Remove .mat variable image data

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Md Shamim Hossain
Md Shamim Hossain 2017-6-21
回答： Walter Roberson 2017-6-21
whos('-file','data_batch_1.mat')
Name Size Bytes Class Attributes
batch_label 1x21 42 char
data 10000x3072 30720000 uint8
labels 10000x1 10000 uint8
When I analyze my .mat file It has three variable. In the data variable. I want to remove the image inside the data variable and keep my won 10000 image data in same Size, same Bytes and same Class. Anyone can help me providing Matlab code.
  2 个评论
KSSV
KSSV 2017-6-21
Not clear with question.....in .mat file there are three variables, you need to delete few variables out of it?
Md Shamim Hossain
Md Shamim Hossain 2017-6-21
In Data variable contains 10,000 images. I want to remove all images inside Data variable and keep my won 10,000 images in same size 10000x3072 and same class uint8.

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回答（1 个）

Walter Roberson
Walter Roberson 2017-6-21
filename = 'data_batch_1.mat';
filestruct = load(filename);
filestruct.data(:) = 0; %removes all useful content, preserving size and data class
save(filename, 'filestruct', '-struct'); %write the variables back to the file

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