git-svn-id: file:///home/svn/opt_utilities@227 ed2142bd-67ad-457f-ba7c-d818d4011675

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diff --git a/vmodels/gauss1d_bkg.hpp b/vmodels/gauss1d_bkg.hpp
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+/**
+   \file gauss1d.hpp
+   \brief Gauss model
+   \author Junhua Gu
+ */
+
+#ifndef GAUSS_MODEL_BKG_H_
+#define GAUSS_MODEL_BKG_H_
+#define OPT_HEADER
+#include <core/fitter.hpp>
+#include <cmath>
+#include <misc/optvec.hpp>
+
+namespace opt_utilities
+{
+  template <typename T>
+  class gauss1d_bkg
+    :public model<optvec<T>,optvec<T>,optvec<T>,std::string>
+  {
+  private:
+    gauss1d_bkg* do_clone()const
+    {
+      return new gauss1d_bkg<T>(*this);
+    }
+
+    const char* do_get_type_name()const
+    {
+      return "1d gaussian with bkg";
+    }
+  public:
+    gauss1d_bkg()
+    {
+      this->push_param_info(param_info<optvec<T> >("N",1));
+      this->push_param_info(param_info<optvec<T> >("x0",0));
+      this->push_param_info(param_info<optvec<T> >("sigma",1));
+      this->push_param_info(param_info<optvec<T> >("bkg",0));
+    }
+
+  public:
+    optvec<T> do_eval(const optvec<T>& x,const optvec<T>& param)
+    {
+      T N=get_element(param,0);
+      T x0=get_element(param,1);
+      T sigma=get_element(param,2);
+      T bkg=get_element(param,3);
+      optvec<T> y=(x-x0)/sigma;
+      return N*exp(-y*y/2.)+bkg;
+    }
+
+  private:
+    std::string do_get_information()const
+    {
+#ifdef WITH_OPT_DOC
+#include <model_doc/gauss1d_bkg.info>
+#endif
+      return "";
+    }
+  };
+}
+
+
+
+#endif
+//EOF