Indexing a cell, ignoring empty inputs?

조회 수: 2 (최근 30일)
Thomas Koelen
Thomas Koelen 2015년 3월 24일
댓글: Thomas Koelen 2015년 3월 24일
I have a cell that looks like this:
'GS_L' 'OECF' 'DYNAMIC_RANGE'
'GS_R' 'OECF' 'DYNAMIC_RANGE'
'GS_U' 'OECF' 'DYNAMIC_RANGE'
'GS_D' 'OECF' 'DYNAMIC_RANGE'
'HOR_B' 'UNIFORMITY' '0'
'HOR_W' 'UNIFORMITY' '0'
'HOR_G' 'UNIFORMITY' '0'
'VER_B' 'UNIFORMITY' '0'
'VER_W' 'UNIFORMITY' '0'
'VER_G' 'UNIFORMITY' '0'
I want to take the first row of the cell that have the word OECF in it.
So I apply this:
OECFINDEX = strfind(measureables,'OECF');
Which gives:
[] [1] []
[] [1] []
[] [1] []
[] [1] []
[] [] []
[] [] []
[] [] []
[] [] []
[] [] []
[] [] []
Now I do this:
OECFMES = measureables(find([OECFINDEX{:}] == 1)',1);
Which gives me:
'GS_L'
'GS_R'
'GS_U'
'GS_D'
Now, this seems to be working but when I try it for UNIFORMITY,
UNIFORMITYMES = measureables(find([UNIFORMITYINDEX{:}] == 1)',1);
It shows:
'GS_L'
'GS_R'
'GS_U'
'GS_D'
'HOR_B'
'HOR_W'
Instead of
'HOR_B'
'HOR_W'
'HOR_G'
'VER_B'
'VER_W'
'VER_G'
Does it ignore empty cell inputs? Or what is going on, and is there a way to fix this?
Kind regards,
Thomas Koelen

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Titus Edelhofer
Titus Edelhofer 2015년 3월 24일
편집: Titus Edelhofer 2015년 3월 24일
Hi Thomas,
yes it does. Do you really look for OECF in each string, or do you want to compare to OECF? For your example at least, the following works better:
UNIFORMITYINDEX = strcmp(measureables(:,2), 'UNIFORMITY')
measureables(UNIFORMITYINDEX, 1)
ans =
'HOR_B'
'HOR_W'
'HOR_G'
'VER_B'
'VER_W'
'VER_G'
Note, that I used strcmp instead of strfind. Don't know if that fit's only this example, though...
If strmatch is indeed the right function, use cellfun:
measureables(~cellfun(@isempty, UNIFORMITYINDEX(:,2)), 1)
Titus
  댓글 수: 3
Titus Edelhofer
Titus Edelhofer 2015년 3월 24일
Yes, of course. But I would start a new thread.
Titus
Thomas Koelen
Thomas Koelen 2015년 3월 24일
Ok I did that!
Thanks again.

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