Undefined variable "testsets" or class "testsets"

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mengqiu ren
mengqiu ren 2018-10-28
编辑： madhan ravi 2018-10-30
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');

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回答（2 个）

Walter Roberson
Walter Roberson 2018-10-28
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?
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Walter Roberson
Walter Roberson 2018-10-28
Sorry, I do not offer assistance for biometrics.

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madhan ravi
madhan ravi 2018-10-28
You didn’t define testsets
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mengqiu ren
mengqiu ren 2018-10-30
It do not have the information which i need in the new .mat file . And the information in the two file have different format，so it can not result by the method of mandatory definition.I decide to change a method.
madhan ravi
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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