locating a value of a matrix from another input value

Is there a way you can use a speciifc value i.e. nth value from a vector (i.e. the 24 in the 1x5 double below) to find what the value is for that value in a matrix (point 24 in the 1x101)?

I have a 1x5double --- [24,26,26,26,29]

I have a 1x5structure which holds 5 lots of 1x101double

Many thanks in advance,

Jake

Answer 1

[Takumi]

ind = [24,26,26,26,29];
S(1).f1 = rand(1,101);
S(2).f1 = rand(1,101);
S(3).f1 = rand(1,101);
S(4).f1 = rand(1,101);
S(5).f1 = rand(1,101);
A = arrayfun(@(x) x.f1(ind),S,'UniformOutput',false);

[Jake Bowd]

Hi Takumi,

This will give me the 5 values for S(1).f1; However I am looking to use the first value in ind to be used in S(1).f1 and then the second value in ind to be used in S(2).f1 and so on.

Any suggestions on how to do that?

Best wishes,

[Takumi]

Ok. Using for loop ,most easiest.

ind = [24,26,26,26,29];
S(1).f1 = rand(1,101);
S(2).f1 = rand(1,101);
S(3).f1 = rand(1,101);
S(4).f1 = rand(1,101);
S(5).f1 = rand(1,101);

for i=1:length(ind)
    A(i) = S(i).f1(ind(i));
end

[Jake Bowd]

Hi Takumi,

Thanks. With your assistance, I got the code working:

-------

ind = Results.Average_CFTot1_location;

for x=1:length(Results.Max_Pressure_Total);

S(x).f1 = Results.Max_Pressure_Total(x).Resampled;

end

for i=1:length(ind)

A(i) = S(i).f1(ind(i));

end

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