start group - channel - component - buffer association

lib/imc_block.hpp

@@ -142,6 +142,22 @@ namespace imc
       return parambuff;
     }
 
+    // get single parameter as string
+    std::string get_parameter(parameter& param)
+    {
+      // check parameter w.r.t. to block
+      if ( param.begin() < begin_ || param.end() > end_ )
+      {
+        throw std::logic_error("inconsistent parameter offsets");
+      }
+      std::string prm("");
+      for ( unsigned long int i = param.begin()+1; i <= param.end(); i++ )
+      {
+        prm.push_back( (char)((*buffer_)[i]) );
+      }
+      return prm;
+    }
+
     // get info string
     std::string get_info(bool include_object = true, int width = 20)
     {

lib/imc_key.hpp

@@ -71,7 +71,7 @@ namespace imc
     {"CT", key(true,"CT","text definition",1)},
     {"CG", key(true,"CG","group of components",1)},
     {"CD", key(true,"CD","abscissa description",1)},
-    {"CD", key(true,"CD","abscissa description",2)},
+    // {"CD2", key(true,"CD","abscissa description",2)},
     {"CZ", key(true,"CZ","scaling of z-axis",1)},
     {"CC", key(true,"CC","start of component",1)},
     {"CP", key(true,"CP","buffer, datatype and samples of component",1)},

lib/imc_raw.hpp

@@ -11,6 +11,7 @@
 #include "imc_block.hpp"
 #include "imc_datatype.hpp"
 #include "imc_object.hpp"
+#include "imc_result.hpp"
 
 //---------------------------------------------------------------------------//
 
@@ -233,9 +234,90 @@ namespace imc
     }
 
     // list all channels
-    std::vector<imc::block> list_channels()
+    std::vector<std::string> list_channels()
     {
-      return this->list_blocks(imc::keys.at("CN"));
+      std::vector<std::string> channels;
+      for ( imc::block blk: this->rawblocks_ )
+      {
+        if ( blk.get_key() == imc::keys.at("CN") )
+        {
+          imc::parameter prm = blk.get_parameters()[6];
+          channels.push_back(blk.get_parameter(prm));
+        }
+      }
+
+      return channels;
+    }
+
+    // get specific channel data
+    // TODO generalize and simplify channel extraction!!
+    imc::channel_tab get_channel(std::string channel)
+    {
+      // declare single channel table
+      imc::channel_tab chtab;
+
+      // ordinate parameters
+      std::string yunit = std::string("");
+      unsigned long int num_samples = -1;
+      // imc::datatype dtype;
+      int numbits = -1;
+      double yoffset = -1.0, yfactor = -1.0;
+
+      // abscissa parameters
+      double dx = -1.0;
+      double xoffset = -1.0;
+      std::string xunit = std::string("");
+
+      // search block for required parameters
+      for ( imc::block blk: this->rawblocks_ )
+      {
+        if ( blk.get_key() == imc::keys.at("CR") )
+        {
+          yunit = blk.get_parameter(blk.get_parameters()[7]);
+        }
+
+        if ( blk.get_key() == imc::keys.at("Cb") )
+        {
+          num_samples = std::stoul(blk.get_parameter(blk.get_parameters()[7]));
+          xoffset = std::stod(blk.get_parameter(blk.get_parameters()[11]));
+        }
+
+        if ( blk.get_key() == imc::keys.at("CP") )
+        {
+          numbits = std::stoi(blk.get_parameter(blk.get_parameters()[5]));
+        }
+
+        if ( blk.get_key() == imc::keys.at("CR") )
+        {
+          yfactor = std::stod(blk.get_parameter(blk.get_parameters()[3]));
+          yoffset = std::stod(blk.get_parameter(blk.get_parameters()[4]));
+          yunit = blk.get_parameter(blk.get_parameters()[7]);
+        }
+
+        if ( blk.get_key() == imc::keys.at("CD") )
+        {
+          std::cout<<"got CD\n";
+          dx = std::stod(blk.get_parameter(blk.get_parameters()[2]));
+          xunit = blk.get_parameter(blk.get_parameters()[7]);
+        }
+      }
+
+      std::cout<<"yunit:"<<yunit<<"\n"
+               <<"yoffset:"<<yoffset<<"\n"
+               <<"yfactor:"<<yfactor<<"\n"
+               <<"numbits:"<<numbits<<"\n"
+               <<"num_samples:"<<num_samples<<"\n"
+               <<"dx:"<<dx<<"\n"
+               <<"xoffset:"<<xoffset<<"\n"
+               <<"xunit:"<<xunit<<"\n";
+
+      // generate abscissa data
+
+
+      // generate ordinate data
+
+
+      return chtab;
     }
 
   };

lib/imc_result.hpp

@@ -0,0 +1,30 @@
+//---------------------------------------------------------------------------//
+
+#ifndef IMCRESULT
+#define IMCRESULT
+
+#include "imc_datatype.hpp"
+
+//---------------------------------------------------------------------------//
+
+namespace imc
+{
+  struct channel_tab
+  {
+    std::string name_;
+
+    // abscissa
+    std::vector<double> xaxis_;
+    std::string xunit_;
+
+    // ordinate
+    // std::vector<imc::datatype> yaxis_;
+    std::vector<double> yaxis_;
+    std::string yunit_;
+  };
+
+}
+
+#endif
+
+//---------------------------------------------------------------------------//

src/main.cpp

@@ -193,8 +193,13 @@ int main(int argc, char* argv[])
     // for ( auto blk: CSblocks ) std::cout<<blk.get_info()<<"\n";
     // std::vector<imc::block> groups = imcraw.list_groups();
     // for ( auto blk: groups ) std::cout<<blk.get_info()<<"\n";
-    // std::vector<imc::block> channels = imcraw.list_channels();
-    // for ( auto blk: channels ) std::cout<<blk.get_info()<<"\n";
+
+    // std::vector<std::string> channels = imcraw.list_channels();
+    // for ( auto chn: channels )
+    // {
+    //   std::cout<<chn<<"\n";
+    //   imc::channel_tab chtab = imcraw.get_channel(chn);
+    // }
   }
 
   return 0;