[ROOT] log bar charts/kumacs

From: Daniel Holmes (Daniel.Holmes@cern.ch)
Date: Tue Dec 03 2002 - 11:04:49 MET


Hello RootFans,

anyone any ideas.??:...

1/i have a bar chart which upon which i would like to set the y axis as a
log axis:  i rt click on the axis and select "selectLogY". ..i then get
the error message: 

Error in <THistPainter::PaintInit>: log scale requested with zero or
negative argument (0.000000)

..i think this is not true, in fact i am reading out the (5) values as i
fill my bar chart and they are all well above 0. ,my number of bins is 5
so there are no non filled bins.  ..any thoughts anyone??


2/ I use some standard commands everytime i use root but some don't seem
to work from within a kumac.

examples are in:
/afs/cern.ch/user/d/dholmes/public/

any ideas on either of these problems are much appreciated..

cheers,

Dan.



 



CMS-Bristol
http://cern.ch/dan.holmes



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