what's the matter when i run a M.file?

These below are part of the contents of the M.file i want to run.

clc;
clear all;
clc;

addpath(genpath('Sample_test'));
addpath(genpath('LFToolbox0.4'));

LFMatlabPathSetup;

%% Step1: Decompress data.C.0/1/2/3---> to get white image data
fprintf('===============Step1: Unpack Lytro Files===============\n\n ');
LFUtilUnpackLytroArchive('Sample_test')  

These below are the results in the command.

===============Step1: Unpack Lytro Files===============

Searching for files [ data.C.0 ] in Sample_test

??? Error using ==> textscan

First input must be of type double.

Error in ==> LFToolbox0.4\LFFindFilesRecursive.m at 83

FolderList = textscan(FolderList, '%s', 'Delimiter', pathsep);

Error in ==> LFToolbox0.4\LFUtilUnpackLytroArchive.m at 44

[AllVolumes, BasePath] = LFFindFilesRecursive(InputPath, FirstVolumeFname);

Error in ==> Demo at 23

LFUtilUnpackLytroArchive('Sample_test')

Answer 1

[TADA]

textscan accepts a file id not a file path. Use fopen first

[Huadong Hu]

Could you please tell me how to correct it?

FolderList = textscan(FolderList, '%s', 'Delimiter', pathsep);

[TADA]

What exactly are you trying to achieve by that?

And what does Folder list contain? Is folder list what's generated by genpath?

[Walter Roberson]

In sufficiently new MATLAB textscan can accept a character vector as the first parameter and it uses the content of the character vector as input as if it had been read from a file. The people who wrote the code used that ability in order to split a file name at the directory delimiters or perhaps at a colon. The poster is using a version of MATLAB too old to support the feature.

[TADA]

Oh.... I can't say much about older versions of Matlab....

@Huadong Hu, you can try using

FileList = regexp(FileList, pathsep, 'split');

Or

FileList = strsplit(FileList, pathsep);

Hopefully that feature did exist back in 2004

[Walter Roberson]

strsplit() is r2013a .

regexp() should be there. However after you use regexp with 'split', it is a good idea to use

dirlist = regexp(FolderList, pathsep, 'split');
dirlist(cellfun(@isempty, dirlist)) = [];
FolderList = dirlist;

If Folderlist had happened to begin or end with pathsep or if there had been multiple pathsep in a row, then regexp split would have left an empty cell; the indexing and cellfun is there to delete those empty cells.

Answer 2

[Walter Roberson]

You are using MATLAB R14 from 2004 to attempt to run code that was written for R2014a. The code uses features that did not exist in your release.

[Huadong Hu]

so install R2014a version?