some fixes

Author: martamaja10

tree/dataframe/src/RDataFrame.cxx

@@ -264,7 +264,7 @@ df.Filter([] (ULong64_t e) { return e == 1; }, {"event"}).Histo1D<RVec<float>>("
    <td>
 ~~~{cpp}
 // object selection: for each event, fill histogram with array of selected pts
-tree->Draw('Muon_pt', 'Muon_pt > 100')
+tree->Draw('Muon_pt', 'Muon_pt > 100');
 ~~~
    </td>
    <td>
@@ -1939,7 +1939,7 @@ tree->Draw("x", "y > 2");
 ~~~{.cpp}
 ROOT::RDataFrame df("myTree", file);
 auto h = df.Filter("y > 2").Histo1D("x");
-h->Draw()
+h->Draw();
 ~~~
    </td>
 </tr>
@@ -1971,24 +1971,23 @@ tree->Draw("event.GetNtrack()");
    </td>
    <td>
 ~~~{cpp}
-auto df1 = df.Define("NTrack","event.GetNtrack()")
-// note: auto df2 = df.Define("ntrack","GetNtrack()") will not work 
-auto df2 = df1.Histo1D<int>("NTrack")
+auto df1 = df.Define("NTrack","event.GetNtrack()");
+auto df2 = df1.Histo1D<int>("NTrack");
 ~~~
    </td>
 </tr>
 <tr>
    <td>
 ~~~{cpp}
 // Draw only every 10th event
-tree->Draw("fNtrack","fEvtHdr.fEvtNum%10 == 0")
+tree->Draw("fNtrack","fEvtHdr.fEvtNum%10 == 0");
 ~~~
    </td>
    <td>
 ~~~{cpp}
 // Use the Filter operation together with the special RDF column: `rdfentry_`
-auto histo = df.Filter("rdfentry_ % 10 == 0").Histo1D<int>("fNtrack")
-histo->Draw()
+auto histo = df.Filter("rdfentry_ % 10 == 0").Histo1D<int>("fNtrack");
+histo->Draw();
 ~~~
    </td>
 </tr>
@@ -2002,7 +2001,7 @@ tree->Draw('Muon_pt', 'Muon_pt > 100')
    <td>
 ~~~{cpp}
 // with RDF, arrays are read as ROOT::VecOps::RVec objects
-df.Define("good_pt", "Muon_pt[Muon_pt > 100]").Histo1D<float>("good_pt")
+df.Define("good_pt", "Muon_pt[Muon_pt > 100]").Histo1D<float>("good_pt");
 ~~~
    </td>
 </tr>
@@ -2011,24 +2010,24 @@ df.Define("good_pt", "Muon_pt[Muon_pt > 100]").Histo1D<float>("good_pt")
    <td>
 ~~~{cpp}
 // Draw the histogram and fill hnew with it
-tree->Draw("sqrt(x)>>hnew","y>0") 
+tree->Draw("sqrt(x)>>hnew","y>0"); 
 
 // Retrieve hnew from the current directory
 TH1F *hnew = (TH1F*)gDirectory->Get("hnew");
 
 // Retrieve hnew from the current Pad
-TH1F *hnew = (TH1F*)gPad->GetPrimitive("hnew")
+TH1F *hnew = (TH1F*)gPad->GetPrimitive("hnew");
 ~~~
    </td>
    <td>
 ~~~{cpp}
 // Save the histogram to a file
-TFile f("myhistos.root","new")
-auto hist = df.Filter("y>0").Histo1D<float>({"myhisto","myhisto",10, 0, 10},"x")
-hist->Write()
+TFile f("myhistos.root","new");
+auto hist = df.Filter("y>0").Histo1D<float>({"myhisto","myhisto",10, 0, 10},"x");
+f.WriteTObject(hist.GetPtr());
 
 // Retrieve the histogram
-TFile f("myhistos.root")
+TFile f("myhistos.root");
 TH1D *h = (TH1D*)f.Get("myhisto");
 ~~~
    </td>
@@ -2037,19 +2036,19 @@ TH1D *h = (TH1D*)f.Get("myhisto");
    <td>
 ~~~{cpp}
 // Draw a 1D Profile histogram instead of TH2F
-tree->Draw("y:x","","prof")
+tree->Draw("y:x","","prof");
 
 // Draw a 2D Profile histogram instead of TH3F
-tree->Draw("z:y:x","","prof")
+tree->Draw("z:y:x","","prof");
 ~~~
    </td>
    <td>
 ~~~{cpp}
 // Draw a 1D Profile histogram
-auto profile1D = df.Profile1D<int, float, double>({"profName", "profTitle", 10, 0, 10}, "x", "y");
+auto profile1D = df.Profile1D<int, float>({"profName", "profTitle", 10, 0, 10}, "x", "y");
 
 // Draw a 2D Profile histogram
