Undefined Function or variable Error

Jab
2015 9 15
2 个回答
更新时间：2015 9 15
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I tried a code with a filename jesuschrist.m. Always says Undefined function or variable 'jesuschrist'.
Any help is appreciated.
Thanks

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回答（2 个）

Adam
Adam 2015-9-15

0 个投票

Is the file on your Matlab path? In order for Matlab to see it and run it it must be on your path.

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Jab
Jab 2015-9-15
Could you please tell me how do I check whether it is in Matlab path or not? I saved the file on the D drive and runned it
Walter Roberson
Walter Roberson 2015-9-15
which -all jesuschrist
You may have to use pathtool to add the directory to your MATLAB path.
Jab
Jab 2015-9-15
编辑：Walter Roberson 2015-9-15
which -all jesuschrist
D:\ADNI1 Screening 1.5T(1075)\code\jesuschrist.m
This is the result i got
Jab
Jab 2015-9-15
I have added using pathtool function. but still getting the same error
Walter Roberson
Walter Roberson 2015-9-15
Is it a script or is it a function? If it is a function then what is the first line of the file?
Jab
Jab 2015-9-15
编辑：Walter Roberson 2015-9-15
it is a script which contains the following
clc;
clear all;
close all;
load fullFileName;
load M;
Walter Roberson
Walter Roberson 2015-9-15
You need to get rid of the "clear all"
Jab
Jab 2015-9-15
i tried that too.still facing the problem
Walter Roberson
Walter Roberson 2015-9-15
Experiment with
run('D:\ADNI1 Screening 1.5T(1075)\code\jesuschrist.m')
Jab
Jab 2015-9-15
totally frustrating!!! reinstalled matlab. not yet fixed

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Image Analyst
Image Analyst 2015-9-15

0 个投票

clear all doesn't matter - getting rid of that won't fix it as you found out.
Also, you did not get the error message "Undefined function or variable 'jesuschrist'."
You got the error message "Undefined function or variable 'fullFileName'." The reason is that once you started running jesuschrist, it hit that line and realized that fullFileName had not yet been defined by the time it needed to use it. Even after you fix that, you'll get the same problem with M because you did not define M either.
To fix, put this code right before your call to load():
% Have user browse for a file, from a specified "starting folder."
% For convenience in browsing, set a starting folder from which to browse.
startingFolder = 'C:\Program Files\MATLAB';
if ~exist(startingFolder, 'dir')
% If that folder doesn't exist, just start in the current folder.
startingFolder = pwd;
end
% Get the name of the file that the user wants to use.
defaultFileName = fullfile(startingFolder, '*.*');
[baseFileName, folder] = uigetfile(defaultFileName, 'Select a file');
if baseFileName == 0
% User clicked the Cancel button.
return;
end
fullFileName = fullfile(folder, baseFileName)

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Jab
Jab 2015-9-15
编辑：Jab 2015-9-15
I am getting the error message
with the filename as Undefined function or variable 'jesuschrist'.
I have the other two files in the folder where the jesuschrist file exist
Walter Roberson
Walter Roberson 2015-9-15
No, fullFileName appears as a string in the posted code, not as a variable.
load fullFileName
is
load('fullFileName')
Of course if there is no .mat named literally fullFileName.m then there would be a problem.

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Jab
Jab
2015-9-15

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Walter Roberson
2015-9-15

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