Archive for February, 2010

Hello,
So I am having problems opening ROOT in lxplus. If I just call ROOT by typing “root” it says that the command isn’t found even though I am in the right directory and I have ROOT in there. I have tried typing “./root &” since that is how I open ispy in lxplus but that says Permission Denied. I have tried “chmod +x root” but it doesn’t change anything. Do you know what I am doing wrong? I am probably making a simple mistake since I don’t know many linux commands.

Andrea

Hi Edgar,
I was working on trying to figure out which muons are the hardest muons. Are the hardest muons the ones with the most energy? I scanned “mu_e”, but I can’t tell which muons have the highest energy because it seems scattered throughout the events.. I’m not sure if what I said makes sense.. I also thought that if I drew “mu_e” it would help me figure out which muons had the highest energy, but it plots the number of muons that had a particular energy, not which muon had what energy..right?
I’m aware that there is a GetMaximum function in TTree, but it won’t tell us which event produced the maximum energy..so will that help us?

Thank you,
Ashley

Hi Edgar,

I am studying the program AnalyzeRootuple.C, and I remember that we were playing with the code during class. One thing that you did is to plot a histogram for mu_charge, and you declared the float variable mu_charge by the statement: float mu_charge[200]. But I don’t understand why it’s 200…

And what happens when the statement “mytree->AddBranchAddress(“mu_charge”,μ_charge)” is executed? I originally thought that it is to turn the pointer to the branch called “mu_charge” existed in mytree. But when I check the Function Members in TTree, it says the function AddBranchAddress() returns an integer. What does that integer means? Is it a temperary label for the computer to point to where mu_charge is stored?

Thanks, Elim =)

Hey,
I just realized I left a lecture off of our schedule for classes at UniGe. Sorry about this! I corrected the schedule. There IS a QM class Wednesday evening from 4-6pm Which makes me worry about conflicts with the computing class from 2-4 on Wednesdays. I am very sorry about this.

Andrea

Elim and I cannot get our presentation to appear on the website even using her MAC. We are not sure what is going on. Also I emailed Guoan again because Vista still has problems doing this.

For iPhone user, check it out: MIT_OpenCourses_iPhone

MIT just launches a free application for iPhone where you can watch open courses whenever and wherever!

This maybe a stupid question, but does anyone know how to upload the slides to the “BU WebDAV space”? I uploaded my slides under the media here, but I don’t know if that is what it means (maybe I am wrong). Arno said something about instructions for Guoan? I am not sure if I got that email….
Thanks, Andrea

Check out these … (moved the slides to the BU WebDAV space, link is on the event post now.)

Yo, check out these slides. (moved the slides to the BU WebDAV space, link is on the event post now.)

Does anyone with mac uses the “Mail” application in the tool bar… ??

Does anyone know what the “incoming mail server” is?? If I want to put in my gmail account, what should i type in??

Thanks,
Elim =D