index out of bound

intial_image=zeros(180,1);
for i=1:180
    intial_image(i)=i;
end

     y =zeros(30,1);
  y = datasample(intial_image,30);
  disp(y(2,1));
  size3=0;
  nBins=8;
  Nind=0;
  h1=0;
  count=0;
  for i=1:30
      if(numel(y)==30)
  jpgFileName = strcat('C:\Users\priya\Desktop\Fashion Photography\',num2str(y(i)), '.jpg');
   I= imread(jpgFileName);
     [row,col,m]=size(I);
      size3=size3+ row*col;
      count=count+1;
      end

giving error:

can not access y(2,1) because numel(y)=1.

[Stephen23]

Please show us all of the error message. This means all of the red text.

[Stephen23]

The code needs to be simplified. Replace this:

initial_image=zeros(180,1);
for i=1:180
    intial_image(i)=i;
end

with this:

initial_image = (1:180).';

There is no point in preallocating y like this:

y =zeros(30,1);

because it is completely reallocated on the very next line:

y = datasample(...)

Answer 1

[Walter Roberson]

Whatever

datasample(intial_image,30)

is, it is resulting in a scalar.

What is the result of

which -all datasample

? Is it from the Statistics Toolbox or does it resolve to one of your own routines?