Re #12398 Create helper class to get errors from workspace

mantidproject · Jun 15, 2015 · b6d4220 · b6d4220
1 parent 8ddecb1
commit b6d4220
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diff --git a/Code/Mantid/MantidQt/CustomInterfaces/inc/MantidQtCustomInterfaces/Muon/ALCHelper.h b/Code/Mantid/MantidQt/CustomInterfaces/inc/MantidQtCustomInterfaces/Muon/ALCHelper.h
@@ -18,6 +18,9 @@ namespace ALCHelper
   /// Create Qwt curve data from a workspace
   boost::shared_ptr<QwtData> curveDataFromWs(MatrixWorkspace_const_sptr ws, size_t wsIndex);
 
+  /// Create error vector from a workspace
+  std::vector<double> curveErrorsFromWs(MatrixWorkspace_const_sptr ws, size_t wsIndex);
+
   /// Create Qwt curve data from a function
   boost::shared_ptr<QwtData> curveDataFromFunction(IFunction_const_sptr func,
                                                  const std::vector<double>& xValues);

diff --git a/Code/Mantid/MantidQt/CustomInterfaces/src/Muon/ALCHelper.cpp b/Code/Mantid/MantidQt/CustomInterfaces/src/Muon/ALCHelper.cpp
@@ -27,6 +27,17 @@ namespace ALCHelper
     return boost::make_shared<QwtArrayData>(x,y,size);
   }
 
+  /**
+   * Creates vector of errors using E values from the workspace spectra.
+   * @param ws :: Workspace with E values to use
+   * @param wsIndex :: Workspace index to use
+   * @return Vector of errors
+   */
+  std::vector<double> curveErrorsFromWs(MatrixWorkspace_const_sptr ws, size_t wsIndex)
+  {
+    return ws->readE(wsIndex);
+  }
+
   /**
    * Creates QwtData with Y values produced by the function for specified X values.
    * @param func :: Function to use