I'd like to skip the file that's not there and bring it up!

Hello, I am a student who is learning mat rap. I left a question because I didn't know something while doing the assignment.

The codes I have to sing are NO_001, NO_002,...Code up to NO_100.

There is a missing number among the 100 numbers.

I want to keep the for statement except for this missing file, but I don't know what function to put in it.

clc; clear;

for k=1:100

load(['01__input/NO_',num2str(k,'%03d'),'.mat'],'data')

if isempty( )

continue

end

end

[Stephen23]

A simple alternative approach is to use DIR, then you can simply avoid the problem:

S = dir('01__input/NO_*.mat');: 
for k = 1:numel(S)
    F = fullfile(S(k).folder,S(k).name);
    D = load(F,'data');
    .. do whatever with D.data, or store for later processing:
    S(k).data = D.data;
end

Answer 1

[John D'Errico]

mat rap? Is that some godawful new song I've never heard before? ;-) That just seems, well, raprehensible to me.

You don't want to use isempty there. Instead, use the exist function. Test to see if the file exists, BEFORE you try to load the file. If it does not exist, then do you want to try load it in the first place?

[KRLKL]

Oh my! I didn't know I wrote "mat rap" wrong! You pointed it out tactfully! Thanks to you, I completed the assignment using 'exist'. Thank you so much! Always be happy!

[John D'Errico]

Why is it every older generation never seems to undertand the music of today, regardless of what generation we are in? Let me ask MATLAB...

why

It should be obvious.

Gosh, I'm not sure that explains anything. Darn computers.

Anyway, I had to laugh a little. But MATLAB does not understand rap either. For example,

help rapmat

--- rapmat not found. Showing help for repmat instead. ---

 REPMAT Replicate and tile an array.
    B = REPMAT(A,M,N) or B = REPMAT(A,[M,N]) creates a large matrix B 
    consisting of an M-by-N tiling of copies of A. If A is a matrix, 
    the size of B is [size(A,1)*M, size(A,2)*N].
 
    B = REPMAT(A,N) creates an N-by-N tiling.  
    
    B = REPMAT(A,P1,P2,...,Pn) or B = REPMAT(A,[P1,P2,...,Pn]) tiles the array 
    A to produce an n-dimensional array B composed of copies of A. The size 
    of B is [size(A,1)*P1, size(A,2)*P2, ..., size(A,n)*Pn].
    If A is m-dimensional with m > n, an m-dimensional array B is returned.
    In this case, the size of B is [size(A,1)*P1, size(A,2)*P2, ..., 
    size(A,n)*Pn, size(A, n+1), ..., size(A, m)].
 
    REPMAT(A,M,N) when A is a scalar is commonly used to produce an M-by-N
    matrix filled with A's value and having A's CLASS. For certain values,
    you may achieve the same results using other functions. Namely,
       REPMAT(NAN,M,N)           is the same as   NAN(M,N)
       REPMAT(SINGLE(INF),M,N)   is the same as   INF(M,N,'single')
       REPMAT(INT8(0),M,N)       is the same as   ZEROS(M,N,'int8')
       REPMAT(UINT32(1),M,N)     is the same as   ONES(M,N,'uint32')
       REPMAT(EPS,M,N)           is the same as   EPS(ONES(M,N))
 
    Example:
        repmat(magic(2), 2, 3)
        repmat(uint8(5), 2, 3)
 
    Class support for input A:
       float: double, single
       integer: uint8, int8, uint16, int16, uint32, int32, uint64, int64
       char, logical
 
    See also BSXFUN, MESHGRID, ONES, ZEROS, NAN, INF.

    Documentation for repmat
       doc repmat

    Other uses of repmat

       codistributed/repmat    gpuArray/repmat            symfun/repmat
       embedded.fi/repmat      InputOutputModel/repmat    tall/repmat

It does try. But it gets confused. :)

Anyway, have a nice day. I'm happy to have made you smile.