(First File) Line 6 : The Function return value "jumlah_data" might be unset and the function "numel" might be unused . Line 23 . Line 40 . Line 44

clc; clear; close all;

% membaca file citra dalam folder
image_folder ='data latih';
filename = dir(fullfile(image_folder,   '*.jpg'));
% --- line 6 ---
function [jumlah_data] = numel(filenames)

% menginiliasisasi variabel data_latih
data_latih = zeros(jumlah_data,5);

% proses ekstraksi ciri orde satu
for k = 1:jumlah_data
    full_name = fullfile(image_folder, filenames(k).name);
    Img = imread(full_name);
    Img = rgb2gray(Img);
    H = imhist(Img)';
    H = H/sum(H);
    I = (0:255);
    CiriMEAN = I * H;
    CiriENT = -H * log2(H+eps)';
    CiriVAR = (I-CiriMean).^2*H';
    CiriSKEW = (I-CiriMean).^3*H'/ CiriVAR^1.5;
% --- Line 23 ----
    CiriKURT = (I-CiriMean).^4*H'/ CiriVAR^2-3;
    data_latih(k,:) = [CiriMEAN,CiriENT,CiriVAR,CiriSKEW,CiriSKURT];
end
% penentuan nilai target untuk masing-maisng jenis bunga
target_latih = zero(1,jumlah_data);
target_latih(1:6) = 1; %kamboja_biasa
target_latih(7:12) = 2; %kamboja_merah
target_latih(13:18) = 3; %kamboja_plumeriapudica
target_latih(19:24) = 4; %melati-gambir
target_latih(25:30) = 5; %melati_kuning

% pelatihan menggunakan algoritma multivism
output = multivsm(data_latih,target_latih,data_latih);

%menghitung nilai akurasi pelatihan
[n,~] = find(targer_latihan==output');
jumlah_benar = sum(n);
% --- Line 40 ---
akurasi = jumlah_benar/jumlah_data*100;
% menyimpan variabel data_latih dan target_latih
save data_latih data_latih
% --- Line 44 ---
save target_latih target latih
end

[darova]

Do you understand what it is?

[Fauzan Alghifari]

jumlah_data is amount of data entered

[darova]

I don't understand. You are using it inside function as a return value

[Fauzan Alghifari]

I deleted that, sir one more line sir line 35 error sir. help me sir

[darova]

Too much pressure, i can't handle

[Fauzan Alghifari]

this is done sir .

here sir

https://www.mathworks.com/matlabcentral/answers/519798-line-6-the-function-return-value-jumlah_data-might-be-unset-and-the-function-numel-might-be-un

Answer 1

[Walter Roberson]

clc; clear; close all;

% membaca file citra dalam folder
image_folder ='data latih';
filename = dir(fullfile(image_folder,   '*.jpg'));
% --- line 6 ---
[jumlah_data] = numel(filenames);

% menginiliasisasi variabel data_latih
data_latih = zeros(jumlah_data,5);

% proses ekstraksi ciri orde satu
for k = 1:jumlah_data
    full_name = fullfile(image_folder, filenames(k).name);
    Img = imread(full_name);
    Img = rgb2gray(Img);
    H = imhist(Img)';
    H = H/sum(H);
    I = (0:255);
    CiriMEAN = I * H;
    CiriENT = -H * log2(H+eps)';
    CiriVAR = (I-CiriMean).^2*H';
    CiriSKEW = (I-CiriMean).^3*H'/ CiriVAR^1.5;
% --- Line 23 ----
    CiriKURT = (I-CiriMean).^4*H'/ CiriVAR^2-3;
    data_latih(k,:) = [CiriMEAN,CiriENT,CiriVAR,CiriSKEW,CiriSKURT];
end
% penentuan nilai target untuk masing-maisng jenis bunga
target_latih = zero(1,jumlah_data);
target_latih(1:6) = 1; %kamboja_biasa
target_latih(7:12) = 2; %kamboja_merah
target_latih(13:18) = 3; %kamboja_plumeriapudica
target_latih(19:24) = 4; %melati-gambir
target_latih(25:30) = 5; %melati_kuning

% pelatihan menggunakan algoritma multivism
output = multivsm(data_latih,target_latih,data_latih);

%menghitung nilai akurasi pelatihan
[n,~] = find(targer_latihan==output');
jumlah_benar = sum(n);
% --- Line 40 ---
akurasi = jumlah_benar/jumlah_data*100;
% menyimpan variabel data_latih dan target_latih
save data_latih data_latih
% --- Line 44 ---
save target_latih target latih

[Fauzan Alghifari]

this is done sir .

here sir

https://www.mathworks.com/matlabcentral/answers/519798-line-6-the-function-return-value-jumlah_data-might-be-unset-and-the-function-numel-might-be-un

[Fauzan Alghifari]

and here

https://www.mathworks.com/matlabcentral/answers/519803-line-77-87-100-134-177-183-186-187-190-211-error-please-help-me