Undefined variable "testsets" or class "testsets"
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I want to change the dataset from 'cuhk03.mat' to 'cuhk03_detected_lomo.mat',when i run the same program,there has an erro shows
% >> prepare_imdb
Undefined variable "testsets" or class "testsets"
wrong in prepare_imdb (line 14)
test = testsets{testsets_num,1};
But there has no error when i use the 'cuhk03.mat'(the‘cuhk03_detected_lomo.mat' is a dataset which has been processed with LOMO characteristics).The complete code is as follows：
% clear;
%you can download this file. It contains data.
load('..\cuhk03-prepare-eval/cuhk03_detected_lomo.mat');
imdb.meta.sets = ['train','test'];
count = 0;
label = 0;
%choose a split
testsets_num = 6; %cuhk03 has 20 different splits, and this value can be 1 ~ 20.
p = sprintf('./split%d_256_1/',testsets_num);
if(~exist(p,'dir'))
mkdir(p);
end
test = testsets{testsets_num,1};
cc = [];
for k=1:numel(detected) %camera
im = detected{k,1};
for i = 1:size(im,1) %identity
A = find(test(:,1) == k);
B = find(test(:,2) == i);
C = intersect(A,B);
if(~isempty(C))
continue;
end
label = label+1;
temp = 0;
for j=1:10 %image
file = im{i,j};
url = sprintf('F:/2016_person_re-ID-master/2016_person_re-ID-master/cuhk03-prepare-eval/split%d_256/%d_%d_%d_1.jpg',testsets_num,k,i,j);
if(~isempty(file))
disp(url);
imwrite(imresize(file,[256,256]),url);
temp = temp + 1;
count = count + 1;
%disp(count);
imdb.images.data(count) = cellstr(url);
imdb.images.label(count) = label;
end
end
cc = [cc;temp];
end
end
imdb.images.set = ones(1,count);
imdb.images.set(:,randi(count,[round(0.1*count),1])) = 2;
list = find(imdb.images.set==2);
for i=1:numel(list)
if cc(imdb.images.label(list(i)))<9
imdb.images.set(list(i))=1;
end
end
save(sprintf('cuhk_data_256_split%d_1.mat',testsets_num),'imdb','-v7.3');
回答（2 个）
Walter Roberson
2018-10-28
1 个投票
You are doing load() with no output arguments. That causes variables to be created in the current workspace. Your code then relies upon variables with those particular names existing. But what happens if what you load() has different variable names, or structures the information differently, or perhaps does not contain the information at all?
5 个评论
mengqiu ren
2018-10-28
Walter Roberson
2018-10-28
Show us
whos -file cuhk03.mat
whos -file cuhk03_detected_lomo.mat
I suspect that the processed file does not contain the information you need.
mengqiu ren
2018-10-28
Walter Roberson
2018-10-28
Sorry, I do not offer assistance for biometrics.
mengqiu ren
2018-10-29
madhan ravi
2018-10-28
0 个投票
You didn’t define testsets
7 个评论
mengqiu ren
2018-10-29
Walter Roberson
2018-10-29
Your datasets do not contain the expected variable names.
madhan ravi
2018-10-29
I’ll illustrate with an example ,
I have a .mat file named as Madhan.mat.
So I load the file in script say
load Madhan.mat
It contains variables a,b and c.
But instead I say
d.^2 in the next line.
What does MATLAB show me now in command window?
It says Undefined function or variable d.
Likewise it’s the same in your case so the so called testsets is not there in file .
But if you insist using testsets in the script you can rename the variable name as such .
datas = Madhan.mat
testsets = datas.a
Now what happens ? The variable name a is changed to testsets likewise you should do it for your case.
mengqiu ren
2018-10-29
madhan ravi
2018-10-29
Anytime
mengqiu ren
2018-10-30
madhan ravi
2018-10-30
编辑：madhan ravi
2018-10-30
yeah right atleast you found the answer for whats the causing the problem , your question here was "Undefined variable "testsets" or class "testsets""
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