How to find a folder in the PC ?

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Peter Kerekes 2018-4-10

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https://ww2.mathworks.cn/matlabcentral/answers/393849-how-to-find-a-folder-in-the-pc

评论： Walter Roberson 2019-5-24

I do have got the following problem: I would like to use relative path so I have to find a folder in the PC's D: drive. After I found the location of the file I have to change the current direction to it's.

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Answer 1

Rik 2018-4-10

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https://ww2.mathworks.cn/matlabcentral/answers/393849-how-to-find-a-folder-in-the-pc#answer_314334

编辑：Rik 2018-4-11

在 MATLAB Online 中打开

You should be able to use cd, which also works with relative paths.

To find the file itself, you can use a recursive search with dir (assuming you have R2016b or newer).

filelist=dir(fullfile('D:','**','Soughtfile.ext'));

filelist will contain a struct with all files on the D drive with the name Soughtfile.ext.

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Thomas Dixon 2019-5-24

编辑：Thomas Dixon 2019-5-24

Hi I have a similar problem. I want to search the entire pc for a FOLDER. This folder is called DataDump\ and is somewhere on the pc (I don't know where). Once in it, there are (random_string)_Hdr.txt files which containt a string of where the data has been storred in the format:

[some number of random lines that dont contain a file path]

[some more random lines that dont contain a file path]

............ D:\[some_random_string].txt

[some more random lines that don't contain a file path]

I want to read this file and selct the entire file path to use to find where the data is. I then want to read the data and eliminate anything that isnt a list of decimal numbers with equal size columns. If this eliminates everything then return ('error no plottable data present'). I then want to be able to collect that data as an array/table to analyse.

In essence I want to send this to a pc where I don't know the file paths/structure. I want it to search that computer and find the _Hdr.txt files assuming this other pc only has one folder on it called ~\DataDump\ . I want it to examin this file and see where it has saved the data from a run which may/may not be in the DataDump\ folder and then I want it to return it me without any of the headings (without knowing if there are any headings or how long they are).

Walter Roberson 2019-5-24

Is it certain that the files referred to will always be on D:\ ? Or should the *_Hdr.txt files be search for any occurance of (whitespace)(alphabetic character)(literal colon)(literal backslash) ? Is it certain that the files will not contain UNC paths? And is it certain that the information to look for will not be in URI form such as file:///D/(some_random_string).txt or Google Drive addresses ?

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