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Entry time:
Tue Feb 3 12:09:21 2026
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<p> <table width="98%" align="center" cellspacing="1" style="border:1px solid #486090;"> <tbody> <tr> <td cellpadding="3px" style="background-color:#486090; font-weidht:bold; color:white;">Quote:</td></tr> <tr> <td cellpadding="10px" style="background-color:#FFFFB0;"><p><u><strong>Oindree</strong></u></p> <p>I am terrible at ROOT, so I have started to read the Users Guide on ROOT (attached). It's 700 pages.. so it's like a Harry Potter book, no big deal. </p> <p>Also I just learned about TChain::Draw (also in the Users Guide). Here is an example:</p> <p><span style="color:#0000FF"><em>TChain c("adu5PatTree"); </em></span></p> <p><span style="color:#0000FF"><em>for (int run_number = start_run; run_number <=end_run; run_number++) { c.Add(TString::Format("/Users/oindreebanerjee/OneDrive/flight1617/gps/gpsFile%d.root",run_number)); } </em></span></p> <p><span style="color:#0000FF"><em>c.Draw("latitude:realTime","attFlag==0", "");</em></span></p> <p>This draws, for all my runs together, latitude vs realTime, cutting on attFlag. That is, only when attFlag==0 (0 is good, 1 is bad) </p> <p><span style="color:#FFA500">f.Draw("threshold:realTime >> hthreshold","(threshold>0 && threshold<4096)","colz"); is another example. Here I have specified the draw option as colz for a 2d histogram</span></p> <p> </p> <p><u><strong>Sam</strong></u></p> <p>see attached .txt file</p> <p> </p> <p><strong><u>Brian</u></strong></p> <p>I wrote down some advice on how to actually get ROOT's time axis to work. It's in the attached "ROOT's Time Axis Feature.docx" file.</p> <p> </p> <p> </p> <p> </p> <p> </p></td> </tr> </tbody> </table> </p><p> </p>
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