How to find indices from a vector for values added in an array?

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Dimitris Kokkinos am 15 Mär. 2019

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https://de.mathworks.com/matlabcentral/answers/450325-how-to-find-indices-from-a-vector-for-values-added-in-an-array

Bearbeitet: Dimitris Kokkinos am 15 Mär. 2019

I have an array 'Ru' with 3 columns and 146k values (wave timeseries) each, which correspond to 50 years of measurements. I have another array 'YearLimits' (50x2) which has the time limits for each year' measurements. The 1st column has the index of the 1st measurement and the 2nd column the index of the last measurment of each year.

YearLimits=[1 2911

2912 5831

5832 8759

8760 11679

11680 14599

14600 17519

..........]

I needed to extract the max values for each year from Ru and the corresponding indices. I check each column separately. I managed the 1st one, but I need help help for the 2nd task :). My code is:

MaxVal=zeros(length(YearLimits),3);

for i=1:length(YearLimits)

for j=1:3

MaxVal(i,j)=max(Ru(YearLimits(i,1):YearLimits(i,2),j));

end

So how can I add the corresponding indices into the MaxVal array or extract them in another one??

PS: I need the indices from the Ru array that follows the numbers in the MaxVal array.

For example The MaxVal(1,1)=1,5 has an index in Ru equal to 1822.