changed type auto to specific type

include/tug/Grid.hpp

@@ -20,7 +20,8 @@ class Grid {
         */
         Grid(int row, int col);
 
-        Grid(MatrixXd concentrations);
+        // TODO
+        // Grid(MatrixXd concentrations);
 
         /**
         * @brief Set the Concentrations object

include/tug/Simulation.hpp

@@ -43,7 +43,7 @@ class Simulation {
          * @brief Get the Timestep object
          * 
          */
-        auto getTimestep();
+        double getTimestep();
 
         /**
          * @brief Set the Iterations object
@@ -57,14 +57,19 @@ class Simulation {
          * 
          * @return auto 
          */
-        auto getIterations();
+        int getIterations();
-
-        void printConcentrationsConsole();
-
-        void printConcentrationsCSV(string ident);
 
         /**
-         * @brief 
+         * @brief Print the current concentrations of the grid to standard out. 
+         * 
+         */
+        void printConcentrationsConsole();
+
+
+        void printConcentrationsCSV(string ident, bool appendMode = false);
+
+        /**
+         * @brief Start the simulation with all of the previously set parameters. 
          * 
          * @return auto 
          */

src/Simulation.cpp

@@ -31,7 +31,7 @@ void Simulation::setTimestep(double timestep) {
     this->timestep = timestep;
 }
 
-auto Simulation::getTimestep() {
+double Simulation::getTimestep() {
     return this->timestep;
 }
 
@@ -39,7 +39,7 @@ void Simulation::setIterations(int iterations) {
     this->iterations = iterations;
 }
 
-auto Simulation::getIterations() {
+int Simulation::getIterations() {
     return this->iterations;
 }
 
@@ -49,12 +49,17 @@ void Simulation::printConcentrationsConsole() {
     cout << endl;
 }
 
-void Simulation::printConcentrationsCSV(string ident) {
+void Simulation::printConcentrationsCSV(string ident, bool appendMode) {
     ofstream file;
 
     string filename = "output-" + ident + ".csv";
     // string directory = "output/";
-    file.open(filename, std::ios_base::app);
+
+    if (appendMode) {
+        file.open(filename, std::ios_base::app);
+    } else {
+        file.open(filename);
+    }
     if (!file) {
         exit(1);
     }
@@ -70,7 +75,7 @@ void Simulation::run() {
         printConcentrationsConsole();
         for (int i = 0; i < iterations; i++) {
             if (csv_output == CSV_OUTPUT_VERBOSE) {
-                printConcentrationsCSV("test");
+                printConcentrationsCSV("test", true);
             }
             grid.setConcentrations(FTCS(grid, bc, timestep));
             // if (i != 0 && i % 200 == 0) {
@@ -79,7 +84,7 @@ void Simulation::run() {
         }
         printConcentrationsConsole();
         if (csv_output >= CSV_OUTPUT_ON) {
-            printConcentrationsCSV("test");
+            printConcentrationsCSV("test", true);
         }
     } else if (approach == BTCS_APPROACH) {
         for (int i = 0; i < iterations; i++) {