问未收到任何错误，但图像未在MATLAB中显示

EN

clc;
clear all;
close all;
img=imread('nor4.jpg');
m=impixel(img);
dlmwrite('D:\Retinopathy detection\Training.csv',m,'-append');
%figure(1),imshow(img);

clc;
clear all;
close all;
fileID = fopen('Training.csv');
C = textscan(fileID,'%f%f%f%f','Delimiter',',');
fclose(fileID);
x=[C{1} C{2} C{3}];
t=[C{4}];
s=input('Enter spread : ');
net = newpnn(x',t',s);
img=imread('trr.jpg');
[m,n,p]=size(img);
R=img(:,:,1);
G=img(:,:,2);
B=img(:,:,3);
RR=reshape(R,m*n,1);
GG=reshape(G,m*n,1);
BB=reshape(B,m*n,1);
Xtest=double([RR GG BB]);
Y = sim(net,Xtest');
Im=reshape(Y,m,n);
for i=1:1:m
    for j=1:1:n
        if Im(i,j)==1
            Newimg(i,j,:)=[230,166,122];
        else 
            Newimg(i,j,:)=img(i,j,:);
        end
    end 
end
figure(1),imshow(img);
figure(2),imshow(Newimg);`