How to determine non-zero values from a string array?

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Mohammed
Mohammed 2016-11-10
评论： Mohammed 2016-11-10
I have following string array and I am trying to find out which string has value that are not equal to zero. I used str2num but apparently I am missing something here to get it right, any tips?
a =
' 0.5%'
' 0.0%'
' 0.0%'
' 0.0%'
'16.0%'
' 0.5%'
' 0.0%'
' 2.8%'
' 0.0%'
'11.6%'
' 0.5%'
' 8.3%'
' 0.0%'
'36.7%'
'23.2%'
Result should look like above except 0.0% taken out!

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采纳的回答

KSSV
KSSV 2016-11-10
clc; clear all ;
a = { ' 0.5%'
' 0.0%'
' 0.0%'
' 0.0%'
'16.0%'
' 0.5%'
' 0.0%'
' 2.8%'
' 0.0%'
'11.6%'
' 0.5%'
' 8.3%'
' 0.0%'
'36.7%'
'23.2%'} ;
% get strings which are 0
idx = strfind(a, '0.0%');
idx0 = find(not(cellfun('isempty', idx)));
% get indices of non-zeros
iwant = setdiff(1:length(a),idx0) ;
a(iwant)

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