[d2n-analysis-talk] Basic ROOT Question

[Brad Sawatzky]

On Tue, 02 Mar 2010, David Flay wrote:

> In order to get my TDC histograms into ns units, I would multiply the
> variable by 10^9:
> 
> 1e+9*L.s2.lt_c[0], for instance.
> 
> This works at the command line.  However, it does <not> work if I do this
> in a macro:
> 
> rootvar.Form("((1e+9)*L.s2.lt_c[%d]):L.s2.la_c[%d]",i,i);

These lines for me with no errors on the command-line and in a simple cint
macro.
  analyzer [11] TString tmp
  analyzer [12] tmp.Form("((1e+6))*L.s1.time[1]:L.s1.rt")
  analyzer [13] tmp
  (class TString)"((1e+6))*L.s1.time[1]:L.s1.rt"
  analyzer [14] T->Draw(tmp)
    [ plot appears as you would expect ]

Odds are it is a typo somewhere else and not the multiplication that is the
issue.

-- Brad

-- 
Brad Sawatzky, PhD <brads at jlab.org>  -<>-  Jefferson Lab / Hall C / C111
  Ph: 757-269-5947 -<>- Pager: 757-584-5947 -<>- Fax: 757-269-7848
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