[ROOT] Hesse

From: Arthur E. Snyder (snyder@slac.stanford.edu)
Date: Tue Sep 28 2004 - 02:35:55 MEST

After I've fit a histogram is there some way a can invoke Hesse?

-Art S.

A.E. Snyder, Group EC                        \!c*p?/
SLAC Mail Stop #95                          ((.   .))
Box 4349                                        |
Stanford, Ca, USA, 94309                      '\|/`
e-mail:snyder@slac.stanford.edu                 o
phone:650-926-2701                              _
http://www.slac.stanford.edu/~snyder          BaBar
FAX:650-926-2657                          Collaboration

On Wed, 22 Sep 2004, Hall, Carter R. wrote:

> Hello ROOTers,
> I'm need some advice about variable
> length arrays. I'd like to make a tree which
> contains several arrays. In any one tree
> the arrays will all have the same length, but
> I may produce several trees in which the
> array lengths will differ, so I've declared
> the arrays as having variable length for rootcint.
> (Also, the number of arrays can change from
> one event to the next within the same tree.)
> To do this I put the array into a class, "MyArray",
> along with a data member giving the length. Then I
> make a TClonesArray of MyArrays, and put them into
> an "Event" object that goes in a tree.
> I'm able to create the tree, write it to a file,
> read it, and look at the data with Draw. However,
> when I use MakeClass to create a macro, called
> "TestClass", and execute its constructor, the
> data in my tree becomes lost. This occurs when
> the SetMakeClass(1) statement is executed.
> The attached tarfile contains a script called
> "test_it.C" that should make the library containing
> the classes and illustrate the problem.
> I'm guessing that the problem is with the way
> I've defined my tree... perhaps there is a simpler
> solution?
> I'm using ROOT 4.00/08 on a Sun Enterprise 420.
> Thanks in advance,
> Carter Hall

This archive was generated by hypermail 2b29 : Sun Jan 02 2005 - 05:50:09 MET