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

2013 3 24
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更新时间：2021 8 20
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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.

回答（2 个）

Wayne King
Wayne King 2013-3-24

0 个投票

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
ibrahim 2013-3-24
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
Wayne King
Wayne King 2013-3-24

0 个投票

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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Wayne King
Wayne King 2013-3-24
I have no idea since you provide no details on how you "converted your image into svd pattern.." The outputs of MATLAB svd() are matrices, so I have no idea how you obtained this row vector.
ibrahim
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
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')

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ibrahim
ibrahim
2013-3-24

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