problems with big files plotting

Hi Rooters,

I have a problem for plotting big files of datas and i have tried to solve it by my own but i did not succeed. I have generated a big file (256825 lines) which represents the energy loss distribution of a proton in a water cube divided in voxel (3D) using Geant4. So in my file there are 4 columns (X, Y, Z, sum of the energy losses per voxel) and that in a cube which is 400 mm long, 240 mm large and 240 mm height. My goal is to write a little macro to generate events in a cube. Each event is represented by the average distribution that i obtained with G4 and so i would to plotted in 3D (X, Y and Z) this distribution and do the sum where the distribution (the events) are generated to close one from each other. So i succeed to write a little code which generates events and do the sum when 2 events crosses the same voxel but i did not succeed to plot one complete event (one complete distribution of 256825 lines), and i do not have any error message. Does anyone have an idea, perhaps my file is too big to be plotted in a TH3D ?? Thank you for your help,
Cheers,

Samarati Jerome, PH
Bld 182 R 009
tel. 79672 Received on Thu Mar 04 2010 - 17:07:13 CET