Undefined function 'regexp' for input arguments of type 'struct'

2017 3 4
2 个回答
回答已采纳
更新时间：2017 3 17
2 次查看（30 天）

0 个投票

I want to extract keywords(which the word start with import.XXXX) from multiple files under annotation folder. I run my code like this, Y I get the error? Anybody can help?
r = dir(fullfile('C:\Users\ASUS\Desktop\AngryBirdTest\android\support\annotation', '*.java'));
for i=1:length(r)
p = regexpi(FileList,'import.\w*.\w*.\w*','match');
disp(p(i));
end

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 采纳的回答

Walter Roberson
Walter Roberson 2017-3-5

1 个投票

My guess:
projectdir = 'C:\Users\ASUS\Desktop\AngryBirdTest\android\support\annotation';
r = dir(fullfile(projectdir, '*.java'));
filenames = {r.name};
FileList = fullfile(projectdir, filenames);
for K = 1:length(FileList)
thisfile = FileList{K};
fprintf('\nExamining file "%s"\n', thisfile); %if desired
filecontent = fileread(thisfile);
p = regexpi(filecontent, 'import.\w*.\w*.\w*', 'match');
disp(p);
end

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ai ping Ng
ai ping Ng 2017-3-11
r = dir(fullfile('C:\Users\ASUS\Desktop\AngryBirdTest\API_ClassFileTest/', '*.java'));
for i=1:length(r)
p = regexp(fileread(strcat('C:\Users\ASUS\Desktop\AngryBirdTest\API_ClassFileTest/',r(i).name)), 'import android.\w*.\w*.\w*','match');
disp(p)
end
This is the final code I have figured out that day, thanks for your answer.I will use yr answer to learn it more.
ai ping Ng
ai ping Ng 2017-3-11
编辑：ai ping Ng 2017-3-11
But then why my workspace showing that my p have 0X0 cell only? How to show it in my workspace?
ai ping Ng
ai ping Ng 2017-3-14
I finally found out is because I didn't save it in matrix. I can output my p now after I save it in matrix form. Can I know how to output as a big feature vector like 000010000001.....01 like that? Mean if that feature exists, it shows as 1, if not it show it as 0. I use this "features3 = ~cellfun(@isempty,regexp(no_duplicates,r2));" but then it doesn't work. Below are my sample file and sample code. Hope you can help me, truly appreciated.
r = dir(fullfile('C:\Users\ASUS\Desktop\AngryBirdTest\API_ClassFileTest/', '*.java'));
r2 = regexp(fileread('Dataset3_API.txt'), '\r?\n', 'split');
saveValueP = [];
for i=1:length(r)
p = regexp(fileread(strcat('C:\Users\ASUS\Desktop\AngryBirdTest\API_ClassFileTest/',r(i).name)), 'import android.\w*.\w*.\w*','match');
saveValueP = [saveValueP p];
no_duplicates = unique(saveValueP);
features3 = ~cellfun(@isempty,regexp(no_duplicates,r2));
end
disp(features3)
Walter Roberson
Walter Roberson 2017-3-14
As I wrote before:
If you have a cell array of strings to test, then you need to define whether you want one feature vector per cell member, or if you want the feature vector to reflect whether the substrings occur in any of the cell members.
ai ping Ng
ai ping Ng 2017-3-17
Thanks. Get it. I change into a string, it works.
r = dir(fullfile('C:\Users\ASUS\Desktop\FYP\M1\ClassFileTest/', '*.java'));
r2 = regexp(fileread('Dataset3_API.txt'), '\r?\n', 'split');
saveValueP = [];
for i=1:length(r)
p = regexp(fileread(strcat('C:\Users\ASUS\Desktop\FYP\M1\ClassFileTest/',r(i).name)), 'import android.\w*.\w*.\w*','match');
saveValueP = [saveValueP p];
no_duplicates = unique(saveValueP); %remove duplicated features
end
str = strjoin(no_duplicates);
features3 = ~cellfun(@isempty,regexp(str,r2,'match'));
disp(no_duplicates)
I still meet a question after that. Let say now I am examining the Class file which under M1 folder >> 'C:\Users\ASUS\Desktop\FYP\M1\ClassFileTest/' How if I have 'M1 folder' 'M2 folder' and 'M3 folder' ... 'Mx folder' to undergo? Is that a way to make it automatically examine and then can produce all of my folders' feature vectors?
Walter Roberson
Walter Roberson 2017-3-17
https://www.mathworks.com/matlabcentral/answers/57446-faq-how-can-i-process-a-sequence-of-files

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更多回答（1 个）

Image Analyst
Image Analyst 2017-3-5

0 个投票

You didn't show us how you got FileList. Evidently it thinks it's a structure.

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