Changes between Version 76 and Version 77 of HowToAddSample

Timestamp:

Jan 9, 2017, 3:04:40 PM (7 years ago)

Author:

Clarence Wret

Comment:

--

HowToAddSample

@@ -181 +181 @@
 
 which currently all have to be passed. In reality, both `rw` and `fakeDataFile` do nothing in `SetupMeasurement` but are left for legacy reasons. We will likely change this soon!
+
+{{{
+#!div class="important"
+
+'''Optional:'''
+Specifying `type` enables configuration of the class on run-time in the constructor. `type` is a `std::string` that gets read from the card file specified by the user at the end of each line. 
+
+This is useful if the same measurement is made but with different kinematic cuts, e.g. ANL CC1π^+^1p has W < 1.4, 1.6 and no cut data. We could pass arguments in our card file to load different data and cut at different W values on run-time without having to add in a new class for each W cut.
+
+To get the `type` running smoothly you need to changed the `Measurement1D protected` members `fDefaultTypes` and `fAllowedTypes` to whatever strings you want to accept in the card file, whilst also including the defaults (`"FIX, FREE, SHAPE"`). `type` gets checked against the `fAllowedTypes` in the `SetupMeasurement` to ensure a consistent and expected loading.
+
+----
+'''Example:''' I want to make ANL CC1π^+^1p accept W14 as an argument so I can cut on this variable and check how the generator performs over different W cuts vs data. 
+
+In the constructor I'll need to add:
+{{{
+  fDefaultTypes = "FIX/DIAG";
+  fAllowedTypes = "FIX,FREE,SHAPE/DIAG/W14";
+
+  if (type.find("W14") != std::string::npos) {
+    ...
+    Do different stuff because I want W14 data, e.g. set a bool
+    ...
+  } else {
+    ...
+    Do some other stuff when I don't want W14 data + cuts
+    ...
+  }
+}}}
+
+I then act accordingly in `isSignal` and `FillEventVariables` (e.g. fill histogram only when W < 1.4, only count signal when W < 1.4).
+
+When I want to run with this new setting I first recompile and then edit my card file to
+{{{
+sample   ANL_CC1ppip_XSec_1DEnu_nu NEUT:MY_NEUT_FILE_LOCATION.root   W14
+}}}
+which '''should' load up whatever I specified when writing `W14` in the implementation file.
+----
+}}}
+
 
 Looking at the base classes which we are inheriting our sample from (`Measurement1D` and `MeasurementBase`, both in `src/FitBase`), we minimally need to set: