added info if fit does not converge

src/classes/PFitter.cpp

@@ -63,6 +63,19 @@ using namespace std;
 PFitter::PFitter(PMsrHandler *runInfo, PRunListCollection *runListCollection, bool chisq_only) :
   fChisqOnly(chisq_only), fRunInfo(runInfo)
 {
+/*
+PRunData *data=runListCollection->GetSingleHisto(0);
+fstream fout( "__test.dat", ios_base::out ); 
+fout << data->fDataTimeStart << endl;
+fout << data->fDataTimeStep << endl;
+fout << "------" << endl;
+fout << data->fValue.size() << endl;
+fout << "------" << endl;
+for (unsigned int i=0; i<data->fValue.size(); i++) {
+  fout << data->fValue[i] << ", " << data->fError[i] << endl;
+}
+fout.close();
+*/
   fUseChi2 = true; // chi^2 is the default
 
   fParams = *(runInfo->GetMsrParamList());
@@ -141,7 +154,7 @@ bool PFitter::DoFit()
   else
     cout << endl << "Maximum Likelihood fit will be executed" << endl;
 
-  bool status;
+  bool status = true;
   // init positive errors to default false, if minos is called, it will be set true there
   for (unsigned int i=0; i<fParams.size(); i++) {
     fRunInfo->SetMsrParamPosErrorPresent(i, false);
@@ -212,6 +225,16 @@ bool PFitter::DoFit()
         exit(0);
         break;
     }
+
+    // check if command has been successful
+    if (!status)
+      break;
+  }
+
+  if (IsValid()) {
+    fRunInfo->GetMsrStatistic()->fValid = true;
+  } else {
+    fRunInfo->GetMsrStatistic()->fValid = false;
   }
 
   return true;
@@ -411,6 +434,7 @@ bool PFitter::ExecuteMigrad()
       fRunInfo->SetMsrParamPosErrorPresent(i, false);
     }
 */
+    fIsValid = false;
     return false;
   }
 
@@ -482,6 +506,7 @@ bool PFitter::ExecuteMinimize()
       fRunInfo->SetMsrParamPosErrorPresent(i, false);
     }
 */
+    fIsValid = false;
     return false;
   }
 
@@ -539,7 +564,7 @@ bool PFitter::ExecuteMinos()
 
   // check if minimum was valid
   if (!fFcnMin->IsValid()) {
-    cout << endl << "**ERROR**: MINOS cannot started since the previews minimization faild :-(";
+    cout << endl << "**ERROR**: MINOS cannot started since the previews minimization failed :-(";
     cout << endl;
     return false;
   }
@@ -841,6 +866,7 @@ bool PFitter::ExecuteSimplex()
   ROOT::Minuit2::FunctionMinimum min = simplex(maxfcn, tolerance);
   if (!min.IsValid()) {
     cout << endl << "**WARNING**: PFitter::ExecuteSimplex(): Fit did not converge, sorry ...";
+    fIsValid = false;
     return false;
   }
 

src/classes/PMsrHandler.cpp

@@ -60,6 +60,7 @@ PMsrHandler::PMsrHandler(char *fileName)
 
   fTitle = "";
 
+  fStatistic.fValid = false;
   fStatistic.fChisq = true;
   fStatistic.fMin   = -1.0;
   fStatistic.fNdf   = 0;
@@ -799,21 +800,26 @@ int PMsrHandler::WriteMsrLogFile()
     fStatistic.fStatLines.clear();
     // create the new statistics block
     PMsrLineStructure line;
-    if (fStatistic.fChisq) { // chi^2
-      line.fLine  = "  chisq = ";
-      line.fLine += fStatistic.fMin;
-      line.fLine += ", NDF = ";
-      line.fLine += fStatistic.fNdf;
-      line.fLine += ", chisq/NDF = ";
-      line.fLine += fStatistic.fMin / fStatistic.fNdf;
-      cout << endl << line.fLine.Data() << endl;
+    if (fStatistic.fValid) { // valid fit result
+      if (fStatistic.fChisq) { // chi^2
+        line.fLine  = "  chisq = ";
+        line.fLine += fStatistic.fMin;
+        line.fLine += ", NDF = ";
+        line.fLine += fStatistic.fNdf;
+        line.fLine += ", chisq/NDF = ";
+        line.fLine += fStatistic.fMin / fStatistic.fNdf;
+        cout << endl << line.fLine.Data() << endl;
+      } else {
+        line.fLine  = "  maxLH = ";
+        line.fLine += fStatistic.fMin;
+        line.fLine += ", NDF = ";
+        line.fLine += fStatistic.fNdf;
+        line.fLine += ", maxLH/NDF = ";
+        line.fLine += fStatistic.fMin / fStatistic.fNdf;
+        cout << endl << line.fLine.Data() << endl;
+      }
     } else {
-      line.fLine  = "  maxLH = ";
-      line.fLine += fStatistic.fMin;
-      line.fLine += ", NDF = ";
-      line.fLine += fStatistic.fNdf;
-      line.fLine += ", maxLH/NDF = ";
-      line.fLine += fStatistic.fMin / fStatistic.fNdf;
+      line.fLine = "*** FIT DID NOT CONVERGE ***";
       cout << endl << line.fLine.Data() << endl;
     }
     fStatistic.fStatLines.push_back(line);

src/classes/PRunSingleHisto.cpp

@@ -141,7 +141,7 @@ double PRunSingleHisto::CalcChiSquare(const std::vector<double>& par)
     time = fData.fDataTimeStart + (double)i*fData.fDataTimeStep;
     if ((time>=fFitStartTime) && (time<=fFitStopTime)) {
       diff = fData.fValue[i] -
-            (N0*TMath::Exp(-time/tau)*(1+fTheory->Func(time, par, fFuncValues))+bkg);
+            (N0*TMath::Exp(-time/tau)*(1.0+fTheory->Func(time, par, fFuncValues))+bkg);
       chisq += diff*diff / (fData.fError[i]*fData.fError[i]);
     }
   }

src/include/PMusr.h

@@ -320,6 +320,7 @@ typedef vector<PMsrPlotStructure>  PMsrPlotList;
  * <p>
  */
 typedef struct {
+  bool fValid;
   PMsrLines fStatLines;
   TString fDate;     ///< string holding fitting date and time
   bool   fChisq;     ///< flag telling if min = chi2 or min = max.likelyhood

src/musrfit.cpp

@@ -512,7 +512,7 @@ int main(int argc, char *argv[])
   for (int i=2; i<argc; i++) {
     if (!strcmp(argv[i], "-k") || !strcmp(argv[i], "--keep-mn2-output")) {
       keep_mn2_output = true;
-    } else if (!strcmp(argv[i], "-c") || !strcmp(argv[1], "--chisq-only")) {
+    } else if (!strcmp(argv[i], "-c") || !strcmp(argv[i], "--chisq-only")) {
       chisq_only = true;
     } else if (!strcmp(argv[i], "--debug")) {
       debug = true;