??? Undefined function or method 'irisBasisSVD' for input arguments of type 'double'.

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ibrahim 2013-3-24

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关闭： MATLAB Answer Bot 2021-8-20

can someone please help me resolve this issue? I initially converted my image into svd pattern and used the save function to save it in the '-mat' format. for training, the program used the load function to call the save format, and the program was supposed to get 3 dimensions. The program got stocked at this stage displaying an error message of undefined function or method. here is the part of the code with the error:

load irisBasisSVD;

%get only first 3 dimensions'

nclasses=50;

TS=[irisBasisSVD(1:nclasses*7,1:3) irisBasisSVD(1:nclasses*7,41)]; % this is the part with the error.

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Answer 1

Wayne King 2013-3-24

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Are you sure that when you load the irisBasisSVD.mat file, that the variable(s) inside the .mat file is actually called irisBasisSVD?

If you enter

whos('-file','irisBasisSVD.mat')

what is returned?

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ibrahim 2013-3-24

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hi Wayne thanks for your reply, i am sorry for responding late. here is the answer to what you asked:

>> whos('-file','irisBasisSVD.mat') Name Size Bytes Class Attributes

T 1x640 5120 double

Answer 2

Wayne King 2013-3-24

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Your answer to my question means that the only variable in that .mat file is a single row vector, T.

Accordingly, you cannot address irisBasisSVD( ) in the MATLAB workspace like it is a matrix, because MATLAB will think you are trying to call a function irisBasisSVD().

You should substitute the actual variable name, which is T. However, you have another issue, T is a row vector, NOT a matrix as you seem to think by your addressing of both row and column elements of irisBasisSVD

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ibrahim 2013-3-24

i am sorry, i was offline, can u give me your email so that i can send you the code i used for the conversion? i will be so so glad if you can go through it for me. this is my project and i have to submit this Saturday.thanks

ibrahim 2013-3-24

hello wayne, here is the code i used to convert the image into svd:

clc; clear;

%set base directory of irisBasis directory irisDir = 'C:\Users\livingstone\Desktop\iris';

clc; T=[];

irisFiles = dir(irisDir);

for i=1:size(irisFiles,1)

if not(strcmp(irisFiles(i).name,'.')|strcmp(irisFiles(i).name,'..'))

irisFileName = [irisDir, '\', irisFiles(i).name];

F=imread(irisFileName); A=im2double(F);

%perform singular value decomposition

s=mp_mysvd(A);

P=[s', str2num(irisFiles(i).name(1:3))]; T=[T,P]; irisFileName [size(P) size(T)] end end

save ('irisBasisSVD', 'T', '-ascii')