How to extract data between start and end points of flood as separate events?

Hello,

I have a code that calculates Start, Peak, and end points for a specified peak over threshold flood. i.e., the number of peakes indicates the number of flood events that exceeds a threshold in that dataseries. now i want to extract the data for each event and use it as separate variables. can anyone helpe with this please?? i have included an example for demonstration of what i neet.

peak points=(1:n)

start points=(1:n)

end points=(1:n)

ev1(data)=data between st(1):en(1)

ev2(data)=data between st(2):en(2)

.

.

ev(n)(data)=data between st(n):en(n)

Answer 1

[Walter Roberson]

ev = arrayfun(@(sp, ep) peakpoints(sp:ep), start_points, end_points, 'uniform', 0);

[Hazhan Majeed]

Hi Walter Robenson

thanks for your help. it gives me this error

ev = arrayfun(@(shloc,ehloc) pksloc(shloc:ehloc), shloc, ehloc, 'uniform', 0);

Nonfinite endpoints or increment for colon operator in index.

Error in @(shloc,ehloc)pksloc(shloc:ehloc)

[Walter Roberson]

Could you confirm that your shloc and ehloc are indices, and not x values? And also that none of the values is -inf or inf or nan ?

Also, I recommend against using the same dummy variable names for the anonymous function as you use full variable names: what you did gets confusing over whether at any point the name refers to the vector or to a particular entry in the vector. That is why I used sp and ep instead of start_points and end_points to make it clear within the anonymous function call that you were working with single values passed in at that point, not with the entire vector.