1 files changed, 67 insertions, 0 deletions
diff --git a/vmodel/bl.hpp b/vmodel/bl.hpp
new file mode 100644
index 0000000..84d6ca5
--- /dev/null
+++ b/vmodel/bl.hpp
@@ -0,0 +1,67 @@
+#ifndef BROKEN_LINE_MODEL_H_
+#define BROKEN_LINE_MODEL_H_
+#define OPT_HEADER
+#include <core/fitter.hpp>
+#include <cmath>
+#include <misc/optvec.hpp>
+namespace opt_utilities
+{
+  template <typename T>
+  class bl
+    :public model<optvec<T>,optvec<T>,optvec<T>,std::string>
+  {
+  private:
+    model<optvec<T>,optvec<T>,optvec<T>,std::string >* do_clone()const
+    {
+      return new bl<T>(*this);
+    }
+    
+    const char* do_get_type_name()const
+    {
+      return "broken linear model";
+    }
+  public:
+    bl()
+    {
+      this->push_param_info(param_info<optvec<T> >("break point y value",1));
+      this->push_param_info(param_info<optvec<T> >("break point x value",1));
+      this->push_param_info(param_info<optvec<T> >("slop 1",1));
+      this->push_param_info(param_info<optvec<T> >("slop 2",1));
+    }
+
+  public:
+    optvec<T> do_eval(const optvec<T>& x,const optvec<T>& param)
+    {
+      T x_b=get_element(param,0);
+      T f_b=get_element(param,1);
+      T k1=get_element(param,2);
+      T k2=get_element(param,3);
+      optvec<double> result(x.size());
+      for(int i=0;i<x.size();++i)
+	{
+	  if(x[i]<x_b)
+	    {
+	      result[i]=k1*(x[i]-x_b)+f_b;
+	    }
+	  else
+	    {
+	      result[i]=k2*(x[i]-x_b)+f_b;
+	    }
+	}
+      return result;
+    }
+
+  private:
+    std::string do_get_information()const
+    {
+      return "broken linear model\n"
+	"y=k1*(x-x_b)+y_b for x<x_b\n"
+	"y=k2*(x-x_b)+y_b otherwise\n";
+    }
+  };
+}
+
+
+
+#endif
+//EOF