Ones function printing out
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Can anyone tell me why my ones function is causeing my code to print even though it has a semi colon? I commented everything else out to narrow it down to the ones function. I already reinstalled matlab but nothing seems to be working
getX1();
function X1 = getX1()
clc;
close;
clear;
load('mnist.mat', 'images'); % Load 'images' variable from 'mnist.mat'
num_images = size(images, 1);
image_size = 26 * 26; % Adjusted image size
X1 = ones(num_images, image_size + 1); % Initialize X matrix with bias column
for i = 1:num_images
%Crop 1-pixel border
image_cropped = images(i, 2:end-1, 2:end-1);
%Flatten image, normalize, and append 1
image_flat = double(reshape(image_cropped, 1, [])) / 255;
image_with_bias = [image_flat, 1];
% Update X matrix
X1(i, :) = image_with_bias;
end
% size of X matrix
fprintf('Size of X matrix: %d rows x %d columns\n', size(X1, 1), size(X1, 2));
end
11 Comments
VBBV
on 25 Feb 2024
It seems you are running the script file getX1.m from a wierd location. Change its location to a different folder and run again
The path from the screenshot shows something like this
C:\users\zach1\OneDrive\...\Project1\mnist.mat\getX1.m
mnist.mat >> change this to a different name without a dot and check whether you still get that issue
Walter Roberson
on 25 Feb 2024
That will not make any difference. mnist.mat is a valid directory name.
Answers (2)
Walter Roberson
on 24 Feb 2024
The ones is the output of your function. You are running the function by pressing the green Run button, which executes the function which returns X1 which then gets printed out automatically.
2 Comments
Walter Roberson
on 24 Feb 2024
At the end of the code, insert
if nargout == 0
clear X1;
end
Star Strider
on 24 Feb 2024
The fprintf call will execute and print even if there is a semicolon at the end of that call.
X1 = rand(3,5);
fprintf('Size of X matrix: %d rows x %d columns\n', size(X1, 1), size(X1, 2));
Are you seeing that or something else?
.
6 Comments
Star Strider
on 24 Feb 2024
It’s coming from somewhere else in your code. I doubt if anything in the recycling bin is in any way active.
I don’t know how long your code is, however in the past when I needed to isolate something like that, I inserted:
fprintf('Stopped on line %d\n', line_nr)
return
and then moved those lines to various points in my code and then looked to see if the problem recurred. (I inserted the line number manually.) That helped me find the problem.
There are a collection of debugging tools available, however they might not be helpful in tracking down a line that prints a matrix, and that’s all you want to do at the moment.
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