Timeline for Finding peaks and determining noise
Current License: CC BY-SA 3.0
10 events
| when toggle format | what | by | license | comment | |
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| Jun 21, 2012 at 20:06 | comment | added | Alexander Chervov | @victor for example just by "fitting" (e.g. adjust two params of gaussian such that the distance between gaussian and experimental data is minimal (distance usually sum of differences^2, but may be other depending on the model)) or another way - estimate mean and sigma by usual methods somewhere around the peak. Somewhere may be taken ad-hoc or from previous data... I think there can be many many ways... If you have some "model" then you can derive "optimal" method, if do not have model - just choose any method | |
| Jun 21, 2012 at 13:06 | comment | added | viktor.radovic | @ Alexander Chervov those peaks are Guassian, but how can I find sigma value? @ Willie Wong - Ill try asking question there too Thank you! | |
| Jun 21, 2012 at 10:52 | comment | added | Alexander Chervov | Math. analysis of such questions would require some (probabilistic or determinant) model, otherwise I am afraid it does not make sense. You should make some assumption - like noise is (un)correlated, peaks have the forms: of gaussians or smth... and so on... But making such model I guess the questions will disappear e.g. if peak is Guassian - then it is reasonable to consider [-3sigma, 3 sigma] interval around the peak.... So on | |
| Jun 21, 2012 at 10:43 | comment | added | Willie Wong | your question is much much more about data analysis techniques then anything else. I suggest you ask instead at stats.stackexchange.com/faq or scicomp.stackexchange.com/faq (I think the first fits better you needs, but you may decide otherwise). Also, there are established peak fitting softwares available in the wild (Origin, Igor of the general data analysis softwares; R if you want something powerful and used by statisticians). | |
| Jun 21, 2012 at 9:07 | comment | added | viktor.radovic | I changed question, i hope it is much understandable now | |
| Jun 21, 2012 at 9:06 | history | edited | viktor.radovic | CC BY-SA 3.0 |
added 213 characters in body; deleted 1 characters in body
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| Jun 20, 2012 at 17:04 | comment | added | Noah Stein | I removed some of the tags whose relevance seemed hard to imagine, but I agree that this question as it stands needs significant elaboration and cleanup to be understandable. | |
| Jun 20, 2012 at 17:03 | history | edited | Noah Stein |
Removed spectral sequence tag; edited tags
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| Jun 20, 2012 at 14:28 | comment | added | Chris Godsil | Very few people will be able to understand what you're asking here, I expect. I certainly cannot. | |
| Jun 20, 2012 at 12:03 | history | asked | viktor.radovic | CC BY-SA 3.0 |