How to search for an exact string not just contains

조회 수: 246 (최근 30일)
Sara Ismail-Sutton
Sara Ismail-Sutton 2020년 9월 12일
댓글: Paul Safier 2021년 12월 21일
Hiyah
I'm searching a cell array for an exact string, e.g the data I am searching contains both 'Las Vegas, NV' and 'North Las Vegas, NV' and I want specifically the coordinats of 'Las Vegas, NV'
the code I've used so far is:
Y = ~cellfun('isempty',strfind(cellstr(num),'Las Vegas, NV'));
(then [row col] = find(Y==1) )
how do I modify?
Thanks alot !

답변 (2개)

the cyclist
the cyclist 2020년 9월 12일
편집: the cyclist 2020년 9월 12일
Use strcmp instead, which checks for identical matches.
loc = {'Las Vegas, NV','North Las Vegas, NV'};
match = strcmp(loc,'Las Vegas, NV')
  댓글 수: 4
Sara Ismail-Sutton
Sara Ismail-Sutton 2020년 9월 12일
well i'm not sure how to implement it. my task is finding directions between arbitary cities, a and b.
i've done the stage of calulated the coordinates and then get these to navigate to the right place in the table of the data which gives the distance. my code has passsed the test for random cities who's string is such that one does not contain another. but i have came across this problem for the case of las vegas and las vegas north as in the original post. For e.g in arbritary language so far is:
function[distance] = get_distance(a,b)
[words,num,raw]=xlsread('Distances.xlsx');
X = ~cellfun('isempty',strfind(cellstr(num),a));
Y = ~cellfun('isempty',strfind(cellstr(num),b));
[row col] = find(X==1);
[r c]=find(Y==1);
a1=row(1);
a2=col(1);
a=[a1 a2]
b1=r(2)
b2=c(2)
b=[b1 b2]
c=[(a1+1),(b1+1)]
distance=raw{c(1),c(2)}
end
many thanks
Paul Safier
Paul Safier 2021년 12월 21일
@the cyclist your answer was definitely what was needed. Thanks!

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Walter Roberson
Walter Roberson 2020년 9월 12일
I'm searching a cell array for an exact string
Use ismember()
  댓글 수: 7
Walter Roberson
Walter Roberson 2020년 9월 12일
X = ismember((num),a));
1 1 0
2 -1
Count your open brackets.
Sara Ismail-Sutton
Sara Ismail-Sutton 2020년 9월 12일
omg hahhaa, yeh got it from the other line anywauy, thanks alot

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