[ROOT] Data from CCDs

From: Florian Schopper (fls@ipp.mpg.de)
Date: Mon May 14 2001 - 17:07:54 MEST


Dear rooters, 

we want to implement analysis-software for a CCD-readout using
root.  The Data consists then of sets of 2D-frames of Float-data.  
What class would be the most straightforward way of storing the frames, such 
that the data can be easily analysed, projected, visualized ....
I thought of either 3D-Hists or ntuples (adc:row:col:framenumber), but:  

- 3D-Hists are nice to project into 1D, 2D Hists for analysis, but if you 
want to add more frames or continuously add frames, increasing the size 
seems unappropriate.  

- ntuples seem to be a waste of Memory because row and col are indexes only 
and not Floats.  
I also thought of using arrays of 2D-Hists but they are then
uncomfortable to project in the direction of Pixel versus Framenumber.  

Are there more appropriate classes which I didn`t consider, or should we
implement our own class?  

cheers,
Florian      


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Florian Schopper                     office: MPI Halbleiterlabor

Ludwig-Merk str. 3                           Otto-Hahn-Ring 6 , Gebäude 72
D-80805 München                           D-81739 München 
Germany                                      Germany 


phone: 49/89/32455680                        phone mpe: 49/89/30000 3625
                                             phone HLL: 49/89/839400-45

                     e-mail: fls@mpe.mpg.de
       http://www.gamma.mpe-garching.mpg.de/MEGA/mega.html 
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