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MATLAB Central > MATLAB Newsreader > Find rising point of peak in noisy data 

Subject: Find rising point of peak in noisy data From: Steve Sachay Date: 26 Jan, 2011 19:43:04 Message: 1 of 11 
Hi. I have some noisy data with peaks that I wish to find, however it's not the maximum of the peak I am after. I'd like to be able to determine where the peak begins to rise from the baseline. Of course it doesn't have to be perfect, a good estimation is fine. The peaks are fairly clear and relatively narrow when they do rise I can pick them out easily by hand but I have a lot of data to go through. Simple derivative based solutions are not working due to the noise. Is there a function that could help? Thanks. 
Subject: Find rising point of peak in noisy data From: TideMan Date: 26 Jan, 2011 21:49:50 Message: 2 of 11 
On Jan 27, 8:43 am, "Steve Sachay" <core...@gmail.com> wrote: 
Subject: Find rising point of peak in noisy data From: Paulo Silva Date: 26 Jan, 2011 22:12:03 Message: 3 of 11 
"Steve Sachay" wrote in message <ihptg8$h6g$1@fred.mathworks.com>... 
Subject: Find rising point of peak in noisy data From: Steve Sachay Date: 27 Jan, 2011 05:05:04 Message: 4 of 11 
"Paulo Silva" wrote in message <ihq67j$joa$1@fred.mathworks.com>... 
Subject: Find rising point of peak in noisy data From: Paulo Silva Date: 27 Jan, 2011 06:53:03 Message: 5 of 11 
"Steve Sachay" wrote in message <ihque0$gra$1@fred.mathworks.com>... 
Subject: Find rising point of peak in noisy data From: Steve Sachay Date: 27 Jan, 2011 16:33:04 Message: 6 of 11 
"Paulo Silva" wrote in message <ihr4of$41u$1@fred.mathworks.com>... 
Subject: Find rising point of peak in noisy data From: Paulo Silva Date: 27 Jan, 2011 19:34:03 Message: 7 of 11 
"Steve Sachay" wrote in message <ihptg8$h6g$1@fred.mathworks.com>... 
Subject: Find rising point of peak in noisy data From: fburton@nyx.net (Fra... Date: 27 Jan, 2011 20:14:56 Message: 8 of 11 
In article <ihs6o0$arn$1@fred.mathworks.com>, 
Subject: Find rising point of peak in noisy data From: Steve Sachay Date: 27 Jan, 2011 22:11:03 Message: 9 of 11 
"Paulo Silva" wrote in message <ihshbb$m2o$1@fred.mathworks.com>... 
Subject: Find rising point of peak in noisy data From: fburton@nyx.net (Fra... Date: 28 Jan, 2011 15:18:24 Message: 10 of 11 
In article <ihsqhn$m68$1@fred.mathworks.com>, 
Subject: Find rising point of peak in noisy data From: Steve Sachay Date: 28 Jan, 2011 16:31:19 Message: 11 of 11 
fburton@nyx.net (Francis Burton) wrote in message <1296227906.852290@irys.nyx.net>... 
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