Unrecognized function or variable 'filenames'. Error in pengujian_sistem (line 4) jumlah_data = numel(filenames);

% membaca file citra dalam folder
image_folder ='data uji';
filename = dir(fullfile(image_folder,   '*.jpg'));
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;
    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);
[n,~] = find(targer_latih==output');
jumlah_benar(1) = sum(n);
akurasi(1) = jumlah_benar(1)/jumlah_data*100;
% load data_latih dan target_latih hasil pelatihan
dl = load('data_latih');
tl = load('target_latih');
% pengujian menggunakan algoritma multivsm
output = multivsm(dl.data_latih,tl.target_latuh,data_uji);
%menghitung nilai akurasi pelatihan
[n,~] = find(targer_latihan==output');
jumlah_benar(2) = sum(n);
akurasi(2) = jumlah_benar(2)/jumlah_data*100;

[dpb]

filename = dir(fullfile(image_folder,   '*.jpg'));
jumlah_data = numel(filenames);

You returned the variable filename (singular) but then used the plural form next line...change one or the other to match.

Since dir() can return multiple and is apparently expected to do so, the plural form would seem the logical choice.

filenames = dir(fullfile(image_folder,   '*.jpg'));

[Image Analyst]

Just what I was going to say. Good answer, so can you put it down in the Answer section below?

[dpb]

As often wont to do, started with just the first comment...that looked bare so ended up as something else. :)

Answer 1

[dpb]

filename = dir(fullfile(image_folder,   '*.jpg'));
jumlah_data = numel(filenames);

You returned the variable filename (singular) but then used the plural form next line...change one or the other to match.

Since dir() can return multiple and is apparently expected to do so, the plural form would seem the logical choice.

filenames = dir(fullfile(image_folder,   '*.jpg'));

[Fauzan Alghifari]

'zero' requires one of the following:

Control System Toolbox

System Identification Toolbox

Error in pengujian_sistem (line 23)

target_latih = zero(1,jumlah_data);

[dpb]

Another typo/spelling error -- the MATLAB function for preallocation is "zeros", not "zero".

Get in the habit of using the tab completion feature that will prompt you.

[Fauzan Alghifari]

thanks sir

new error

Unrecognized function or variable 'multivsm'.

Error in pengujian_sistem (line 30)

output = multivsm(data_latih,target_latih,data_latih);

[dpb]

Well, same song, third verse...

You're asking for a function that isn't there -- either the name is again a typo/misspelling or it is a function from somewhere else -- a search on the TMW documentation site didn't find it as being in any current toolbox or the base MATLAB.

Closest it came up with beginning with multi was <help/images/ref/multissim> Whether that's anything close or not, we have no idea or any way to know...

[Fauzan Alghifari]

i dont undrestand you said sir.

please help me . my file is error

[dpb]

Not much can do...where did you get the name "multivsm" you used?

If you got this code from somewhere else, there must be the other function source code to go with it.

You need to go to that source and ask; that is not the name of a MATLAB function in either the base product or any toolbox sold by The Mathworks -- it came from somewhere else and we don't know where that might be.

Where did this code come from? Clearly you must not have written it from scratch...

[Fauzan Alghifari]

code "multisvm" is not code in matlab ? are you sure ?

[dpb]

Go to "Documenation Home" and type it into the search box and see what you find...<Documentation Home>

[Stephen23]

"code "multisvm" is not code in matlab ? are you sure ?"

Yes.

Lets search the entire TMW website for the text "multisvm", and see what we find. It is so easy to do, just goto www.mathworks.com and enter your search term in the box at the top that looks like this:

These are currently 46 results, all of which are third-party code submitted on FEX or threads on Answers (several of which ask why multisvm is undefined). None of the results are for any TMW toolbox function. The search feature can also help us by excluding FEX and Answers results, by selecting the advanced search: and then exlcuding FEX and Answers by deselecting the relevant checkboxes:

Which gives these results:

So there we are: once we exclude FEX and Answers from the search, the term "multisvm" cannot be found anywhere on this website. Of course non-existence is impossible to prove, but this is a rather strong hint that multisvm is not a TMW function. Perhaps you prefer your hints stronger than that?

[Fauzan Alghifari]

CLOSE . THX ALL