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MATLAB Help  Comparing values/Indexing 
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#1
Mar1810, 10:30 PM

P: 4

1. The problem statement, all variables and given/known data
I am very, very new to MATLAB, and can't seem to figure out this seemingly simple problem. Given a tarray and a yarray for a decaying exponential function, my task is to find the first relative maximum in the graph without using Matlab's preset relative max. functions. I'm attempting to do this by comparing yvalues at a certain "t" to yvalues at "t0" and "t1" (before and after "t"). I'm using indexing, for loops, etc. 2. Relevant equations N/A 3. The attempt at a solution function[max,t_max] = relMax(t,y) for i = 1:.001:length(t); y(:,i+1) = y; y0 = y(:,i); y1 = y(:,i+2); if (y0<y && y>y1) max = y; disp(max) t_max = t; disp(t) break end end  Clearly I am making some kind of stupid mistake here. I don't really know how to use indexing very well, and it's causing me problems. Thanks in advance! 


#2
Mar1910, 08:27 AM

P: 639

for i = 1: length(t) 0.001 is the increment in t, not in the index. 


#3
Mar1910, 11:19 AM

P: 4

Thank you! I figured out what I was doing wrong. :)



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