%% Elements Equal to Specific Values
% To find a specific integer value, use the == operator. For instance, find the element equal to 13 in a 1-by-10 vector of odd integers.

x = 1:2:20

%

k = find(x==13)

%
% To find a noninteger value, use a tolerance value based on your data. Otherwise, the result is sometimes an empty matrix due to floating-point roundoff error.

y = 0:0.1:1

%

k = find(y==0.3)

%

k = find(abs(y-0.3) < 0.001)

% Copyright 2015 The MathWorks, Inc.