Fixed csv

- added examples.csv
- fixed csv logic for header and first line

src/main/java/net/berack/upo/valpre/Parameters.java

@@ -151,4 +151,16 @@ public class Parameters {
             throw new IllegalArgumentException("Invalid arguments");
         }
     }
+
+    /**
+     * Get the file or the example file if it is present.
+     * 
+     * @param file the file to get
+     * @return the file or the example file
+     */
+    public static String getFileOrExample(String file) {
+        if (file.startsWith("example"))
+            file = Main.class.getClassLoader().getResource(file).getPath();
+        return file;
+    }
 }

src/main/java/net/berack/upo/valpre/Plot.java

@@ -22,11 +22,11 @@ public class Plot {
      */
     public Plot(String[] args) throws IOException {
         var arguments = Plot.parseParameters(args);
-        var csv = arguments.get("csv");
-        if (csv == null)
+        var file = Parameters.getFileOrExample(arguments.get("csv"));
+        if (file == null)
             throw new IllegalArgumentException("CSV file needed! Use -csv <file>");
 
-        var results = new CsvResult(csv).loadResults();
+        var results = new CsvResult(file).loadResults();
         this.results = new ResultMultiple(results);
     }
 

src/main/java/net/berack/upo/valpre/Simulation.java

@@ -36,12 +36,9 @@ public class Simulation {
         this.csv = arguments.getOrDefault("csv", null);
         this.parallel = arguments.containsKey("p");
 
-        var file = arguments.get("net");
-        if (file == null)
+        this.file = Parameters.getFileOrExample(arguments.get("net"));
+        if (this.file == null)
             throw new IllegalArgumentException("Net file needed! Use -net <file>");
-        if (file.startsWith("example"))
-            file = Main.class.getClassLoader().getResource(file).getPath();
-        this.file = file;
     }
 
     /**

src/main/java/net/berack/upo/valpre/sim/stats/CsvResult.java

@@ -36,7 +36,9 @@ public class CsvResult {
      */
     public void saveResults(Result[] results) throws IOException {
         var builder = new StringBuilder();
+        builder.append("seed,node,");
         builder.append(String.join(",", Statistics.getOrderOfApply()));
+        builder.append('\n');
 
         try (var writer = new FileWriter(this.file)) {
             for (var result : results) {
@@ -97,6 +99,8 @@ public class CsvResult {
             builder.append(val).append(",");
             return val;
         });
+
+        builder.deleteCharAt(builder.length() - 1); // remove the last comma
         return builder.toString();
     }