how can I interpolate?
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hi all. I have some data and I want to interpolate z in this data. I used this code:
% year2012=xlsread('year2012');
year2012=double(year2012);
X=year2012(1:91,1);
Y=year2012(1:91,2);
Z=year2012(1:91,3);
x=year2012(1:91,4);
y=year2012(1:91,5);
z = interp2(X,Y,Z,x,y);
but I have this error :
% Error using griddedInterpolant
The coordinates of the input points must be finite values; Inf and NaN are not permitted.
Error in interp2>makegriddedinterp (line 228)
F = griddedInterpolant(varargin{:});
Error in interp2 (line 128)
F = makegriddedinterp({X, Y}, V, method,extrap);
Error in new (line 19)
z = interp2(X,Y,Z,x,y,'nearest');code
I attached my data and I think my data is true. can you please guide me?
回答（1 个）
Andrei Bobrov
2016-5-18
F = scatteredInterpolant(X,Y,Z);
out = F(x,y);
6 个评论
thanks dear Andrei Bobrov. I used this and I got answer.. but Is this work like interpolation? I mean that Imagine that we have X and Y and our observation in this point IS Z and (X,Y) is nearest point to (x,y) and now we should find the observation in (x,y) point, z. Is this code can help me? this picture may help you.
thanks
Walter Roberson
2016-5-19
zbar = F(xbar, ybar)
jack nn
2016-5-20
Walter Roberson
2016-5-20
Like Andrei posted, F = scatteredInterpolant(X,Y,Z);
jack nn
2016-5-20
Walter Roberson
2016-5-20
Go ahead and create another Question.
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2016-5-20
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