How to delete empty files/spreadsheets in a directory ?

조회 수: 7 (최근 30일)
Ivan Mich
Ivan Mich 2021년 3월 4일
댓글: Walter Roberson 2021년 3월 7일
Hello,
I have a directory with milions of .xlsx files. The point is that I want to remove empty files. Is there a way to do it using a command in matlab? Instead of the fact that these files are empty, they have 10kb.
Could you please help me?
  댓글 수: 4
Walter Roberson
Walter Roberson 2021년 3월 4일
To clarify:
Files that have only one line of data should be deleted, but files that have more than one line of data should not be deleted?
Ivan Mich
Ivan Mich 2021년 3월 4일
편집: Ivan Mich 2021년 3월 4일
I should delete files that have no line of data (see the format of the EMPTY.xlsx' file I uploaded) and I should keep files that have one or more than one line of data.
Did you understand?

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채택된 답변

Ivan Mich
Ivan Mich 2021년 3월 5일
편집: Ivan Mich 2021년 3월 7일
After your suggestions I wrote finally this script that works
clc
clear
% C = readcell('EMPTY.xlsx');
% isempty(C)
emptyfiles=dir('*xlsx')
for k=1:numel(emptyfiles)
emptynew=emptyfiles(k).name
[STATUS, SHEETS] = xlsfinfo(emptynew);
% if length(SHEETS) > 1; next; end %assume multiple sheet files are special
C = readcell(emptynew, 'sheet', SHEETS{1});
if isempty(C);
delete(emptynew);
end
end
  댓글 수: 5
Ivan Mich
Ivan Mich 2021년 3월 7일
Ok, one last question. Can I delete files that have only 1 row and one column empty (I mean 1x1 double) and keep all the other files?
Walter Roberson
Walter Roberson 2021년 3월 7일
if size(C,1) == 1 && size(C,2) == 1
delete(emptynew);
end

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추가 답변 (1개)

Fangjun Jiang
Fangjun Jiang 2021년 3월 4일
  1. run [STATUS,SHEETS] = xlsfinfo(FILENAME). Most likely, it will tell you there is only one sheet
  2. run [NUM,TXT,RAW]=xlsread(FILENAME). Most likely, isempty(NUM) and isempty(TXT) are both true
  3. delete(FILENAME)
  댓글 수: 2
Walter Roberson
Walter Roberson 2021년 3월 4일
Alternative to the second step:
C = readcell(FILENAME);
isempty(C)
For example,
[STATUS, SHEETS] = xlsfinfo(FILENAME);
if length(SHEETS) > 1; next; end %assume multiple sheet files are special
C = readcell(FILENAME, 'sheet', SHEETS{1});
if isempty(C); delete(FILENAME); end
Ivan Mich
Ivan Mich 2021년 3월 5일
I run this code after your suggestions:
[STATUS, SHEETS] = xlsfinfo('*.xlsx');
if length(SHEETS) > 1; next; end %assume multiple sheet files are special
C = readcell('*.xlsx', 'sheet', SHEETS{1});
if isempty(C); delete('*.xlsx'); end
BUT NO USE!
Do you know why?

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