make tic labels optional for bar charts

pdb-plotting/src/main/java/org/lucares/recommind/logs/GnuplotSettings.java

@@ -35,6 +35,7 @@ public class GnuplotSettings {
     private AxisSettings xAxisSettings = new AxisSettings();
     private boolean renderLabels = true;
     private DateTimeRange dateTimeRange;
+    private boolean renderBarChartTickLabels;
 
     public GnuplotSettings(final Path output) {
         this.output = output;
@@ -151,6 +152,14 @@ public class GnuplotSettings {
         }
     }
 
+    public boolean isRenderBarChartTickLabels() {
+        return renderBarChartTickLabels;
+    }
+
+    public void setRenderBarChartTickLabels(final boolean renderBarChartTickLabels) {
+        this.renderBarChartTickLabels = renderBarChartTickLabels;
+    }
+
     // plot 'sample.txt' using 1:2 title 'Bytes' with linespoints 2
 
 }

pdb-plotting/src/main/java/org/lucares/recommind/logs/Plotter.java

@@ -113,6 +113,7 @@ public class Plotter {
 
                 gnuplotSettings.setAggregates(plotSettings.getAggregates());
                 gnuplotSettings.setKeyOutside(plotSettings.isKeyOutside());
+                gnuplotSettings.setRenderBarChartTickLabels(plotSettings.isRenderBarChartTickLabels());
                 gnuplot.plot(gnuplotSettings, dataSeries);
             }