access file from ext. hdd

Hi,

How to access a file from external hard disc ?

for example from, "/media/ext_hdd/"

Mahesh

Answer 1

[Jan]

This works directly, e.g.:

FID = fopen('/media/ext_hdd/YourFile.ext', 'r')

This works exactly as for files on the internal disk. So please explain, what you have tried and which problems occur.

[ektara]

my path is like....

fid=fopen('/media/WD\ Passport/r16_eraint_output/rmed16_etp1_newmask_noatlantic.nc')

and give me -1

and can't access.

[Walter Roberson]

Is the backslash part of the path? Or are you attempting to "escape" the space? If you are attempting to "escape" the space then leave out the backslash. "escaping" a space is needed by shells but is not used at the fopen() level.

Also it is a good idea to indicate the access type you want, 'r' or 'w' or 'a'

[Dora de Jong]

@Jan

I also have problems with uploading the files from my harddisk.

addpath('D:\AHN3\DSM05');
filelist = dir('DSM05');

But filelist gives a empty 0x1 structure.

When I use a folder intern it works, but not when I use a folder from the harddisk D. I use windows.

[Walter Roberson]

dir() does not use the search path. But you can use

projectdir = 'D:\AHN3\DSM05';
filelist = dir(projectdir);

[Jan]

It is a bad programming practize to call addpath to append a folder containing data files. Include only folders in the Matlab path, which contain your M-files.

To get a list of files:

filelist = dir('D:\AHN3\DSM05');

Answer 2

[Larry B]

I wanted to access data files on a external drive named "My Passport" in matlab using my MAC. The following is example of the path layout for the filename to make that happen:

fname ='/Volumes/My Passport/Tower_Collect/201808B.raw';

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