Hi, All Experts,
Suppose I want to draw a cloud,or a density picture According to some
probability, I generated a lot of coordinates (x,y,z) which reflect the
density in 3D space. I then put x,y,z into a ntuple (tree). So my ntuple
is like:
myTree
| | |
x y z
Then I have the following operation:
new TBrowser();
From the browser, find the tree, clich right button on my mouse
and choose StartViewer, on this TreeViewer, I put _1.x into red X, _1.y
into red Y, _1.z into red Z. Then I press blue Draw, I get the cloud or
density 3D picture. I noticed that root automatically generate a command:
ntupleVertexRaw->Draw("_1.z:_1.y:_1.x", "", "", 3292, 0);
My question is:
How to set the range of x,y,z? right now I do not have control over
the range of x,y,z. Is it possible to set range somewhere, or there are
some other ways to do the same thing?
Thanks a lot!
Kai Yi
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