git-svn-id: file:///home/svn/opt_utilities@110 ed2142bd-67ad-457f-ba7c-d818d4011675

3 files changed, 196 insertions, 0 deletions

diff --git a/vmodels/beta1d.hpp b/vmodels/beta1d.hpp
new file mode 100644
index 0000000..42be3fd
--- /dev/null
+++ b/vmodels/beta1d.hpp
@@ -0,0 +1,64 @@
+#ifndef VBETA_MODEL_H_
+#define VBETA_MODEL_H_
+#define OPT_HEADER
+#include <core/fitter.hpp>
+#include <misc/optvec.hpp>
+#include <cmath>
+
+namespace opt_utilities
+{
+  template <typename T>
+  class beta1d
+    :public model<optvec<T>,optvec<T>,optvec<T>,std::string>
+  {
+    typedef optvec<T> Tv;
+  private:
+    beta1d<T>* do_clone()const
+    {
+      return new beta1d<T>(*this);
+    }
+
+    const char* do_get_type_name()const
+    {
+      return "1d surface brightness beta model";
+    }
+  public:
+    beta1d()
+    {
+      this->push_param_info(param_info<Tv>("S0",1));
+      this->push_param_info(param_info<Tv>("rc",10));
+      this->push_param_info(param_info<Tv>("beta",2./3.));
+      this->push_param_info(param_info<Tv>("bkg",0));
+    }
+
+  public:
+    Tv do_eval(const Tv& x,const Tv& param)
+    {
+      Tv result(x.size());
+      T S0=get_element(param,0);
+      T r_c=get_element(param,1);
+      T beta=get_element(param,2);
+      T bkg=get_element(param,3);
+      
+      //return x*get_element(param,0)+get_element(param,1);
+      for(size_t i=0;i!=x.size();++i)
+	{
+	  
+	  result[i]=bkg+S0*pow(1+(x[i]*x[i])/(r_c*r_c),-3*beta+static_cast<T>(.5));
+
+	}
+      return result;
+    }
+
+  private:
+    std::string do_get_information()const
+    {
+      return "";
+    }
+  };
+}
+
+
+
+#endif
+//EOF
diff --git a/vmodels/constant.hpp b/vmodels/constant.hpp
new file mode 100644
index 0000000..c4044b0
--- /dev/null
+++ b/vmodels/constant.hpp
@@ -0,0 +1,54 @@
+#ifndef VCONSTANT_MODEL_H_
+#define VCONSTANT_MODEL_H_
+#define OPT_HEADER
+#include <core/fitter.hpp>
+#include <misc/optvec.hpp>
+#include <cmath>
+
+namespace opt_utilities
+{
+  template <typename T>
+  class constant
+    :public model<optvec<T>,optvec<T>,optvec<T>,std::string>
+  {
+    typedef optvec<T> Tv;
+  private:
+    constant<T>* do_clone()const
+    {
+      return new constant<T>(*this);
+    }
+    const char* do_get_type_name()const
+    {
+      return "constant";
+    }
+  public:
+    constant()
+    {
+      this->push_param_info(param_info<Tv>("c",1));
+    }
+
+  public:
+    Tv do_eval(const Tv& x,const Tv& param)
+    {
+      //return x*param[0]+param[1];
+      Tv result(x.size());
+      for(int i=0;i<result.size();++i)
+	{
+	  result[i]=param[0];
+	}
+      return result;
+    }
+
+  private:
+    std::string do_get_information()const
+    {
+      return "Constant\n"
+	"y=C\n";
+    }
+  };
+}
+
+
+
+#endif
+//EOF
diff --git a/vmodels/poly1d.hpp b/vmodels/poly1d.hpp
new file mode 100644
index 0000000..adaf03b
--- /dev/null
+++ b/vmodels/poly1d.hpp
@@ -0,0 +1,78 @@
+#ifndef POLY_MODEL_H_
+#define POLY_MODEL_H_
+#define OPT_HEADER
+#include <core/fitter.hpp>
+#include <cmath>
+#include <sstream>
+#include <cassert>
+
+namespace opt_utilities
+{
+  template <typename T,int n>
+  class poly1d
+    :public model<optvec<T>,optvec<T>,optvec<T>,std::string>
+  {
+    typedef optvec<T> Tv;
+  private:
+    poly1d<T,n>* do_clone()const
+    {
+      return new poly1d<T,n>(*this);
+    }
+
+    const char* do_get_type_name()const
+    {
+      return "polynomial";
+    }
+  public:
+    poly1d()
+    {
+      assert(n>=0);
+      for(int i=0;i<=n;++i)
+	{
+	  std::ostringstream ostr;
+	  ostr<<"a"<<i;
+	  this->push_param_info(param_info<Tv>(ostr.str().c_str(),1));  
+	}
+      
+    }
+
+  public:
+    Tv do_eval(const Tv& x,const Tv& param)
+    {
+      //      return x*get_element(param,0)+get_element(param,1);
+      Tv result(x.size());
+      for(int m=0;m<result.size();++m)
+	{
+	  result[m]=0;
+	  for(int i=0;i<=n;++i)
+	    {
+	      typename Tv::value_type xn(1);
+	      for(int j=0;j<i;++j)
+		{
+		  xn*=x[m];
+		}
+	      result[m]+=get_element(param,i)*xn;
+	    }
+	}
+      return result;
+    }
+
+  private:
+    std::string do_get_information()const
+    {
+      std::ostringstream ostr;
+      ostr<<n<<"-order polynorminal model\n";
+      for(int i=0;i<n;++i)
+	{
+	  ostr<<"a"<<i<<"*x^"<<i<<"+";
+	}
+      ostr<<"a"<<n<<"*x^"<<n;
+      return ostr.str();
+    }
+  };
+}
+
+
+
+#endif
+//EOF