Changeset 1305 for trunk/MagicSoft/Mars/mdata

Timestamp:

04/26/02 13:16:11 (23 years ago)

Author:

tbretz

Message:

*** empty log message ***

Location:

trunk/MagicSoft/Mars/mdata

Files:

• MDataChain.cc (modified) (1 diff)
• MDataChain.h (modified) (1 diff)
• MDataList.h (modified) (1 diff)
• MDataMember.h (modified) (1 diff)
• MDataValue.h (modified) (1 diff)

trunk/MagicSoft/Mars/mdata/MDataChain.cc

@@ -26 +26 @@
 //
 //   MDataChain
+//
+// With this chain you can concatenate simple mathematical operations on
+// members of mars containers.
+//
+// In the constructor you can give rule, like
+//   "HillasSource.fDist / MHillas.fLength"
+// Where MHillas/HillasSource is the name of the parameter container in
+// the parameter list and fDist/fLength is the name of the data members
+// in the containers. The result will be fDist divided by fLength.
+//
+// You can also use brackets:
+//   "HillasDource.fDist / (MHillas.fLength + MHillas.fWidth)"
+//
+// The allowed operations are: +, -, *, /
+//
+// Warning: There is no priority rule build in. So better use brackets
+//   to get correct results. The rule is parsed/evaluated from the left
+//   to the right, which means:
+//
+//   "MHillas.fWidth + MHillas.fLength / HillasSource.fDist"
+//
+//    is parses as
+//
+//   "(MHillas.fWidth + MHillas.fLength) / HillasSource.fDist"
+//
+//
+// FIXME: The possibility to use other objects inheriting from MData
+//        is missing.
+//        Maybe we can use gInterpreter->Calc("") for this.
+//        gROOT->ProcessLineFast("line");
 //
 /////////////////////////////////////////////////////////////////////////////

trunk/MagicSoft/Mars/mdata/MDataChain.h

@@ -34 +34 @@
     void Print(Option_t *opt = "") const;
 
-    ClassDef(MDataChain, 0) // A Filter for cuts in any data member
+    ClassDef(MDataChain, 0) // A chain/concatenation of MData objects
 };
 

trunk/MagicSoft/Mars/mdata/MDataList.h

@@ -47 +47 @@
     void Print(Option_t *opt = "") const;
 
-    ClassDef(MDataList, 0)              // List to combine several filters logically
+    ClassDef(MDataList, 0) // A concatenation of MData objects by one operator
 };
 

trunk/MagicSoft/Mars/mdata/MDataMember.h

@@ -32 +32 @@
     void Print(Option_t *opt = "") const;
 
-    ClassDef(MDataMember, 0)    // List to combine several filters logically
+    ClassDef(MDataMember, 0) // MData object corresponding to a single data member of a Mars container
 };
 

trunk/MagicSoft/Mars/mdata/MDataValue.h

@@ -29 +29 @@
     void Print(Option_t *opt = "") const;
 
-    ClassDef(MDataValue, 0)     // List to combine several filters logically
+    ClassDef(MDataValue, 0) // MData object corresponding to a single value
 };