MATLAB: I am getting an error “Matrix index is out of range for deletion”

MATLAB

I am getting an error

Matrix index is out of range for deletion.

Error in dir_bo (line 6)
imname(1:2) = [];
Error in get_im_label (line 6)
subdir = dir_bo(imdir);
Error in curet (line 18)
imageDatasetLabel = get_im_label(imdir);

my code is

addpath('./helpfun');
imdir = './CURET/';
savedir = ['./_features/CURET']; % save features 
mkdir_bo(savedir);
datadir = 'results'; % save classification accuracy
mkdir_bo(datadir);     
%% feature extraction
sigmaSet = [1 2 4]; 
F = makeGDfilters(sigmaSet);
snr = 0; % here "0" only denotes "No noise"
K = 2;
C = 1;
Ls = 3;
Lr = 5;  
imageDatasetLabel = get_im_label(imdir);
imageDatasetFeatPath = get_feature_path(savedir);

Help me to solve this error. Thanks in advance

Best Answer

Check the dimensions of imname.....it doesnt have the elements which you expect to delete. So the error.

A = rand(10,1) ;
A(1) = []   % no error 
A(11) = []   % error, because A has no 11th element

Related Solutions

MATLAB: Getting an error that attempt to run script as a function? what should be done to rectify

You have saved get_im_label as a script instead of a function look into the error message as it clearly states the error.

Usage:

get_im_label(imdir)

differences between a script and a function

MATLAB: Unable to perform assignment because the indices on the left side are not compatible with the size of the right side.

Use the debugger to find the cause of the problem. Type e.g. this in the command window:

dbstop if error

Run the code again. When Matlab stops at the error, check the currently used variables:

size(img)
size(images)

Maybe the rgb2gray is important?

Some hints:

fullfile(a,b) is smarter than [a, '/', b], because it considers the fileseparators of the platform.
The names of the variables look confusing: "filenames" is not a list of file names, "a" is meaningless,
labels = reshape(labels, [length(labels), 1]) can be written as labels = labels(:).
The condition if subDir == '.' | strcmp(subDir, '..') == 1 can be simplified. Remember that == is the elementwise operation and subDir is a char vector. If subDir is '..', the comparison replied [true, true]. Because if requires a scalar condition, Matlab inserts an all implicitly. Then this is suffcient actually: if subDir == '.', because it catchs '..' also. Writing this explicitly is nicer to read: if all(subDir == '.'). This would trigger also for '...', but this is not an allowed file name under Windows, but maybe under Linux (?). Therefore I prefer the explicit: if strcmp(subDir, '.') || strcmp(subDir, '..')

Prefer to work with cell strings (or strings) instead of CHAR matrices. Replace:

imageFiles = '';
...
      files = dir(strcat(dirPath, '/', subDir));
      fileFlags = ~[files.isdir];
      files = files(fileFlags);
      for j = 1: length(files)
          filename = strcat(subDir, '/', files(j).name);
          imageFiles = strvcat(imageFiles, filename);
      end

      imageFiles = {};
      ...
      files      = dir(fullfile(dirPath, subDir));
      fileNames  = {files(~[files.isdir]).name};
      imageFiles = cat(2, imageFiles, fileNames);
      ...
      % Instead of imageFiles(j, :) use imageFiles{j} afterwards

Best Answer

Related Solutions

MATLAB: Getting an error that attempt to run script as a function? what should be done to rectify

MATLAB: Unable to perform assignment because the indices on the left side are not compatible with the size of the right side.

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