77233-i-wanna-create-a-txt-file-and-assign-data-from-matlab-variables-into-this-file-the-point-is-i-wanna

在 MATLAB Online 中打开

for example,

p = rand(5, 3)

startingFolder = 'C:\Program Files\MATLAB'

if ~exist(startingFolder, 'dir')

    startingFolder = pwd
end

defaultFileName = fullfile(startingFolder, '*.txt*')

[baseFileName, folder] = uigetfile(defaultFileName, 'Select a file')

if baseFileName == 0

    return
end
fullFileName = fullfile(folder, baseFileName)

save(fullFileName, 'p', 'q', '-ASCII')

in here, I want that users don't have to need to open any file before saving data into this file , like in the "save as". So users would choose path and file name in the same dialog box once, then file would be saved directly without creating a blank txt file before.

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回答（1 个）

Iain 2013-5-28

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Change uigetfile to uiputfile.

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sermet 2013-5-28

thank you Lain, finally could you tell me how can I eliminate exponential display in txt file?

Iain 2013-5-28

I'm not sure you can using "save".

I'm not sure what you're really aiming for, but "dlmwrite", "csvwrite", and "xlswrite" are probably better suited to outputting nicely formatted text.

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