how to identify empty , non-empty char matrix condition?

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MP
MP 2022-7-18
回答： MP 2022-7-18
I have a matrix "A" with size 4x8 char and having values:
'01:04:00'
'01:03:00'
' '
'01:01:00'
I want to identify the index of empty char. I.e. 3rd one.
I tried,
% first one
A == ""
% second one
A == ''
% third one
isempty(A)
% forth one
isspace(A)
% fifth one
A == ' '
% sixth one
A == " "
% everything shows zero output.
Can anyone please help?
Any help will be greatly appriciated.

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采纳的回答

Stephen23
Stephen23 2022-7-18
编辑：Stephen23 2022-7-18
Ran in:
M = [...
'01:04:00'
'01:03:00'
' '
'01:01:00'];
strcmp('',cellstr(M)) % CELLSTR removes trailing whitespace characters.
ans = 4×1 logical array
0 0 1 0
cellfun(@isempty,cellstr(M)) % CELLSTR removes trailing whitespace characters.
ans = 4×1 logical array
0 0 1 0
all(M==32,2) % match space character only.
ans = 4×1 logical array
0 0 1 0
all(M==' ',2) % match space character only.
ans = 4×1 logical array
0 0 1 0
all(isstrprop(M,'wspace'),2) % match any whitespace character.
ans = 4×1 logical array
0 0 1 0

更多回答（1 个）

MP
MP 2022-7-18
@Stephen23: Could you please also look into my another question?
https://in.mathworks.com/matlabcentral/answers/1762535-how-to-find-the-nearest-matrix-between-two-matrices?s_tid=srchtitle

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