ENH: DataSet has a new method for saving data to text files.

src/DataSet/DataSet.cpp

@@ -3,10 +3,11 @@
 //
 
 #include <algorithm>
+#include <filesystem>
 #include <boost/serialization/export.hpp>
 
 #include "DataSetSerialization.h"
-#include "../exceptions.h"
+#include "exceptions.h"
 
 BOOST_CLASS_EXPORT_IMPLEMENT(lib4neuro::DataSet);
 
@@ -25,7 +26,7 @@ namespace lib4neuro {
             ia >> *this;
             ifs.close();
         } else {
-            THROW_RUNTIME_ERROR("File couldn't be open!");
+            THROW_RUNTIME_ERROR("File " + file_path + " couldn't be open!");
         }
 
     }
@@ -182,12 +183,38 @@ namespace lib4neuro {
         }
     }
 
-    void DataSet::store_text(std::string &file_path) {
-        //TODO check if stream was successfully opened
+    void DataSet::store_text(std::string file_path) {
         std::ofstream ofs(file_path);
-        boost::archive::text_oarchive oa(ofs);
-        oa << *this;
-        ofs.close();
+
+        if(!ofs.is_open()) {
+            THROW_RUNTIME_ERROR("File " + file_path + " couldn't be open!");
+        } else {
+            boost::archive::text_oarchive oa(ofs);
+            oa << *this;
+            ofs.close();
+        }
+    }
+
+    void DataSet::store_data_text(std::string file_path) {
+        std::ofstream ofs(file_path);
+
+        if(!ofs.is_open()) {
+            THROW_RUNTIME_ERROR("File " + file_path + " couldn't be open!");
+        } else {
+            for (auto e : this->data) {
+                /* First part of the pair */
+                for (unsigned int i = 0; i < e.first.size() - 1; i++) {
+                    ofs << e.first.at(i) << ",";
+                }
+                ofs << e.first.back() << " ";
+
+                /* Second part of the pair */
+                for (unsigned int i = 0; i < e.second.size() - 1; i++) {
+                    ofs << e.second.at(i) << ",";
+                }
+                ofs << e.second.back() << std::endl;
+            }
+        }
     }
 
     template<class T>
@@ -316,27 +343,26 @@ namespace lib4neuro {
     std::vector<std::pair<std::vector<double>, std::vector<double>>> DataSet::get_random_data_batch(size_t max) {
         if (max <= 0) {
             return this->data;
-	} else {
-	    std::vector<std::pair<std::vector<double>, std::vector<double>>> newData;
-	    srand(time(NULL));  //TODO use Mersen twister from Boost
-
-	    size_t n_chosen = rand() % std::min(max, this->data.size())+1;
-	    std::vector<size_t> chosens;
-	    size_t chosen;
-	
+        } else {
+            std::vector<std::pair<std::vector<double>, std::vector<double>>> newData;
+            srand(time(NULL));  //TODO use Mersen twister from Boost
+
+            size_t n_chosen = rand() % std::min(max, this->data.size())+1;
+            std::vector<size_t> chosens;
+            size_t chosen;
+
             for (int i = 0; i < n_chosen; i++) {
-		chosen = rand() % this->data.size();
-		auto it = std::find(chosens.begin(), chosens.end(), chosen);
-		
+                chosen = rand() % this->data.size();
+                auto it = std::find(chosens.begin(), chosens.end(), chosen);
+
                 if (it != chosens.end()) {
-		    i--;
-		} else {
-		    newData.push_back(this->data.at(chosen));
-		}
-	    }
-
-	    return newData;
-	}	
-    }
+                    i--;
+                } else {
+                    newData.push_back(this->data.at(chosen));
+                }
+            }
 
+            return newData;
+        }
+    }
 }

src/DataSet/DataSet.h

@@ -211,8 +211,16 @@ namespace lib4neuro {
 
         /**
          * Stores the DataSet object to the binary file
+         *
+         */
+        LIB4NEURO_API void store_text(std::string file_path);
+
+        /**
+         * Stores the data to the text file in a human readable format
+         *
+         * @param file_path
          */
-        LIB4NEURO_API void store_text(std::string &file_path);
+        LIB4NEURO_API void store_data_text(std::string file_path);
 
         /**
          * Normalizes the data set