Index: trunk/MagicSoft/Mars/mdatacheck/MHHillas.cc
===================================================================
--- trunk/MagicSoft/Mars/mdatacheck/MHHillas.cc	(revision 705)
+++ trunk/MagicSoft/Mars/mdatacheck/MHHillas.cc	(revision 706)
@@ -11,4 +11,5 @@
 #include <TH1.h>
 #include <TPad.h>
+#include <TCanvas.h>
 
 #include "MHillas.h"
@@ -36,7 +37,7 @@
     //
     fAlpha  = new TH1F("Alpha [deg]", "Alpha of Hillas",   90, 0,  90);
-    fWidth  = new TH1F("Width [mm]",  "Width of Hillas",  150, 0, 150);
-    fLength = new TH1F("Length [mm]", "Length of Hillas", 150, 0, 150);
-    fDist   = new TH1F("Dist [mm]",   "Dist of Hillas",   200, 0, 200);
+    fWidth  = new TH1F("Width [mm]",  "Width of Hillas",  100, 0, 300);
+    fLength = new TH1F("Length [mm]", "Length of Hillas", 100, 0, 300);
+    fDist   = new TH1F("Dist [mm]",   "Dist of Hillas",   100, 0, 300);
 }
 
@@ -51,5 +52,5 @@
 void MHHillas::Fill(MHillas *par)
 {
-    fAlpha ->Fill(par->GetAlpha());
+    fAlpha ->Fill(fabs(par->GetAlpha()));
     fWidth ->Fill(par->GetWidth());
     fLength->Fill(par->GetLength());
@@ -57,8 +58,11 @@
 }
 
-#include <TCanvas.h>
 void MHHillas::Draw(Option_t *)
 {
 
+    //
+    // Fixme! Check for an existing canvas.
+    // And create one if no canvas exists only!
+    //
     TCanvas *c = new TCanvas("Hillas", "Histograms of Hillas Parameters");
     c->Divide(2,2);