-auto profile2D = df.Profile2D<int, float, double, int>({"profName", "profTitle", 10u, 0, 10, 10, 0, 10}, "x", "y", "z");
+auto profile2D = df.Profile2D<int, float, double>({"profName", "profTitle", 10u, 0, 10, 10, 0, 10}, "x", "y", "z");
 ~~~
    </td>
 </tr>
@@ -2064,7 +2063,7 @@ tree->Draw("x", "","", 2, 5);
 ~~~{cpp}
 // Range function with arguments begin, end
 auto histo_range = df.Range(5,7).Histo1D<int>("x");
-histo_range->Draw()
+histo_range->Draw();
 ~~~
    </td>
 </tr>
@@ -2073,7 +2072,7 @@ histo_range->Draw()
 ~~~{cpp}
 // Draw the X() component of the 
 // ROOT::Math::DisplacementVector3D in vec_list
-tree->Draw("vec_list.X()")
+tree->Draw("vec_list.X()");
 ~~~
    </td>
    <td>
@@ -2120,58 +2119,6 @@ df.Histo1D<double>("pt")->GetEntries();
 ~~~
    </td>
 </tr>
-<tr>
-   <td>
-~~~{cpp}
-// Draw the data member of a data member. 
-// In this example, each entry has a histogram. 
-// This command draws the maximum value of the X-axis for each histogram.
-tree->Draw("fH.fXaxis.fXmax"); // fH is of type TH1F stored in class Event 
-tree->Draw("fH.fXaxis.GetXmax()"); // fH is of type TH1F stored in class Event 
-tree->Draw("fH.GetXaxis().fXmax"); //fH is of type TH1F stored in class Event 
-tree->Draw("GetHistogram().GetXaxis().GetXmax()"); 
-~~~
-   </td>
-   <td>
-~~~{cpp}
-// RDF ? 
-~~~
-   </td>
-</tr>
-<tr>
-   <td>
-~~~{cpp}
-// Special functions and variables
-Entry$ : return the current entry number (== TTree::GetReadEntry())
-LocalEntry$ : return the current entry number in the current tree of a chain (== GetTree()->GetReadEntry())
-Entries$ : return the total number of entries (== TTree::GetEntries())
-LocalEntries$ : return the total number of entries in the current tree of a chain (== GetTree()->TTree::GetEntries())
-Length$ : return the total number of element of this formula for this entry (==TTreeFormula::GetNdata())
-Iteration$ : return the current iteration over this formula for this entry (i.e. varies from 0 to Length$).
-Length$(formula ) : return the total number of element of the formula given as a parameter.
-Sum$(formula ) : return the sum of the value of the elements of the formula given as a parameter. For example the mean for all the elements 
-in one entry can be calculated with: Sum$(formula )/Length$(formula )
-Min$(formula ) : return the minimum (within one TTree entry) of the value of the elements of the formula given as a parameter.
-Max$(formula ) : return the maximum (within one TTree entry) of the value of the elements of the formula given as a parameter.
-MinIf$(formula,condition)
-MaxIf$(formula,condition) : return the minimum (maximum) (within one TTree entry) of the value of the elements of the formula 
-given as a parameter if they match the condition. If no element matches the condition, the result is zero. To avoid the resulting peak at zero, use the pattern:
-
-~~~
-   </td>
-   <td>
-~~~{cpp}
-Entry$ : Use rdfentry_ column
-LocalEntry$ :
-Entries$ : Use Count at the beginning
-LocalEntries$ :
-Length$ : 
-Iteration$ :
-Length$(formula) : Use Count on the Defined or Filtered dataset
-Sum$(formula) : Use Sum on the Defined or Filtered dataset
-~~~
-   </td>
-</tr>
 </table>
 
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