I have plotted a graph of (y,t). I need to get 5 minimum and 5 maximum values with the corresponding Y values. My code below is just for one min and max value of T.

min_T= min(T)
max_T=max(T)

index = find(T == min_T);
YAtMin = Y(index)

Answer 1

[Image Analyst]

Just sort the data and take the first 5 and last 5 sorted elements:

clc;
T = randi(99, 1, 11) % Generate sample data.
[sortedT, sortOrder] = sort(T, 'ascend')
% Extract the mins and maxes:
theMins = sortedT(1:5)
theMinIndexes = sortOrder(1:5)
% Determine their indexes in the original array.
theMaxes = sortedT(end-4:end)
theMaxIndexes = sortOrder(end-4:end)

In the command window:

T =
    85    93    68    76    74    39    65    17    70     4    28
sortedT =
     4    17    28    39    65    68    70    74    76    85    93
sortOrder =
    10     8    11     6     7     3     9     5     4     1     2
theMins =
     4    17    28    39    65
theMinIndexes =
    10     8    11     6     7
theMaxes =
    70    74    76    85    93
theMaxIndexes =
     9     5     4     1     2

[Image Analyst]

If you have "y" values along the x/independent/horizontal axis, then just extract the y values using the indexes

yOfMins = y(sortOrder(1:5))
yOfMaxes = y(sortOrder(end-1:end))

[Arshadh]

Hey, Thanks a lot. Really appreiate it!!