ROOT Version: Not Provided Platform: Not Provided Compiler: Not Provided
Hey Guys, I have a trouble when I tried to use the TSpectrum function: SearchHigRes, it always tell me
Error: Can’t call TSpectrum2::SearchHighRes(source,dest,n,m,0.1,0.4,kTRUE,1,kFALSE,1) in current scope newtry3.cc:206:
Possible candidates are…
(in TSpectrum2)
My code, data file are attached here. By the way, I use the SearchHighRes simply because the search could not give me the preferred result. It always ended up finding something in the background.image65_2.txt (1.3 MB) newtry3.cc (6.6 KB)
$ root newtry3.cc
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| Welcome to ROOT 6.15/01 https://root.cern |
| (c) 1995-2018, The ROOT Team |
| Built for macosx64 on Oct 18 2018, 09:41:34 |
| From heads/master@v6-13-04-1801-g51bad13f4f |
| Try '.help', '.demo', '.license', '.credits', '.quit'/'.q' |
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root [0]
Processing newtry3.cc...
Error in <TSpectrum2::SearchHighRes>: Invalid sigma, must be greater than or equal to 1
Info in <TCanvas::MakeDefCanvas>: created default TCanvas with name c1
Number of positions = 0
Gener=30, Found=0, Good=0, Ghost=0
Dear Couet,
Thanks very much for the reply. In fact, I do not have a good understanding of what parameters are reasonable since I have just started using this function. I tried to change the sigma, but the problem is still here:
Error: Can’t call TSpectrum2::SearchHighRes(source,dest,n,m,3,3,kTRUE,1,kFALSE,1) in current scope newtry3.cc:65:
Do you think it might be a version problem? I had my ROOT in 2016 summer. Is it too old to do something? In addition to this, the search could work, but it found some weird peaks. I believe under the cut I set in the code, it could find nothing even the background is almost clear, and clear peaks could be seen from draw “SURF7”.
Thanks for Yus and Coyote’s reply. I have successfully done the searching. However, the last small problem is that I could not see any marker on the drawn histogram (or canvas) and thus it is hard for me to modify the sigma. Is there any suggestion? (For the example of searching 2D peaks provided by root, I could clearly see the marker)
hey Couet, I followed your code and change the double ** to float. I expect to see some markers on the peaks the ROOT found. Specifically, I started with the TSpectrum by learning this example here: https://root.cern.ch/root/html/tutorials/spectrum/peaks2.C.html, which has the marker on the found peak. However, I could not see the marker from the high resolution search option.
I modified your attached code (change double** to float ** and set the sigma as 3), and this was what I obtained. It could tell me where were the peaks( and it was reasonable I believe), but it didn’t show any markers like the peaks2.C did( downtriangular).
$ root newtry3.cc
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* *
* W E L C O M E to R O O T *
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* Version 5.34/39 12 March 2018 *
* *
* You are welcome to visit our Web site *
* http://root.cern.ch *
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ROOT 5.34/39 (heads/v5-34-00-patches@v5-34-38-1-g507abd2, Aug 31 2018, 15:17:00 on macosx64)
CINT/ROOT C/C++ Interpreter version 5.18.00, July 2, 2010
Type ? for help. Commands must be C++ statements.
Enclose multiple statements between { }.
root [0]
Processing newtry3.cc...
Number of positions = 0
Found=0, Good=0, Ghost=0
root [1]
hi Couet, it is a really weird problem. From my screen shoot you could clearly see the out put found peaks. I wonder the background cut or the sigma may affect result a lot.
oops … true … !!! sorry for that. There was no message saying that a file was not found that’s what I thought I had every thing… thanks to have seen it. Looking at it.
